Title of Invention

MOBILE RADIO ANTENNA WITH BEAM-FORMING ELEMENT

Abstract An improved antenna arrangement is disclosed. The antenna arrangement is characterized by the following features: the passive and electrically conducting element comprises a beam forming element (25), at least one provided beam forming element (25) is divided into two sections, namely a support section (25a) and a working section (25b), connected to the region of the support section (25a) lying furthest from the reflector (1).
Full Text DESCRIPTION
Field of the Invention
The present invention relates to an antenna, in particular to a stationary mobile
radio antenna.
Background of the Invention
Antennas in particular in the form of stationary mobile radio antennas have
been known for a long time.
By way of example, EP 1 082 781 B1 discloses an antenna array having two or
more primary antenna element modules which are arranged vertically one
above the other and transmit and receive in one position, for example with a
vertical alignment. Each individual antenna element may in this case comprise
dipole antenna elements or dipole antenna element arrangements.
In addition, antennas, in particular in the form of antenna arrays, are also
known which transmit and/or receive on two mutually orthogonal polarization
planes. Dual-polarized antennas such as diese are known, for example, from
DE 198 60 121 A1. In this case, the two mutually perpendicular polarization
planes are preferably rotated at an angle of 45° with respect to the horizontal
(or vertical). The expression so-called X polarization or X alignment of the
antenna elements is also frequency used in this case.
These antennas or antenna arrays likewise once again preferably use dipole
antenna elements, for example cruciform dipole antenna elements or else
dipole squares. In addition, so-called vector dipoles may also be used, such as
those which are known, in principle, from DE 198 60 121 Al. These dipole


structures represent a dual-polarized antenna element arrangement which, from
the electrical point of view, is constructed in the form of a cruciform dipole
and, from the physical point of view, is approximately in the form of a square
structure.
Object of the Invention
Against the background of these fundamentally known antenna elements and
antenna element arrangements, the object of the present invention is to provide
an improved antenna, in particular in the form of a stationary antenna for a
base station for the mobile radio range, which is equipped with a device for
carrying out beamforming. One particular aim of the invention is to allow
better shaping of far-field polar diagrams to be produced for antennas such as
these.
Summary of the Invention
According to the invention, the object is achieved on the basis of the features
specified in claim 1. Advantageous refinements of the invention are specified
in the dependent claims.
Within the scope of the present invention, it is now possible to specifically
improve the shaping of the far-field polar diagrams of corresponding antennas
by measures that are additionally provided according to the invention.
In this case, according to the invention, the shaping of the far-field polar
diagram may be carried out just for a single antenna element, in particular even
if there is only one antenna element emitting one polarization. In the same way,
however, the invention can also be used for a dual-polarized antenna element
or for a dual-polarized antenna element arrangement. The invention is in this

case not just restricted to a single-band antenna but can also be used and
provided for a dual-band antenna or, in general form, for a multiband antenna.
In this case, the present invention is also distinguished in that the desired
improvement that has been explained can be achieved by comparatively simple
and low-cost measures. Furthermore, the measure that produce the
improvement can be used specifically and, in particular, can be associated with
individual antenna elements.
In this case, the measures according to the invention can be used not just for
dual-polarized antennas with dipole antenna elements, but, for example, also
for patch antennas. In principle, there are no restrictions on the specific antenna
element forms.
The solution according to the invention is distinguished, inter alia, by the
provision of a passive electrically conductive element, which is conductively
connected or capacitively coupled at least indirectly to the electrically
conductive reflector.
The passive electrically conductive element according to the invention, which
is additionally provided at least for one antenna element or one antenna
element arrangement, is preferably subdivided into at least two parts and
comprises a mounting section, which preferably originates from the reflector
and is electrically connected or capacitively coupled to it, and in this case is
preferably at least indirectly mechanically connected to the reflector. A so-
called operating section, which is preferably arranged on a plane running
parallel to the reflector, is then provided on the side of the mounting section
facing away from the foot point of the mounting section (which is located in
the vicinity of the reflector or of the reflector plane). This operating section
may, moreover, be arranged such that it differs from the alignment of the

reflector plane at least in an angular range of ± 20°, and preferably less than
±10°, that is to say running at an angle to the reflector plane.
The invention in this case provides for this operating section to have a length of
preferably 0.2 λ up to and including 1.0λ, where λ corresponds to the
wavelength in the frequency range or frequency band to be transmitted,
preferably the mid-wavelength of the frequency range to be transmitted. The
operating plane itself may be arranged above or below the antenna element
plane of the active antenna element to be influenced by it. There is no
restriction to this. However, the length of the mounting section, which is
greater than the distance between the operating section of the passive
electrically conductive element on the reflector, should not exceed a maximum
value corresponding to twice the wavelength mentioned above.
The material thickness and the transverse dimensions transversely with respect
to the extent direction of the electrically conductive additionally provided
beamformer element should preferably be less than 0.1 times the operating
wavelength, preferably the mid-operating wavelength of the element to be
influenced.
In principle, mobile radio antennas which comprise decoupling elements that
are in the form of rods and extend essentially at right angles to the reflector
plane are known from the prior art, for example also from WO 01/04991 Al.
These passive, electrically conductive coupling elements are conductively
connected to the reflector plate, or are capacitively coupled at their foot point
to the conductive reflector. However, these elements are electrically conductive
passive decoupling devices, in order to achieve better decoupling between two
dual-polarized antenna elements or antenna element devices.
However, the aim of the present invention is not to ensure a decoupling


element for improvement of the decoupling between two dual-polarized
emission planes but, instead, the aim of the present invention is to change and
to shape the polar diagram in a desired manner, for example even in the case of
an antenna element device which emits only a single polarization plane,
particularly when viewed in the far field. The invention therefore also provides
for the operating section of the electrically conductive beamforming element
according to the invention to run such that it is aligned at least essentially or
approximately on the operating plane mentioned above, which is preferably
parallel to the reflector plane, in the polarization direction of the element to be
influenced. In this case as well, discrepancies of preferably less than 20% and
in particular of less than 10%, can also still bring about the desired success
according to the invention.
Brief Description of the Accompanying Drawings
The invention will be explained in more detail in the following text with
reference to exemplary embodiments. In this case, in detail:
Figure 1: shows a schematic, perspective illustration of an antenna
arrangement having a dipole antenna element and an
element or beamforming element according to the
invention;
Figure 2: shows a schematic front view along the arrow A illustrated in
Figure 1;
Figure 3: shows an exemplary embodiment, modified from that in
Figures 1 and 2, of a dual-polarized antenna element with
a corresponding arrangement according to the invention of
two elements according to the invention for polar diagram

shaping for each polarization;
Figure 4: shows an illustration corresponding to that in Figure 3 with a
differently configured dual-polarized antenna element
arrangement;
Figure 5: shows a corresponding perspective illustration of a dual-
polarized two-band antenna arrangement with the
beamforming device shown in Figure 4;
Figure 6: shows a schematic plan view of the exemplary embodiment
shown in Figure 5; and
Figure 7: shows a cross-sectional illustration transversely with respect to
the vertical alignment of the reflector shown in Figure 5,
through me central antenna element and the beamforming
element according to the invention.
Detailed Description of the Invention
A first exemplary embodiment of an antenna according to the invention will be
explained in more detail in the following text with reference to Figures 1 and 2.
The antenna shown in Figures 1 and 2 has a reflector arrangement or a reflector
1 which is conductive.
An antenna element arrangement 5 which, in the illustrated exemplary
embodiment, comprises a single antenna element 5a is preferably provided in
the central area between the two longitudinal side areas 3. The single antenna

element 5a in this exemplary embodiment is formed from a dual-polarized
dipole antenna element which emits two mutually perpendicular planes (that is
to say it transmits or receives two mutually perpendicular planes).
The reflector 1 is essentially planar, at least in the area of the antenna element
arrangement 5. In the illustrated exemplary embodiment, projecting reflector
webs or wall sections 1' are provided running in the emission direction on the
longitudinal side areas 3 transversely with respect to the reflector plane. These
need not necessarily be arranged at the outer lateral end of the reflector 1, but
can also be provided further inwards. In addition, additional webs or outer side
boundary sections may be provided, such as those which are known, for
example, from the prior publications WO 99/62138 A1, US 5 710 569 A, or
EP 0916 169 B1. The webs 1' which have been mentioned may in this case be
aligned at right angles to the reflector plane, or else at some other, obliquely
running angle.
The explained antenna arrangement is generally installed such that the reflector
1 runs lying on a vertical plane and, in the process, the webs 1' which have
been mentioned and are arranged in the side area likewise run in the vertical
direction. In contrast to the illustrated exemplary embodiment, the linear-
polarized antenna element or the linear-polarized antenna element arrangement
may also be aligned differently, for example such that the polarization plane
does not lie on a horizontal plane, but on some other plane in contrast to this,
for example in the vertical direction. In this case, the antenna element
arrangement would then be aligned with the beamforming element (which will
be explained later) rotated through 90°, so that the dipole antenna element then
runs parallel to the webs 1' which are provided at the sides.
The antenna element 5 is constructed essentially in a known manner and has
two dipole halves 15, which are held via a dipole mounting device in the form

of a balancing device 17. In the illustrated exemplary embodiment, the antenna
element arrangement is arranged in an array 19 on the reflector 1 which, in a
plan view, is at least approximately square and has a circumferential web or a
circumferential wall 21.
A passive electrically conductive element 25, which is sometimes also referred
to in the following text as a beamforming element 25, is now provided, in
particular for shaping of the polar diagram, especially with regard to the far
field, but also in order to improve the matching of the active element, that is to
say of the antenna element. This beamforming element 25 is subdivided at least
approximately into two sections in the illustrated exemplary embodiment,
specifically a mounting section 25a and a so-called operating section 25b. It
can also be seen that the mounting section 25a which, like the operating section
25b, is electrically conductive or is provided with an electrically conductive
surface or partially with an electrically conductive surface, likewise contributes
to the overall effect but that is to say the effect is not provided solely by the so-
called operating section 25b.
The mounting section 25a is preferably arranged directly electrically
conductively on the reflector 1, and is electrically and preferably mechanically
connected to it. However, the link may also be provided capacitively, so that
the mounting section 25a and, in particular its foot point 25c, are capacitively
coupled to the reflector 1. The mechanically and/or electrically conductive or
electrically capacitive connection or coupling to the reflector 1 may, however,
also be provided indirectly, by providing a corresponding link via an additional
intermediate element or to the foot point of the balancing device 17. In the
illustrated exemplary embodiment, a conductive ring structure 29 is provided
circumferentially on the reflector 1 and at the foot point of the balancing device
17, to which conductive ring structure 29 the foot section of the mounting
section 25a is mechanically and electrically linked (or, in the case of capacitive

coupling, is in this case capacitively coupled with the interposition of an
insulator or dielectric).
As can be seen in particular from the side view in Figure 2, a so-called
transition area or transition point 25d is adjacent to the upper end of the
mounting section 25a of the so-called operating section 25b, which preferably
lies on an operating plane WE. This operating plane WE is preferably aligned
parallel to the plane of the reflector 1, that is to say are arranged at least
parallel to that reflector section in the area of the antenna elements or of the
beamforming element. The operating section 25b or its essential or major part
need not, however, necessarily be aligned exactly parallel to the relevant
reflector section or reflector 1. Discrepancies with regard to the relevant
section of the reflector of preferably less than ± 20°, in particular of less than
± 10°, still lead to the desired effects.
Owing to the configuration and arrangement of the mounting section, the
length of the mounting section from the foot point 25c located at the bottom up
to the level of the operating plane, that is to say in particular to the transition
area 25d, is longer than the distance between the reflector plane RE and the
operating plane WE. The mounting section 25a should in this case be larger
than the distance between the operating plane WE and the reflector plane RE at
least in the area of the antenna element arrangement or in the area of the
beamforming element 25 to be influenced via it. The length of the mount
should, however, preferably not exceed twice the wavelength (2 X) of the
associated operating mid-wavelength of the antenna element arrangement 5,
with this wavelength corresponding to the lower or upper end of the frequency
band to be considered, preferably the wavelength in the mid-frequency band.
The length of the operating section 25b in the direction of the operating plane
WE should preferably correspond to 0.2 X, up to and including
respect to the operating wavelength (in particular the mid-operating
wavelength of a frequency band to be transmitted).
The operating plane itself may be located not only underneath but also above
or at the same level as the active antenna element, that is to say the dipole
halves 15. In this case, the operating plane (in particular in the area of the
operating section 25b) should be located at a distance of preferably 0.2 λ up to
and including 1.5 λ, where λ once again corresponds to the wavelength of the
frequency band to be transmitted, preferably the mid-wavelength of the
frequency band to be transmitted.
The exemplary embodiment shown in Figures 1 and 2 also shows that the
operating section 25b is arranged to be copolar, that is to say it is aligned in the
direction of the polarization plane. In this case, the operating section 25b is not
only located parallel, but also on the polarization plane PE of the antenna
element arrangement 5 to be influenced via it. In the exemplary embodiment
shown in Figures 1 and 2, the polarization plane PE thus remains at right
angles to the reflector 1, with the dipole halves 15 being located on this
polarization plane PE and in this case, in the preferred embodiment, the
mounting section 25a as well as the operating section 25b of the beamforrning
elements 25, being located there as well.
The illustrated exemplary embodiment also shows that two such beamforrning
elements 25 according to the invention are provided for the single dipolar
antenna element that is provided, which beamforming elements 25 are arranged
symmetrically to a plane of symmetry at right angles to the reflector 1, as well
as at right angles to the polarization plane PE and runs through the center of the
antenna element arrangement 5.
The following text refers to a modified exemplary embodiment, as shown in

Figure 3.
This exemplary embodiment likewise once again relates to an antenna element
arrangement 5 which, in this exemplary embodiment, comprises two individual
dipole antenna elements 5a and 5b, however, which are designed in the form of
a dipole cruciform. The two dipole antenna elements which are aligned at right
angles to one another are in this case preferably arranged rotated through an
angle of +45° with respect to the horizontal or vertical plane, so that this
antenna element arrangement has two polarization planes PE, which are at right
angles to one another, at + 45° and - 45°.
In this arrangement, two beamforming elements 25 according to the invention
are in each case provided for each dipole half, that is to say for each
polarization plane.
The associated mounting sections 25 a are in this case preferably each once
again located on one of the relevant polarization planes of the associated dipole
arrangement. The operating section 25b, which is adjacent to the upper end of
the respective mounting section 25a, is in this case in each case aligned at right
angles in each case to the polarization plane in which the associated mounting
section 25a is arranged running, that is to say they are aligned running parallel
to the polarization plane of the respective other mounting section 25a. The
length and size ratios are comparable to the exemplary embodiment shown in
Figures 1 and 2. Thus, in this arrangement, the two side mounting sections 25a
diverge from one another in the direction of the operating plane WE, starting
from the reflector plane, with the operating sections 25b which are adjacent to
the upper end of the mounting section 25a running toward one another on a
common operating plane WE and, in the illustrated exemplary embodiment,
ending at a short distance A from one another.

In contrast to the illustrated exemplary embodiment, however, not only
Figures 1 and 2 but also Figure 3 show the arrangement in such a way that the
mounting section 25a does not necessarily lie on the respectively associated
polarization plane PE, but also runs out of this plane between its foot point and
its transition area to the associated operating section 25b, or, overall is arranged
at an oblique angle to the polarization plane. Discrepancies of less than ± 20°,
in particular of less than ±10°, are possible in this case. The more critical
factor is, in particular, that the operating sections 25b each run parallel to an
associated polarization plane PE (being located at a lateral distance from the
polarization plane of the associated antenna element), with discrepancies of
less than ± 20°, in particular of less than ±10°, with respect to the polarization
plane also being possible here. Discrepancies between the operating plane WE
and the alignment of the operating sections 25b with respect to the reflector
plane can also move in the same range, that is to say this discrepancy can also
be less than ± 20°, and in particular ± 10°.
Once again, Figure 4 shows another different exemplary embodiment, which
differs from that shown in Figure 3 in that a square compact antenna element is
used as an antenna element arrangement 5 polarized in a cruciform shape. This
is an antenna element arrangement as is known in principle from
DE 198 60 121 A1. The outer corner points of the conductive structure may in
this case be open (as has been described in DE 198 60 121 A1), or may be
closed by means of an insulator or dielectric, or else electrically conductively.
In this context, reference should be made to known solutions. Furthermore, in
this case, the polarization planes are aligned at an angle of + 45° and - 45° with
respect to the horizontal or vertical. The dipole antenna element structure,
which is cruciform from the electrical point of view, in Figure 4 is an antenna
element arrangement which in some cases is also referred to as a vector
antenna element, cross-vector antenna element, or antenna element
arrangement.

Figures 5 to 7 serve only to show that, for example, a dual-band antenna array,
in particular for a stationary mobile radio antenna, may have a conventional
antenna element arrangement with antenna elements 115 for a relatively high
frequency band, and antenna element arrangements 215 for transmission in a
relatively low frequency band. The antenna element arrangement 215 for
transmission in the relatively low frequency band in each case comprises two
pairs of dipoles 215' and 215", which are arranged parallel to one another and
are arranged so as to produce a dipole square. In this case, the antenna elements
which are provided for transmission in the relatively high frequency band are
arranged centrally in these dipole squares, with their dipole antenna elements
lying on a plane which is closer to the reflector plane RE than the dipole
elements 215' and 215" of the antenna elements which emit in the higher
frequency band. The antenna element arrangement 215 is intended for
transmission and/or reception in the relatively low frequency band (this may
preferably be a frequency band operating, for example, at half the frequency of
the frequency in the relatively high frequency band. However, there is no
absolute necessity for any such restriction). Both the inner antenna elements
215 and the outer antenna elements 115 are arranged and aligned such that both
antenna element types emit on two mutually perpendicular polarization planes
which, in the illustrated exemplary embodiment, are aligned at an angle of
+ 45° and - 45°, respectively, to the horizontal or vertical plane.
An additional antenna element arrangement 115 is then also arranged between
the centers of the two antenna element arrangements 115 on the reflector 1, for
transmission in the relatively high frequency band (in particular for
transmission in a frequency band that is twice as high as the low frequency
band, the antenna element sequence and thus the antenna element separation
between the antenna elements for the relatively high frequency band is thus
only half as great as for the relatively low frequency band). If those


beamforming elements 25 which have already been described for the
exemplary embodiment shown in Figure 4 and in this case also used for the
central antenna element arrangement 115, that is to say for the antenna element
arrangement 115 which is in each case located between two antenna element
arrangements 215 that are provided for the relatively low frequency range, then
this results in a structure corresponding to the example shown in Figure 5.
The corresponding plan view illustrated in Figure 6 shows that the
beamfoiming elements 25 together with the respective mounting section 25 a
and the operating section 25b adjacent to it, are in this exemplary embodiment
shaped such that the respective mounting section 25a corresponds to that part
of the mount or of the balancing device 17 with a corresponding dipole
arrangement for the antenna element arrangement 115 which emits in the
relatively low frequency band, and the operating section 25b (which is then
adjacent to the mounting section 25a) of a respectively associated dipole half
15' of an adjacent antenna element arrangement 215, that is to say can be
aligned running parallel thereto. Thus, in this case, the mounting section 25'a
essentially has the same length, the same alignment and gradient parallel to the
one part of the mounting section or of the balancing device 17', and the further
mounting section 25"a is arranged and positioned in a corresponding
alignment, with a.90° offset in a plan view, otherwise with the same gradient
and a similar or comparable length to the associated part of the mounting
section or of the balancing device 17" for the antenna elements 215, that is to
say also at the same distance from the vertical side edge 1' of the reflector 1'
and at the same lateral distance from a central vertical plane etc., running at
right angles to the reflector plane. Thus, in this exemplary embodiment, the
operating sections 25b are arranged in an operating plane WE parallel to the
reflector, on which the dipole elements 15' of the dipole antenna elements 215
which are intended for the relatively low frequency band also come to rest. In
addition, the length of the operating sections 25b corresponds approximately to


the length of the respective dipole half for the relatively low frequency band, or
differs by less than 40%, in particular by less than 30%, less than 20% or even
less than 10%, from it. Finally, the arrangement of the operating sections with
respect to the reflector is also comparable to the arrangement of the dipole
halves of the adjacent antenna elements for transmission in the low frequency
band. In other words, the operating sections are arranged above the reflector,
such that, for example, the dipole half 215" starts and ends approximately at
the same distance from the adjacent side boundary at 1' of the reflector at
which the correspondingly parallel dipole half 215" of the antenna element for
the relatively high frequency band likewise starts and ends. In a corresponding
manner, the second operating section 25b' which is in each case at right angles
to this, is arranged in the correspondingly same relative position with respect to
the transverse direction of the reflector, as the parallel dipole half 215' of an
adjacent antenna element for the relatively low frequency band.
This allows particularly good results to be achieved since this allows not only
shaping of the far-field polar diagram for not just one but also for two or more
polarizations, and the use of the corresponding beamforrning elements 25
furthermore makes it possible to achieve an improvement in the isolation
between the polarizations, and hence an improvement in the matching of the
respective active element for the relatively high frequencies.


WE CLAIM :
1. Antenna having the following features:
having a reflector (1),
having an antenna element arrangement which has at least one
antenna element (115, 215) for operation in two polarization planes (PE),
having at least four passive, electrically conductive elements, which
are at least indirectly electrically conductively connected or electrically
capacitively coupled to the reflector (1),
characterized by the following features:
the passive and electrically conductive elements comprise
beamforming elements (25),
the at least four beamforming elements (25) that are provided are
subdivided into at least two sections, specifically a mounting section (25a) and
an operating section (25b), which is connected to the area of the mounting
section (25a) located further away from the reflector (1),
the operating section (25b) lies on an operating plane (WE), which
runs parallel to the reflector (1), or differs from being parallel to it by less than
± 20°, at least in the area of the beamforming element (25) and/or of the
antenna element (15, 115, 215) to be influenced via it,
the length of the operating section (25b) is between 0.2λ and 1.0λ,
the operating section (25b) or the operating plane (WE) is at a
distance from the reflector (1) in the area of the operating section (25b), which
distance is greater than or equal to 0.2 λ and is less than or equal to 1.5 λ,
the length of the mounting section (25a) is shorter than twice the
wavelength 2 λ, where (λ) is a wavelength of the frequency band to be
transmitted,
the operating section (25b) is aligned parallel to (or differs by less
than ± 20° from being parallel to) the associated polarization plane (PE) of the
antenna element (115, 215) to be influenced via it,


the length of the mounting section (25a) is greater than the distance
between the operating section (25b) and the reflector (1), and
the at least four mounting sections (25a) which are provided are
arranged with the associated operating sections (25b) such that in each case
two mounting sections (25a) run away from one another in the direction of the
operating plane (WE), starting from the plane of the reflector (1), and the
operating sections (25b) which are adjacent to the upper end of the mounting
sections (25a) run toward one another again, on a common operating plane
(WE).
2. Antenna as claimed in claim 1, wherein the material thickness or the
cross-sectional size of the mounting section (25a) and/or of the operating
section (25b) is less than 0.1 λ, where lambda is the wavelength of the
frequency band to be transmitted.
3. Antenna as claimed in claim 1 or 2, wherein the mounting section (25a)
lies at least essentially on the polarization plane (PE) of the antenna element
arrangement.
4. Antenna as claimed in one of claims 1 to 3, wherein the footprint (25c)
of the mounting section (25a) as well as its transition area or transition point
(25d) which is located at a distance from the reflector (1) and at which the
operating section (25b) starts, is located at least approximately on the same
polarization plane (PE) as the antenna element (15, 115, 215).
5. Antenna as claimed in one of claims 1 to 4, wherein at least two
beamforming elements (25) are provided for each polarization.
6. Antenna as claimed in one of claims 1 to 5, wherein at least one
operating section (25b) runs parallel to one of the two mutually perpendicular


polarization planes (PE) and at least one further operating section (25b) runs
parallel to the other polarization plane (PE).
7. Antenna as claimed in one of claims 1 to 6, wherein the mounting
section (25a) which is associated with a beamforming element (25) is parallel
to one of the two mutually perpendicular polarization planes (PE), and wherein
the operating section (25b) which is held via this mounting section (25a) runs
parallel to the other polarization plane (PE), which is at right angles thereto.
8. Antenna as claimed in one of claims 1 to 7, wherein the operating
section (25b) is aligned at right angles, or at least approximately at right angles,
to the mounting section (25a) on which it is mounted.
9. Antenna as claimed in one of claims 1 to 8, wherein, in a plan view of a
dual-band or multi-band antenna, at least parts of the operating sections (25b)
are arranged such that they are located at least approximately at the same
lateral distance from the side boundary (1') of the reflector (1) as the associated
parallel dipole halves (215', 215") of adjacent antenna elements (215) for
transmission in a lower frequency band.
10. Antenna as claimed in one of claims 1 to 9, wherein the operating
sections (25b, 25b', 25b") are arranged parallel to the dipole halves (215', 215")
of adjacent antenna elements (215) which are provided for transmission in a
lower frequency band.
11. Antenna as claimed in one of claims 9 or 10, wherein the operating
sections (25b) lie on an operating plane (WE) which corresponds to the antenna
element plane of the antenna elements (215) which emit in a lower frequency
band.


12. Antenna as claimed in one of claims 1 to 11, wherein the operating
section (25b) is aligned such that it is copolar to the respective antenna element
(215) to be influenced.
13. Antenna as claimed in one of claims 1 to 12, wherein the antenna is a
stationary mobile radio antenna.
14. Antenna as claimed in one of claims 1 to 13, wherein the mounting
sections (25'a, 25"a) and/or the operating sections (25b, 25b', 25b") are
arranged at the same distance from a vertical plane which runs centrally with
respect to the reflector (1), and at right angles to the reflector plane.


ABSTRACT

MOBILE RADIO ANTENNA WITH BEAM-FORMING ELEMENT
An improved antenna arrangement is disclosed. The antenna
arrangement is characterized by the following features: the passive and
electrically conducting element comprises a beam forming element (25), at
least one provided beam forming element (25) is divided into two sections,
namely a support section (25a) and a working section (25b), connected to the
region of the support section (25a) lying furthest from the reflector (1).

Documents:

02821-kolnp-2006-abstract.pdf

02821-kolnp-2006-assignment-1.1.pdf

02821-kolnp-2006-assignment.pdf

02821-kolnp-2006-claims.pdf

02821-kolnp-2006-correspondence others-1.1.pdf

02821-kolnp-2006-correspondence others.pdf

02821-kolnp-2006-description(complete).pdf

02821-kolnp-2006-drawings.pdf

02821-kolnp-2006-form-1.pdf

02821-kolnp-2006-form-3-1.1.pdf

02821-kolnp-2006-form-3.pdf

02821-kolnp-2006-form-5.pdf

02821-kolnp-2006-international publication.pdf

02821-kolnp-2006-international search authority report.pdf

02821-kolnp-2006-pct other document.pdf

02821-kolnp-2006-priority document.pdf

2821-KOLNP-2006-(05-09-2011)-ABSTRACT.pdf

2821-KOLNP-2006-(05-09-2011)-AMANDED CLAIMS.pdf

2821-KOLNP-2006-(05-09-2011)-DESCRIPTION (COMPLETE).pdf

2821-KOLNP-2006-(05-09-2011)-DRAWINGS.pdf

2821-KOLNP-2006-(05-09-2011)-EXAMINATION REPORT REPLY RECIEVED.PDF

2821-KOLNP-2006-(05-09-2011)-FORM 1.pdf

2821-KOLNP-2006-(05-09-2011)-FORM 2.pdf

2821-KOLNP-2006-(05-09-2011)-FORM 3.pdf

2821-KOLNP-2006-(05-09-2011)-OTHERS.pdf

2821-KOLNP-2006-(06-01-2012)-CORRESPONDENCE.pdf

2821-KOLNP-2006-ASSIGNMENT .pdf

2821-KOLNP-2006-CORRESPONDENCE 1.1.pdf

2821-KOLNP-2006-CORRESPONDENCE 1.2.pdf

2821-KOLNP-2006-EXAMINATION REPORT.pdf

2821-kolnp-2006-form 18.pdf

2821-KOLNP-2006-FORM 3.pdf

2821-KOLNP-2006-FORM 5.pdf

2821-KOLNP-2006-GPA.pdf

2821-KOLNP-2006-GRANTED-ABSTRACT.pdf

2821-KOLNP-2006-GRANTED-CLAIMS.pdf

2821-KOLNP-2006-GRANTED-DESCRIPTION (COMPLETE).pdf

2821-KOLNP-2006-GRANTED-DRAWINGS.pdf

2821-KOLNP-2006-GRANTED-FORM 1.pdf

2821-KOLNP-2006-GRANTED-FORM 2.pdf

2821-KOLNP-2006-GRANTED-SPECIFICATION.pdf

2821-KOLNP-2006-OTHERS.pdf

2821-KOLNP-2006-REPLY TO EXAMINATION REPORT.pdf

abstract-02821-kolnp-2006.jpg


Patent Number 253728
Indian Patent Application Number 2821/KOLNP/2006
PG Journal Number 34/2012
Publication Date 24-Aug-2012
Grant Date 17-Aug-2012
Date of Filing 27-Sep-2006
Name of Patentee KATHREIN-WERKE KG
Applicant Address ANTON-KATHREIN-STR,1-3 83022 ROSENHEIM
Inventors:
# Inventor's Name Inventor's Address
1 GOTTL, MAXIMILIAN ADOLF-VEIT-WEG 4, 83112,FRASDORF
2 KINKER, ROBERT LEITZACHSTRASSE 28, 83026 ROSENHEIM
PCT International Classification Number H01Q1/24; H01Q3/26
PCT International Application Number PCT/EP2005/005456
PCT International Filing date 2005-05-19
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102004025904.6 2004-05-27 Germany