WO2005029641A1 - An apparatus for controlling spacing of each element in an antenna array - Google Patents
An apparatus for controlling spacing of each element in an antenna array Download PDFInfo
- Publication number
- WO2005029641A1 WO2005029641A1 PCT/IB2004/051672 IB2004051672W WO2005029641A1 WO 2005029641 A1 WO2005029641 A1 WO 2005029641A1 IB 2004051672 W IB2004051672 W IB 2004051672W WO 2005029641 A1 WO2005029641 A1 WO 2005029641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- connecting unit
- antenna element
- radio signals
- wireless communication
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
- H01Q3/06—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle
Definitions
- the present invention relates generally to a mobile terminal in wireless communication
- Antenna array technology can effectively reduce multipath interference and signal fading
- Antenna array technology such as diversity antenna, smart antenna, MIMO
- antenna array has developed into one of the core
- the spacing of each element is a
- Radio signals will produce
- antenna array is adopted to receive
- MIMO antenna system has multiple antennas at both the transmitter and receiver, and can
- each element may have different phase
- Signals received by each antenna element are RF
- desired signals are enhanced through in-phase superimposition while interfering signals are
- An object of the present invention is to overcome the problem that element spacing in
- Another object of the present invention is to provide a simple and feasible method for
- wireless communication equipments in accordance with the present invention comprises: a
- antenna element's position is adjustable; at least one connecting unit, which connects with the
- FIG.1 A is a schematic diagram illustrating a mobile terminal with two antennas structure in
- Fig. IB is block diagram illustrating how the stretchable stub is connected with the
- Fig.2 is a schematic diagram illustrating the mobile terminal with two antennas structure in
- Fig.3 is a schematic diagram illustrating the mobile terminal with two antennas structure in
- bi-antenna structure is exemplified to describe the apparatus for
- component for moving elements in the antenna array can adopt a stretchable stub or
- mobile terminal 1 includes two antenna elements 2 and 3, wherein the
- element 2 is fixed while element 3 can be moved from position M to the position N out of mobile terminal 1 through stretchable stub 4.
- stretchable stub 4 containing a coaxial line or other
- radio signals received by element 3 can be transferred to the receiving unit within the
- the mobile terminal to be transmitted can also be transmitted from antenna array 3 through feeder
- Fig. IB is block diagram illustrating how element 3 is connected
- transceiver 10 in mobile terminal 1 through stretchable stub 4 and feeder 5 in mobile
- Fig.2 is a schematic diagram illustrating how an antenna element is moved through a
- element 3 can be moved
- rotatable stub 6 As to rotatable stub 6 containing a coaxial line or other similar equipments
- Signals from the transmitting unit of the mobile terminal to be transmitted can also be transmitted from antenna array 3 through feeder 5 and the
- the rotating angle of rotatable stub 6 can be
- this structure is the varying range of spacing can be enlarged greatly without changing the stub
- Fig.3 is a schematic diagram illustrating two rotatable elements in a bi-antenna mobile
- the rotatable antenna element adopts the same architecture as that in
- element 2 can randomly rotates from
- element 3 can randomly rotates from position 2b to
- Radio signals from elements 2 and 3 can be transferred to the receiving unit in
- transmitting unit of the mobile terminal to be transmitted are transmitted from elements 2 and 3,
- spacing and the relative direction of two antenna elements 2 and 3 can be much more flexible
- the antenna element can be moved out of
- the antenna element out of the mobile terminal can be rotated
- controllable range and precision of element spacing is enhanced.
- antenna array can have higher flexibility and element spacing can have greater controllable
- the apparatus for controlling spacing of each element in the antenna As described above, the apparatus for controlling spacing of each element in the antenna
- array as provided in the present invention can adjusts element spacing flexibly and conveniently.
- the present invention can satisfy requirements of different antenna systems, such as
- terminals in mobile communication systems wireless terminals in WLAN and mobile radio
- connection components connecting antenna elements and feeders can adopt stretchable stub and rotatable stub, or be replaced by other similar mechanical components.
- each element in the antenna array as disclosed in this invention can be modified considerably
Abstract
An apparatus for controlling spacing of each element for an antenna array in a wireless communication equipment, comprising: a plurality of antenna elements, for receiving and transmitting radio signals, wherein at least one antenna element's position is adjustable; at least one connecting unit, connected with the position-adjustable antenna element, for changing said antenna element's position and transferring the radio signals received by said antenna element, and transferring the radio signals to be transmitted by said wireless communication equipment to said antenna element; and at least one feeding component, connected with said connecting unit, for outputting the radio signals transferred through said connecting unit, and transferring the radio signals to be transmitted to said connecting unit.
Description
PGT/IB2004/051672 1
An Apparatus for Controlling Spacing of each Element in an Antenna Array
Field of the Invention
The present invention relates generally to a mobile terminal in wireless communication
systems, and more particularly, to an apparatus for controlling spacing o f each element in the
antenna array of a mobile terminal.
Background of the Invention
With rapid development of mobile communication, the number of subscribers is soaring
and spectrum resource is going to be more and more stringent, thus how to enlarge capacity by
using current spectrum resource has emerged to be a key issue for mobile communication. Antenna array technology can effectively reduce multipath interference and signal fading,
improve system capacity and spectrum efficiency, so it has been paid more and more attention
from the industry. Antenna array technology, such as diversity antenna, smart antenna, MIMO
and etc, will get more applications in mobile terminals, especially in 3G and post-3G wireless
communication systems. Obviously, antenna array has developed into one of the core
technologies in current wireless communications.
In mobile communication, suitable selection of antennas and proper setting of the related
parameters may produce great influence upon interference, coverage area, connection rate and
QoS of the communication network. Regarding to antenna array, the spacing of each element is a
crucial factor to be considered for the design of an antenna array, because element spacing has a
direct impact on radiation pattern, correlativity, beam width, beam number and other
characteristics of the antenna array. Accordingly, different technologies impose different
requirements on element spacing for antenna arrays.
First, a brief introduction will be given below to different antenna technologies.
1. Spatial diversity antenna system The spatial diversity antenna exploits the random characteristics of radio propagation by
processing independent (or at least highly uncorrelated) signals received by each antenna
element for improving the quality of the communication system. Radio signals will produce
multipath Rayleigh fading when propagated along complicated radio channels, and its fading
characteristic is different at different spatial positions. When antenna array is adopted to receive
signals, if the output signal of one element is very weak, the output signals of other elements
may not be weak at the same time, so we can select a channel of signal with higher amplitude
and the best SNR through the corresponding combining circuit, to obtain an overall output signal
of the Rx antenna. This reduces the influence of channel fading, improves the reliability of
propagation. Accordingly, the lower the fading correlativity between signals received by each
element, the higher the quality of the combined signal. Therefore, spatial diversity antenna
systems require the spacing between two adjacent elements far enough, to ensure that the fading
characteristics of signals outputted by the Rx antenna are independent.
2. MIMO system
MIMO antenna system has multiple antennas at both the transmitter and receiver, and can
be considered as expansion of spatial diversity antennas. With code re-use method introduced in
MIMO, several different data streams are modulated with the same spreading code and
scrambling code, and transmitted from several element antennas respectively. At the receiver, sub
data streams with different spreading codes can be separated by using the orthogonality of the
spreading codes, while sub data streams with the same spreading codecan be differentiated by
using the uncorrelativity of different antennas. To guarantee that each sub data stream with the
same spreading code can be separated effectively, spacing of each element must be far enough so
as to avoid mutual interference between signals.
3. Smart antenna system
Different from diversity antennas, in beam forming based smart antennas, spacing between
adjacent elements is about half wavelength, so the signal level received by each element is the
same. But due to existence of wave-way difference, each element may have different phase
response to signals from different directions, thereby subsequent signal processing can
distinguish signals from different directions. Signals received by each antenna element are RF
processed, and then weighted with suitable complex weight value and summed, so that the
desired signals are enhanced through in-phase superimposition while interfering signals are
suppressed through out-of-phase superimposition, thus the Rx SNR is enhanced. In other words,
in smart antenna systems, spacing of each element should not be too far way, otherwise some
necessary correlative information between the received signals will be lost.
The above three antenna technologies have different requirements for element spacing in
antenna arrays. In practical circumstances, the size of mobile terminals are usually small, hence
it can be very difficult to change element spacing in mobile terminals depending on different
antenna technologies. Furthermore, with mobile communication systems going increasingly
complicated, it is a trend for various antenna technologies to converge together. For instance,
diversity is combined with beam forming. So a method is needed for flexibly and conveniently
control spacing between each element in the antenna array to adapt to various requirements.
Summary of the Invention
An object of the present invention is to overcome the problem that element spacing in
antennas is difficult to be increased duo to the limited size of terminal products. Another object of the present invention is to provide a simple and feasible method for
flexibly adjusting and controlling element spacing in an antenna array so that the antenna array
can adapt to different technical requirements.
An apparatus for controlling spacing of each element in the antenna array to be used in
wireless communication equipments in accordance with the present invention, comprises: a
plurality of antenna elements, for receiving and transmitting radio signals, wherein at least one
antenna element's position is adjustable; at least one connecting unit, which connects with the
position-adjustable antenna element, for changing said antenna element's position and
transmitting the radio signals received by said antenna element, and transmitting the radio
signals from said wireless communication equipment to be transmitted to said antenna element;
and at least one feeding component, which connects with said connecting unit, for outputting the
radio signals transferred through said connecting unit, and transferring the radio signals to be
transmitted to said connecting unit.
Brief Description of the Drawings
Further descriptions will be given to the present invention in conjunction with
accompanying drawings, wherein:
Fig.1 A is a schematic diagram illustrating a mobile terminal with two antennas structure in
accordance with the first embodiment of the present invention;
Fig. IB is block diagram illustrating how the stretchable stub is connected with the
transceiver in the mobile terminal through the feeder line in the mobile terminal with two
antennas in accordance with the present invention;
Fig.2 is a schematic diagram illustrating the mobile terminal with two antennas structure in
accordance with another embodiment of the present invention;
Fig.3 is a schematic diagram illustrating the mobile terminal with two antennas structure in
accordance with still another embodiment of the present invention.
Detailed Description of the Invention
In following embodiments, bi-antenna structure is exemplified to describe the apparatus for
controlling element spacing in an antenna array in accordance with the present invention,
wherein the component for moving elements in the antenna array can adopt a stretchable stub or
rotatable stub. Detailed description will be given below to the present invention in conjunction with
accompanying drawings and specific embodiments.
As Fig.lA shows, mobile terminal 1 includes two antenna elements 2 and 3, wherein the
position of element 2 is fixed while that of element 3 can be moved through the associated
stretchable stub 4. More specifically, when the mobile terminal is in idle state, elements 2 and 3
are both located within mobile terminal 1. However, when mobile terminal 1 begins to work,
element 2 is fixed while element 3 can be moved from position M to the position N out of mobile
terminal 1 through stretchable stub 4. As to stretchable stub 4 containing a coaxial line or other
similar equipments which can transmit electromagnetic waves, one of its ends is connected with
element 3, and the other with feeder 5 connected to the transceiving unit in the mobile terminal,
thus radio signals received by element 3 can be transferred to the receiving unit within the
mobile terminal through the stretchable stub 4 and feeder 5. Signals from the transmitting unit of
the mobile terminal to be transmitted can also be transmitted from antenna array 3 through feeder
5 and the stretchable stub 4. Fig. IB is block diagram illustrating how element 3 is connected
with transceiver 10 in mobile terminal 1 through stretchable stub 4 and feeder 5 in mobile
terminal 1 with two antennas shown in above Fig.lA. As described above, within the reachable
range of stretchable stub 4, spacing between elements 2 and 3 can achieve one-dimension
adjustment in a certain direction, such as horizontal adjustment, through changing the length of
stretchable stub 4.
Fig.2 is a schematic diagram illustrating how an antenna element is moved through a
rotatable stub in the mobile terminal with two antennas. As Fig.2 shows, in mobile terminal 1
containing a fixed antenna element 2 and a movable antenna element 3, element 3 can be moved
from position M to position N out of the mobile terminal in the way as shown in Fig.lA, as well
as pivoted to position P on a fixed point f located at the surface of mobile terminal 1 by using
rotatable stub 6. As to rotatable stub 6 containing a coaxial line or other similar equipments
which can transmit electromagnetic waves, one of its two ends is connected with element 3, the
other with feeder 5 connected to the transceiving unit in the mobile terminal, thus radio signals
received by element 3 can be transferred to the receiving unit within the mobile terminal,
through the stretchable stub 6 and feeder 5. Signals from the transmitting unit of the mobile
terminal to be transmitted can also be transmitted from antenna array 3 through feeder 5 and the
rotatable stub 6. In the structure as shown in Fig.2, the rotating angle of rotatable stub 6 can be
random within the allowable range. For example, in the plane pivoted around f, the advantage of
this structure is the varying range of spacing can be enlarged greatly without changing the stub,
compared to the same-length stub illustrated in Fig.1 A.
Fig.3 is a schematic diagram illustrating two rotatable elements in a bi-antenna mobile
terminal. Referring to Fig.3, the rotatable antenna element adopts the same architecture as that in
Fig.2. But different from Fig.2, the two elements are both movable, i.e.: after moved from
position la to position 2a out of the mobile terminal, element 2 can randomly rotates from
position 2a to position 3a, pivoted around a fixed point located at the edge of mobile terminal 1,
through rotatable stub 6; while after moved from position lb within the mobile terminal to
position 2b out of the mobile terminal, element 3 can randomly rotates from position 2b to
position 3b, pivoted around a fixed point b located at the edge of mobile terminal 1, through
rotatable stub 6. Radio signals from elements 2 and 3 can be transferred to the receiving unit in
the mobile terminal, respectively through rotatable stub 6 and feeder 5; while signals from the
transmitting unit of the mobile terminal to be transmitted are transmitted from elements 2 and 3,
through feeder 5 and rotatable stub 6. The advantage of this structure is that the varying range of
spacing and the relative direction of two antenna elements 2 and 3 can be much more flexible
than the previous two structures illustrated in Fig.lA and Fig.2, thus greatly increase the
controllable range of element spacing.
Beneficial Results of the Invention
As described above, with regard to the apparatus for controlling spacing of each element in
the antenna array as provided in the present invention, the antenna element can be moved out of
the mobile terminal by using stretchable stub, which well settles the problem that size of the
mobile terminal puts a limit on controlling spacing of elements. Meanwhile, in the apparatus for controlling spacing of each element in the antenna array as
provided in the present invention, the antenna element out of the mobile terminal can be rotated
randomly around a fixed point at the edge of the mobile terminal by using the rotatable stub, thus
the controllable range and precision of element spacing is enhanced.
Moreover, according to the apparatus for controlling spacing of each element in the antenna
array as provided in the present invention, one, many or even all antenna elements can be moved
out of the mobile terminal, thus the relative position and direction between each element in the
antenna array can have higher flexibility and element spacing can have greater controllable
range.
As described above, the apparatus for controlling spacing of each element in the antenna
array as provided in the present invention, can adjusts element spacing flexibly and conveniently.
Hence, the present invention can satisfy requirements of different antenna systems, such as
diversity antenna, smart antenna and MIMO antenna, and thus widely applicable in mobile
terminals in mobile communication systems, wireless terminals in WLAN and mobile radio
terminal equipments. Of course, with regard to the apparatus for controlling space of each element ing the
antenna array provided in the present invent, it is to be understood by those skilled in the art that
the connection components connecting antenna elements and feeders can adopt stretchable stub
and rotatable stub, or be replaced by other similar mechanical components.
It is to be understood by those skilled in the art that the method for controlling spacing of
each element in the antenna array as disclosed in this invention can be modified considerably
without departing from the spirit and scope of the invention as defined by the appended claims.
Claims
What is claimed is: 1. An apparatus for controlling spacing of each element for an antenna array in a wireless communication equipment, comprising: a plurality of antenna elements, for receiving and transmitting radio signals, wherein at least one antenna element's position is adjustable; at least one connecting unit, connected with the position-adjustable antenna element, for changing said antenna element's position, and transmitting the radio signals received by said antenna element, and transmitting the radio signals to be transmitted by said wireless communication equipment to said antenna element. 2. The apparatus according to claim 1, further comprising: at least one feeding component, connected with said connecting unit, for outputting the radio signals transferred through said connecting unit, and transferring the radio signals to be transmitted to said connecting unit. 3. The apparatus according to claim 2, wherein said connecting unit can adjust the position of said antenna element horizontally. 4. The apparatus according to claim 2, wherein said connecting unit can adjust the position of said antenna element within a plane. 5. The apparatus according to claim 2 or 3, wherein said connecting unit can be a stretchable stub. 6. The apparatus according to claim 2 or 4, wherein said connecting unit can be a rotatable stub. 7. The apparatus according to any one of claims 2 to 4, wherein said connecting unit can be a stretchable and rotatable stub. 8. A wireless communication equipment, comprising: a plurality of antenna elements, for receiving and transmitting radio signals, wherein at least one antenna element's position is adjustable; at least one connecting unit, connected with the position-adjustable antenna element, for
changing said antenna element's position, and transmitting the radio signals received by said antenna element, and transferring the radio signals to be transmitted by said wireless communication equipment to said antenna element; a transceiving processing unit, for receiving and processing radio signals from said connecting unit and other elements of said plurality of antenna elements, and transferring the radio signals to be transmitted to said connecting unit and other elements of said plurality of antenna elements. 9. The wireless communication equipment according to claim 8, wherein said connecting unit can be a stretchable stub. 10. The wireless communication equipment according to claim 8, wherein said connecting unit can be a rotatable stub. 11. The wireless communication equipment according to claim 8, wherein said connecting unit can be a stretchable and rotatable stub. 12. A method for controlling spacing of each element for an antenna array in a wireless communication equipment with multi-antenna, comprising: connecting at least one position-adjustable antenna element in the plurality of antenna elements with a connecting unit; connecting said connecting unit with the transceiver in said wireless communication equipment; wherein said connecting unit is for changing the position of said antenna element, and transferring the radio signals received by said antenna element to the transceiver, and transferring the radio signals to be transmitted by the transceiver to said antenna element. 13. The method according to claim 12, wherein the position of said antenna element can be adjusted horizontally. 14. The method according to claim 12 or 13, wherein the position of said antenna element can be adjusted within a plane.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03124913 CN1599486A (en) | 2003-09-19 | 2003-09-19 | Radio communication equipment with device for controlling array element spacing in array antenna |
| CN03124913.2 | 2003-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005029641A1 true WO2005029641A1 (en) | 2005-03-31 |
Family
ID=34321772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2004/051672 WO2005029641A1 (en) | 2003-09-19 | 2004-09-02 | An apparatus for controlling spacing of each element in an antenna array |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1599486A (en) |
| WO (1) | WO2005029641A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617310A1 (en) * | 2004-07-12 | 2006-01-18 | Raytheon Company | Arranging mobile sensors into a predetermined pattern |
| WO2011134511A1 (en) * | 2010-04-28 | 2011-11-03 | Telefonaktiebolaget L M Ericsson (Publ) | Communication device comprising two or more antennas |
| FR3015786A1 (en) * | 2013-12-23 | 2015-06-26 | Thales Sa | COMPACT MARINE ANTENNA WITH ADJUSTABLE DIVERSITY |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010068178A1 (en) * | 2008-12-12 | 2010-06-17 | Nanyang Technological University | Grid array antennas and an integration structure |
| CN103812547A (en) * | 2012-11-14 | 2014-05-21 | 中兴通讯股份有限公司 | Communication device and method and device for beam forming |
| CN103972662A (en) * | 2014-05-07 | 2014-08-06 | 深圳市华信天线技术有限公司 | Anti-interference antenna array with array element separation distances adjustable |
| CN106374234B (en) * | 2015-11-20 | 2019-05-21 | 北京智谷睿拓技术服务有限公司 | Method of controlling antenna, ACU antenna control unit and antenna equipment |
| CN105846079B (en) * | 2016-06-06 | 2018-06-26 | 武汉芯泰科技有限公司 | The restructural antenna of beam direction and the restructural aerial array of beam scanning range |
| CN110581340A (en) * | 2019-08-26 | 2019-12-17 | 维沃移动通信有限公司 | mobile terminal |
| CN110518335A (en) * | 2019-08-26 | 2019-11-29 | 维沃移动通信有限公司 | A kind of mobile terminal |
| CN110518369B (en) * | 2019-08-26 | 2021-01-08 | 维沃移动通信有限公司 | Mobile terminal |
| CN110687498B (en) * | 2019-11-06 | 2023-04-28 | 天津津航计算技术研究所 | Dynamic baseline interferometer |
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| JPH03151701A (en) * | 1989-11-08 | 1991-06-27 | Sharp Corp | Array antenna |
| DE4435344A1 (en) * | 1994-10-01 | 1996-04-04 | Sel Alcatel Ag | Group antennae for hand-held mobile radio |
| US6255996B1 (en) * | 1999-12-02 | 2001-07-03 | Qualcomm Incorporated | Efficient antenna system for a personal communication device |
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| JPH03151701A (en) * | 1989-11-08 | 1991-06-27 | Sharp Corp | Array antenna |
| DE4435344A1 (en) * | 1994-10-01 | 1996-04-04 | Sel Alcatel Ag | Group antennae for hand-held mobile radio |
| US6255996B1 (en) * | 1999-12-02 | 2001-07-03 | Qualcomm Incorporated | Efficient antenna system for a personal communication device |
| US6496157B1 (en) * | 2000-06-20 | 2002-12-17 | Mitsubishi Denki Kabushiki Kaisha | Reconfigurable antenna device for a telecommunication station |
| US20030122714A1 (en) * | 2001-11-16 | 2003-07-03 | Galtronics Ltd. | Variable gain and variable beamwidth antenna (the hinged antenna) |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1617310A1 (en) * | 2004-07-12 | 2006-01-18 | Raytheon Company | Arranging mobile sensors into a predetermined pattern |
| US7379840B2 (en) | 2004-07-12 | 2008-05-27 | Raytheon Company | Arranging mobile sensors into a predetermined pattern |
| WO2011134511A1 (en) * | 2010-04-28 | 2011-11-03 | Telefonaktiebolaget L M Ericsson (Publ) | Communication device comprising two or more antennas |
| US8805459B2 (en) | 2010-04-28 | 2014-08-12 | Telefonaktiebolaget L M Ericsson (Publ) | Communication device comprising two or more antennas |
| FR3015786A1 (en) * | 2013-12-23 | 2015-06-26 | Thales Sa | COMPACT MARINE ANTENNA WITH ADJUSTABLE DIVERSITY |
| WO2015097130A1 (en) * | 2013-12-23 | 2015-07-02 | Thales | Compact marine antenna with adjustable diversity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1599486A (en) | 2005-03-23 |
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