GB1375680A - - Google Patents
Info
- Publication number
- GB1375680A GB1375680A GB3871973A GB3871973A GB1375680A GB 1375680 A GB1375680 A GB 1375680A GB 3871973 A GB3871973 A GB 3871973A GB 3871973 A GB3871973 A GB 3871973A GB 1375680 A GB1375680 A GB 1375680A
- Authority
- GB
- United Kingdom
- Prior art keywords
- directors
- reflector
- diode
- parasitic
- elements
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
-
- 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
- H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
- H01Q3/446—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element the radiating element being at the centre of one or more rings of auxiliary elements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
1375680 Aerials INTERNATIONAL STANDARD ELECTRIC CORP 16 Aug 1973 [16 Aug 1972] 38719/73 Heading H4A A directive beam aerial arrangement comprises a central driven monopole element P, Fig. 2, and S sets of parasitic elements, each comprising one reflector and p directors, arranged in respective radial planes at angular spacings of # = 360 degrees/S. The elements are disposed normally to a circular metal ground plate, and they have heights of approximately a quarterwavelength at the operating frequency. A feed source is connected between the base of the driven element and the ground plate, and a diode 2, Fig. 3, is connected between the base of each parasitic element and the ground plate. By applying suitable bias voltages through a choke 3 the diode 2 may either be rendered substantially non-conductive, when the associated parasitic element is ineffective, or said diode may be rendered conductive, when the associated parasitic element becomes effective. As shown, three directors are provided in each radial plane, as well as a reflector. The beam from the aerial arrangement may be directed along any of said planes, by rendering the diodes associated with the parasitic elements therein conductive. Additional directivity may be obtained by making other directors effective, as shown in Fig. 4. Here, as well as the reflector R 1 and the directors D 1 , D 2 , D 3 along the beam axis, directors A, A<SP>1</SP>, B, B<SP>1</SP>, C, C<SP>1</SP>, are made effective. The reflector and the additional directors all lie approximately along a parabola which has P as focus. A control arrangement for providing step-by-step rotation of the beam is described with reference to Fig 7 (not shown). This comprises an S-stage shift register, which is stepped by clock pulses and is re-set by means of a flipflop connected to its first and last stages. Output from each stage of the shift register is utilized for biasing the diodes of the associated parasitic reflector and director elements. Since each director is used three times during each beam rotation, i.e., once when it is in line with the beam axis, and twice when it forms part of a parabolic reflector (Fig. 4), outputs from three stages of the shift register are coupled through an OR-gate to each director diode.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7229274A FR2196527B1 (en) | 1972-08-16 | 1972-08-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1375680A true GB1375680A (en) | 1974-11-27 |
Family
ID=9103233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3871973A Expired GB1375680A (en) | 1972-08-16 | 1973-08-16 |
Country Status (7)
Country | Link |
---|---|
US (1) | US3846799A (en) |
JP (1) | JPS49124948A (en) |
AU (1) | AU5921373A (en) |
DE (1) | DE2341111A1 (en) |
FR (1) | FR2196527B1 (en) |
GB (1) | GB1375680A (en) |
NL (1) | NL7311173A (en) |
Families Citing this family (71)
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---|---|---|---|---|
US4387378A (en) * | 1978-06-28 | 1983-06-07 | Harris Corporation | Antenna having electrically positionable phase center |
US4260994A (en) * | 1978-11-09 | 1981-04-07 | International Telephone And Telegraph Corporation | Antenna pattern synthesis and shaping |
DE3237136A1 (en) * | 1982-10-07 | 1984-04-12 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Antenna having a polar diagram which can be pivoted electronically |
US4631546A (en) * | 1983-04-11 | 1986-12-23 | Rockwell International Corporation | Electronically rotated antenna apparatus |
CA1239223A (en) * | 1984-07-02 | 1988-07-12 | Robert Milne | Adaptive array antenna |
FR2602614B1 (en) * | 1986-08-08 | 1989-01-13 | Thomson Csf | TRANSMISSION ANTENNA CAPABLE OF FULLING ON MULTIPLE AXES |
FR2655778B1 (en) * | 1989-12-08 | 1993-12-03 | Thomson Csf | AIRBORNE IFF ANTENNA WITH MULTIPLE SWITCHABLE DIAGRAMS. |
SE514000C2 (en) * | 1992-04-29 | 2000-12-11 | Telia Ab | Method and apparatus for reducing fading between base station and mobile units |
US6542481B2 (en) | 1998-06-01 | 2003-04-01 | Tantivy Communications, Inc. | Dynamic bandwidth allocation for multiple access communication using session queues |
US6081536A (en) | 1997-06-20 | 2000-06-27 | Tantivy Communications, Inc. | Dynamic bandwidth allocation to transmit a wireless protocol across a code division multiple access (CDMA) radio link |
US6222832B1 (en) | 1998-06-01 | 2001-04-24 | Tantivy Communications, Inc. | Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system |
US9525923B2 (en) | 1997-12-17 | 2016-12-20 | Intel Corporation | Multi-detection of heartbeat to reduce error probability |
US7936728B2 (en) | 1997-12-17 | 2011-05-03 | Tantivy Communications, Inc. | System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system |
US7394791B2 (en) | 1997-12-17 | 2008-07-01 | Interdigital Technology Corporation | Multi-detection of heartbeat to reduce error probability |
US8134980B2 (en) | 1998-06-01 | 2012-03-13 | Ipr Licensing, Inc. | Transmittal of heartbeat signal at a lower level than heartbeat request |
US7773566B2 (en) | 1998-06-01 | 2010-08-10 | Tantivy Communications, Inc. | System and method for maintaining timing of synchronization messages over a reverse link of a CDMA wireless communication system |
US7221664B2 (en) | 1998-06-01 | 2007-05-22 | Interdigital Technology Corporation | Transmittal of heartbeat signal at a lower level than heartbeat request |
US6473036B2 (en) | 1998-09-21 | 2002-10-29 | Tantivy Communications, Inc. | Method and apparatus for adapting antenna array to reduce adaptation time while increasing array performance |
US6792290B2 (en) * | 1998-09-21 | 2004-09-14 | Ipr Licensing, Inc. | Method and apparatus for performing directional re-scan of an adaptive antenna |
US6933887B2 (en) * | 1998-09-21 | 2005-08-23 | Ipr Licensing, Inc. | Method and apparatus for adapting antenna array using received predetermined signal |
US6600456B2 (en) | 1998-09-21 | 2003-07-29 | Tantivy Communications, Inc. | Adaptive antenna for use in wireless communication systems |
US6989797B2 (en) * | 1998-09-21 | 2006-01-24 | Ipr Licensing, Inc. | Adaptive antenna for use in wireless communication systems |
JP2001036337A (en) * | 1999-03-05 | 2001-02-09 | Matsushita Electric Ind Co Ltd | Antenna system |
WO2000065372A2 (en) | 1999-04-27 | 2000-11-02 | Brian De Champlain | Single receiver wireless tracking system |
US6683567B2 (en) | 2000-07-18 | 2004-01-27 | Brian De Champlain | Single receiver wireless tracking system |
AU3673001A (en) | 2000-02-07 | 2001-08-14 | Tantivy Communications, Inc. | Minimal maintenance link to support synchronization |
US6515635B2 (en) | 2000-09-22 | 2003-02-04 | Tantivy Communications, Inc. | Adaptive antenna for use in wireless communication systems |
US8155096B1 (en) | 2000-12-01 | 2012-04-10 | Ipr Licensing Inc. | Antenna control system and method |
US6954448B2 (en) | 2001-02-01 | 2005-10-11 | Ipr Licensing, Inc. | Alternate channel for carrying selected message types |
US7551663B1 (en) | 2001-02-01 | 2009-06-23 | Ipr Licensing, Inc. | Use of correlation combination to achieve channel detection |
US6864852B2 (en) * | 2001-04-30 | 2005-03-08 | Ipr Licensing, Inc. | High gain antenna for wireless applications |
US6774852B2 (en) * | 2001-05-10 | 2004-08-10 | Ipr Licensing, Inc. | Folding directional antenna |
US6762722B2 (en) * | 2001-05-18 | 2004-07-13 | Ipr Licensing, Inc. | Directional antenna |
KR100665077B1 (en) | 2001-06-13 | 2007-01-09 | 탄티비 커뮤니케이션즈 인코포레이티드 | Transmittal of heartbeat signal at a lower level than heartbeat request |
US6876337B2 (en) * | 2001-07-30 | 2005-04-05 | Toyon Research Corporation | Small controlled parasitic antenna system and method for controlling same to optimally improve signal quality |
US7038626B2 (en) * | 2002-01-23 | 2006-05-02 | Ipr Licensing, Inc. | Beamforming using a backplane and passive antenna element |
US6888504B2 (en) * | 2002-02-01 | 2005-05-03 | Ipr Licensing, Inc. | Aperiodic array antenna |
EP1488614A4 (en) * | 2002-03-08 | 2008-05-14 | Ipr Licensing Inc | Adaptive receive and omnidirectional transmit antenna array |
EP1490980A4 (en) * | 2002-03-14 | 2005-12-14 | Ipr Licensing Inc | Mobile communication handset with adaptive antenna array |
US7453413B2 (en) * | 2002-07-29 | 2008-11-18 | Toyon Research Corporation | Reconfigurable parasitic control for antenna arrays and subarrays |
US7138956B2 (en) * | 2002-11-14 | 2006-11-21 | Wifi-Plus, Inc. | Apparatus and method for a multi-polarized ground plane beam antenna |
US7047046B2 (en) * | 2003-06-19 | 2006-05-16 | Ipr Licensing, Inc. | Antenna steering for an access point based upon probe signals |
US7587173B2 (en) * | 2003-06-19 | 2009-09-08 | Interdigital Technology Corporation | Antenna steering for an access point based upon spatial diversity |
US7609648B2 (en) * | 2003-06-19 | 2009-10-27 | Ipr Licensing, Inc. | Antenna steering for an access point based upon control frames |
US7103386B2 (en) * | 2003-06-19 | 2006-09-05 | Ipr Licensing, Inc. | Antenna steering and hidden node recognition for an access point |
US6972729B2 (en) * | 2003-06-20 | 2005-12-06 | Wang Electro-Opto Corporation | Broadband/multi-band circular array antenna |
US7239288B2 (en) * | 2003-09-30 | 2007-07-03 | Ipr Licensing, Inc. | Access point antenna for a wireless local area network |
US7340254B2 (en) * | 2004-02-05 | 2008-03-04 | Interdigital Technology Corporation | Measurement opportunities for a mobile unit operating with a switched beam antenna in a CDMA system |
US7295811B2 (en) * | 2004-02-05 | 2007-11-13 | Interdigital Technology Corporation | Method for performing measurements for handoff of a mobile unit operating with a switched beam antenna in a wireless communication system, and corresponding system |
US7308264B2 (en) * | 2004-02-05 | 2007-12-11 | Interdigital Technology Corporation | Method for identifying pre-candidate cells for a mobile unit operating with a switched beam antenna in a wireless communication system, and corresponding system |
US7324817B2 (en) * | 2004-02-07 | 2008-01-29 | Interdigital Technology Corporation | Wireless communication method and apparatus for selecting and reselecting cells based on measurements performed using directional beams and an omni-directional beam pattern |
US7289828B2 (en) * | 2004-03-17 | 2007-10-30 | Interdigital Technology Corporation | Method for steering a smart antenna for a WLAN using a periodic re-scan |
US7236759B2 (en) * | 2004-03-17 | 2007-06-26 | Interdigital Technology Corporation | Method for steering smart antenna beams for a WLAN using signal and link quality metrics |
US7181182B2 (en) * | 2004-03-17 | 2007-02-20 | Interdigital Technology Corporation | Method for steering a smart antenna for a WLAN using a self-monitored re-scan |
US7200376B2 (en) * | 2004-03-17 | 2007-04-03 | Interdigital Technology Corporation | Method for steering smart antenna beams for a WLAN using MAC layer functions |
US7633442B2 (en) * | 2004-06-03 | 2009-12-15 | Interdigital Technology Corporation | Satellite communication subscriber device with a smart antenna and associated method |
US7366464B2 (en) * | 2004-06-04 | 2008-04-29 | Interdigital Technology Corporation | Access point operating with a smart antenna in a WLAN and associated methods |
US7403160B2 (en) * | 2004-06-17 | 2008-07-22 | Interdigital Technology Corporation | Low profile smart antenna for wireless applications and associated methods |
US7482981B2 (en) * | 2004-07-29 | 2009-01-27 | Interdigital Technology Corporation | Corona wind antennas and related methods |
WO2006015121A2 (en) * | 2004-07-29 | 2006-02-09 | Interdigital Technology Corporation | Multi-mode input impedance matching for smart antennas and associated methods |
US7224321B2 (en) * | 2004-07-29 | 2007-05-29 | Interdigital Technology Corporation | Broadband smart antenna and associated methods |
US7180465B2 (en) * | 2004-08-13 | 2007-02-20 | Interdigital Technology Corporation | Compact smart antenna for wireless applications and associated methods |
US7428408B2 (en) * | 2004-09-20 | 2008-09-23 | Interdigital Technology Corporation | Method for operating a smart antenna in a WLAN using medium access control information |
EP1729146A1 (en) * | 2005-06-01 | 2006-12-06 | BAE SYSTEMS (Defence Systems) Limited | Direction finder antenna receiver system |
JP2009094696A (en) * | 2007-10-05 | 2009-04-30 | National Institute Of Information & Communication Technology | Sector antenna |
US8698675B2 (en) | 2009-05-12 | 2014-04-15 | Ruckus Wireless, Inc. | Mountable antenna elements for dual band antenna |
US9407012B2 (en) | 2010-09-21 | 2016-08-02 | Ruckus Wireless, Inc. | Antenna with dual polarization and mountable antenna elements |
US9570799B2 (en) * | 2012-09-07 | 2017-02-14 | Ruckus Wireless, Inc. | Multiband monopole antenna apparatus with ground plane aperture |
US10230161B2 (en) | 2013-03-15 | 2019-03-12 | Arris Enterprises Llc | Low-band reflector for dual band directional antenna |
WO2020171864A2 (en) * | 2018-11-29 | 2020-08-27 | Smartsky Networks LLC | Monopole antenna assembly with directive-reflective control |
CN116068285A (en) * | 2022-12-28 | 2023-05-05 | 中国电信股份有限公司卫星通信分公司 | Satellite antenna network access test method and device and nonvolatile storage medium |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1860123A (en) * | 1925-12-29 | 1932-05-24 | Rca Corp | Variable directional electric wave generating device |
NL46871C (en) * | 1936-01-14 | |||
US3560978A (en) * | 1968-11-01 | 1971-02-02 | Itt | Electronically controlled antenna system |
US3725938A (en) * | 1970-10-05 | 1973-04-03 | Sperry Rand Corp | Direction finder system |
-
1972
- 1972-08-16 FR FR7229274A patent/FR2196527B1/fr not_active Expired
-
1973
- 1973-08-13 US US00387837A patent/US3846799A/en not_active Expired - Lifetime
- 1973-08-14 AU AU59213/73A patent/AU5921373A/en not_active Expired
- 1973-08-14 DE DE19732341111 patent/DE2341111A1/en active Pending
- 1973-08-14 NL NL7311173A patent/NL7311173A/xx not_active Application Discontinuation
- 1973-08-16 JP JP48092044A patent/JPS49124948A/ja active Pending
- 1973-08-16 GB GB3871973A patent/GB1375680A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2341111A1 (en) | 1974-02-28 |
NL7311173A (en) | 1974-02-19 |
FR2196527A1 (en) | 1974-03-15 |
FR2196527B1 (en) | 1977-01-14 |
US3846799A (en) | 1974-11-05 |
JPS49124948A (en) | 1974-11-29 |
AU5921373A (en) | 1975-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |