GB1342677A - Conical torus antenna - Google Patents
Conical torus antennaInfo
- Publication number
- GB1342677A GB1342677A GB1944871A GB1944871A GB1342677A GB 1342677 A GB1342677 A GB 1342677A GB 1944871 A GB1944871 A GB 1944871A GB 1944871 A GB1944871 A GB 1944871A GB 1342677 A GB1342677 A GB 1342677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- axis
- feed means
- rotation
- reflector
- degrees
- 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
- 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
- H01Q3/12—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 relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—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 relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/14—Reflecting surfaces; Equivalent structures
- H01Q15/16—Reflecting surfaces; Equivalent structures curved in two dimensions, e.g. paraboloidal
-
- 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
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
-
- 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
- H01Q3/12—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 relative movement between primary active elements and secondary devices of antennas or antenna systems
- H01Q3/16—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 relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device
- H01Q3/18—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 relative movement between primary active elements and secondary devices of antennas or antenna systems for varying relative position of primary active element and a reflecting device wherein the primary active element is movable and the reflecting device is fixed
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
1342677 Aerials COMMUNICATIONS SATELLITE CORP 8 June 1971 [8 June 1970] 19448/71 Heading H4A An aerial having a toroidal reflector, the surface of which is described by the rotation of a generating curve about an axis, and which forms a beam when illuminated by a feed means, is characterized by the angle between the said axis of rotation and the axis of the beam being greater than 90 degrees. Said feed means is symmetrically deployable about said axis of rotation, for scanning. As shown in Fig. 3, a generating curve M, which is taken as a parabola with a focus F and an axis Z, is rotated about an axis R which is at an angle α greater than 90 degrees to the said axis Z. The position of the curve M after 180 degrees of rotation is indicated at M<SP>1</SP>. When the reflector surface is illuminated by a source H near the focus F a beam is formed having an axis PA parallel to the axis Z and at an angle α to the axis R. As the feed means is rotated around the axis R, the beam axis PA describes a conical surface. The invention may be applied to an earth station which is located away from the equatorial or orbital plane and which must communicate with more than one satellite positioned along the geostationary arc. For this, scanning along a conical surface is required (Fig. 1, not shown). A plurality of feed means (one for each satellite) may be provided along the focal or feed arc of a toroidal reflector of the kind described. In another embodiment, an intermediate reflecting surface is provided between a feed means and a main toroidal type reflector (Fig. 4, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US4445070A | 1970-06-08 | 1970-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1342677A true GB1342677A (en) | 1974-01-03 |
Family
ID=21932454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1944871A Expired GB1342677A (en) | 1970-06-08 | 1971-06-08 | Conical torus antenna |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS576281B1 (en) |
CA (1) | CA930042A (en) |
DE (1) | DE2127518A1 (en) |
FR (1) | FR2094116B1 (en) |
GB (1) | GB1342677A (en) |
NL (1) | NL7107799A (en) |
SE (1) | SE377232B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111273282A (en) * | 2020-02-20 | 2020-06-12 | 西安爱生技术集团公司 | Unmanned aerial vehicle airborne radar ground scanning coverage area calculation method |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2952317C2 (en) * | 1979-12-24 | 1984-03-08 | Siemens AG, 1000 Berlin und 8000 München | Position-tracking antenna for earth radio stations on a geostationary earth satellite |
JPS6084075U (en) * | 1983-11-11 | 1985-06-10 | パイオニア株式会社 | printed wiring connection strip |
US9766345B2 (en) * | 2013-10-04 | 2017-09-19 | Qualcomm Incorporated | Low cost cableless ground station antenna for medium earth orbit satellite communication systems |
EP3278397A1 (en) | 2015-04-03 | 2018-02-07 | Qualcomm Incorporated | Low cost cableless ground station antenna for medium earth orbit satellite communication systems |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3317912A (en) * | 1963-07-29 | 1967-05-02 | Kenneth S Kelleher | Plural concentric parabolic antenna for omnidirectional coverage |
-
1971
- 1971-06-03 DE DE19712127518 patent/DE2127518A1/en not_active Ceased
- 1971-06-03 JP JP3898271A patent/JPS576281B1/ja active Pending
- 1971-06-04 SE SE729171A patent/SE377232B/xx unknown
- 1971-06-07 CA CA114976A patent/CA930042A/en not_active Expired
- 1971-06-07 NL NL7107799A patent/NL7107799A/xx not_active Application Discontinuation
- 1971-06-08 GB GB1944871A patent/GB1342677A/en not_active Expired
- 1971-06-08 FR FR7120730A patent/FR2094116B1/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111273282A (en) * | 2020-02-20 | 2020-06-12 | 西安爱生技术集团公司 | Unmanned aerial vehicle airborne radar ground scanning coverage area calculation method |
CN111273282B (en) * | 2020-02-20 | 2023-04-14 | 西安爱生技术集团公司 | Unmanned aerial vehicle airborne radar ground scanning coverage area calculation method |
Also Published As
Publication number | Publication date |
---|---|
SE377232B (en) | 1975-06-23 |
FR2094116B1 (en) | 1976-09-03 |
JPS576281B1 (en) | 1982-02-04 |
DE2127518A1 (en) | 1971-12-16 |
NL7107799A (en) | 1971-12-10 |
FR2094116A1 (en) | 1972-02-04 |
CA930042A (en) | 1973-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |