GB1006218A - Improvements in or relating to antenna systems - Google Patents

Improvements in or relating to antenna systems

Info

Publication number
GB1006218A
GB1006218A GB43805/61A GB4380561A GB1006218A GB 1006218 A GB1006218 A GB 1006218A GB 43805/61 A GB43805/61 A GB 43805/61A GB 4380561 A GB4380561 A GB 4380561A GB 1006218 A GB1006218 A GB 1006218A
Authority
GB
United Kingdom
Prior art keywords
reflector
dec
rotation
hole
aerials
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
Application number
GB43805/61A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1006218A publication Critical patent/GB1006218A/en
Expired legal-status Critical Current

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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/027—Means for reducing undesirable effects for compensating or reducing aperture blockage
    • 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
    • H01Q19/191—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 wherein the primary active element uses one or more deflecting surfaces, e.g. beam waveguide feeds
    • 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
    • H01Q19/195—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 wherein a reflecting surface acts also as a polarisation filter or a polarising device

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)

Abstract

1,006,218. Aerials. WESTERN ELECTRIC CO. Inc. Dec. 7, 1961 [Dec. 27, 1960], No. 43805/61. Heading H4A. Relates to radio aerials based on the Cassegrainian telescope. According to the invention intermediate reflector 20, Fig. 1, reflects circularly-polarized signals having a given direction of rotation and transmits those having an opposite direction of rotation. In one embodiment the feed horn is surmounted by an ellipsoidal reflector 12 one focus of which is at the vertex of the horn and the other at the centre of hole 22 on the longitudinal axis of the main reflector 16; an alternative arrangement includes a plane mirror between reflector 12 and hole 22, Figs. 4A, 4B (neither shown). The intermediate reflector 20 is illustrated in Figs. 3A and 3B; it is composed of square waveguide sections, e.g. 28, the cross-sections of which are staggered to form an approximately spherical surface 30. Each section 28 consists of the three parts illustrated in Fig. 3C. Specification 1,006,219 is referred to.
GB43805/61A 1960-12-27 1961-12-07 Improvements in or relating to antenna systems Expired GB1006218A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US78364A US3195137A (en) 1960-12-27 1960-12-27 Cassegrainian antenna with aperture blocking correction

Publications (1)

Publication Number Publication Date
GB1006218A true GB1006218A (en) 1965-09-29

Family

ID=22143578

Family Applications (2)

Application Number Title Priority Date Filing Date
GB43805/61A Expired GB1006218A (en) 1960-12-27 1961-12-07 Improvements in or relating to antenna systems
GB22007/65A Expired GB1006219A (en) 1960-12-27 1961-12-07 Improvements in or relating to antenna systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB22007/65A Expired GB1006219A (en) 1960-12-27 1961-12-07 Improvements in or relating to antenna systems

Country Status (4)

Country Link
US (1) US3195137A (en)
DE (2) DE1225716B (en)
GB (2) GB1006218A (en)
NL (1) NL272152A (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3271771A (en) * 1962-02-15 1966-09-06 Hazeltine Research Inc Double-reflector, double-feed antenna for crossed polarizations and polarization changing devices useful therein
US3281850A (en) * 1962-03-07 1966-10-25 Hazeltine Research Inc Double-feed antennas operating with waves of two frequencies of the same polarization
FR1419597A (en) * 1964-03-20 1965-12-03 Thomson Houston Comp Francaise Ultra-shortwave antenna improvements
US3340535A (en) * 1964-06-16 1967-09-05 Textron Inc Circular polarization cassegrain antenna
US3510873A (en) * 1965-10-18 1970-05-05 Comelit Comp Elettro It Horn-reflector antenna
FR1477571A (en) * 1966-02-25 1967-04-21 Csf Improvements to focusing device antennas
US3414904A (en) * 1966-05-16 1968-12-03 Hughes Aircraft Co Multiple reflector antenna
US3500419A (en) * 1966-09-09 1970-03-10 Technical Appliance Corp Dual frequency,dual polarized cassegrain antenna
FR1569747A (en) * 1968-03-12 1969-06-06
US3953858A (en) * 1975-05-30 1976-04-27 Bell Telephone Laboratories, Incorporated Multiple beam microwave apparatus
DE2628713C2 (en) * 1976-06-25 1987-02-05 Siemens AG, 1000 Berlin und 8000 München Rotationally symmetric two-mirror antenna
DE2947987C2 (en) * 1979-11-28 1982-03-04 Siemens AG, 1000 Berlin und 8000 München Cassegrain antenna
US4977407A (en) * 1981-07-23 1990-12-11 Crane Patrick E Optical collimator
US4568329A (en) * 1982-03-08 1986-02-04 Mahurkar Sakharam D Double lumen catheter
US4692141A (en) 1982-03-08 1987-09-08 Mahurkar Sakharam D Double lumen catheter
US4583968A (en) * 1983-10-03 1986-04-22 Mahurkar Sakharam D Smooth bore double lumen catheter
US5197951A (en) 1983-12-14 1993-03-30 Mahurkar Sakharam D Simple double lumen catheter
US4770652A (en) * 1985-02-12 1988-09-13 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4623327A (en) * 1985-02-12 1986-11-18 Mahurkar Sakharam D Method and apparatus for using dual-lumen catheters for extracorporeal treatment
US4689632A (en) * 1985-05-30 1987-08-25 Rca Corporation Reflector antenna system having reduced blockage effects
US5003321A (en) * 1985-09-09 1991-03-26 Sts Enterprises, Inc. Dual frequency feed
US4808155A (en) 1986-02-27 1989-02-28 Mahurkar Sakharam D Simple double lumen catheter
GB2234858A (en) * 1988-09-02 1991-02-13 Thorn Emi Electronics Ltd Cassegrain antenna
US5374245A (en) 1990-01-10 1994-12-20 Mahurkar; Sakharam D. Reinforced multiple-lumen catheter and apparatus and method for making the same
US5221255A (en) 1990-01-10 1993-06-22 Mahurkar Sakharam D Reinforced multiple lumen catheter
US5690642A (en) 1996-01-18 1997-11-25 Cook Incorporated Rapid exchange stent delivery balloon catheter
US10879619B2 (en) 2009-06-04 2020-12-29 Ubiquiti Inc. Microwave system
CN113659346B (en) * 2021-07-30 2023-11-21 中国航空工业集团公司济南特种结构研究所 Antenna housing electrical thickness test antenna and use method thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2032588A (en) * 1931-09-12 1936-03-03 Jr Herman Potts Miller Communication and detection system
FR898352A (en) * 1942-06-24 1945-04-20 Telefunken Gmbh Improvements to simultaneous or alternative production systems for two directed radiations
FR911045A (en) * 1943-09-28 1946-06-26 Color Metal A G Cylindrical reflectors producing a wedge-shaped light beam
US2736895A (en) * 1951-02-16 1956-02-28 Elliott Brothers London Ltd High frequency radio aerials
US2741744A (en) * 1951-05-08 1956-04-10 Driscoll Clare Microwave apparatus for circular polarization
US2825032A (en) * 1953-03-10 1958-02-25 Alford Andrew Wave guide mode transformer
US2952017A (en) * 1956-02-23 1960-09-06 Decca Record Co Ltd Waveguide type radar apparatus having polarization converter
DE1075682B (en) * 1956-09-11 1960-02-18 Fabbnca Italiana Magneti Marelli Mailand (Italien) Antenna arrangement especially for radio telephone connections between two stations
US2972743A (en) * 1957-06-19 1961-02-21 Westinghouse Electric Corp Combined infrared-radar antenna
FR1213871A (en) * 1958-10-31 1960-04-05 Thomson Houston Comp Francaise Improvements to microwave antennas
US3089137A (en) * 1959-07-01 1963-05-07 Bell Telephone Labor Inc Polarization tracking receiver

Also Published As

Publication number Publication date
US3195137A (en) 1965-07-13
DE1257227B (en) 1967-12-28
GB1006219A (en) 1965-09-29
NL272152A (en)
DE1225716B (en) 1966-09-29

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