GB626311A - Improvements in antenna systems - Google Patents

Improvements in antenna systems

Info

Publication number
GB626311A
GB626311A GB18432/46A GB1843246A GB626311A GB 626311 A GB626311 A GB 626311A GB 18432/46 A GB18432/46 A GB 18432/46A GB 1843246 A GB1843246 A GB 1843246A GB 626311 A GB626311 A GB 626311A
Authority
GB
United Kingdom
Prior art keywords
guide
axis
reflector
parabola
cylinder
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
GB18432/46A
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 GB626311A publication Critical patent/GB626311A/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
    • H01Q19/10—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
    • H01Q19/13—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 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • 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
    • H01Q19/13—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 the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/134—Rear-feeds; Splash plate feeds

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

626,311. Directive radio systems. WESTERN ELECTRIC CO., Inc. June 19, 1946, No. 18432. Convention date, July 21, 1945. [Class 40 (vii)] Relates to means for producing a pencil beam of rotational symmetry about the axis of the beam having side lobes of negligible amplitude in an aerial system comprising a concave reflector energized by a primary element. According to the invention the reflector is formed by rotating a parabola about a line parallel to the axis of the parabola so that the system has an annular focus. As shown in crosssection in the Figure, the upper and lower sections of the reflector 1 comprise parabolas 7 with axes 13 and 9 and foci 12 and 8 respectively, the surface being formed by revolving one such parabola about the axis 3 to produce a circular focal line which is concentric with the axis 3 and passes through the points 8 and 12. The reflector has a flat vertex portion 6 through which a circular waveguide 19 extends along the axis 3 and the aperture 22 of the guide is enclosed in a coaxial cylindrical member 24 with one end plate 25, the annular aperture 26 between the guide and the open end of the cylinder forming the primary aerial element ; a stream-lined housing (not shown) of electrically transparent material encloses the cylinder and rigidly secures it to the guide. Such a primary aerial produces a quasi-toroidal wavefront with a doublepeaked directivity pattern, Fig. 3 (not shown), which is converted by the reflector 1 into a planar wavefront with the required highlydirective pattern of rotational symmetry, Fig. 4 (not shown). In a modification, Fig. 5 (not shown), the cylinder 24, 25 is replaced by a simple disc 25 supported from the guide by an electrically transparent housing, the ring focus being between the disc and the end of the guide. Suitable dimensions are given for operation of both embodiments at a wavelength of 3 cms.
GB18432/46A 1945-07-21 1946-06-19 Improvements in antenna systems Expired GB626311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US606426A US2482158A (en) 1945-07-21 1945-07-21 Directive antenna system

Publications (1)

Publication Number Publication Date
GB626311A true GB626311A (en) 1949-07-13

Family

ID=24427922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18432/46A Expired GB626311A (en) 1945-07-21 1946-06-19 Improvements in antenna systems

Country Status (5)

Country Link
US (1) US2482158A (en)
BE (1) BE466752A (en)
CH (1) CH255580A (en)
FR (1) FR930057A (en)
GB (1) GB626311A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245103A (en) * 1990-04-09 1991-12-18 Marconi Electronic Devices Antenna with reflectors supported by a waveguide

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605415A (en) * 1945-09-14 1952-07-29 Samuel J Mason Parabolic reflector
US2846679A (en) * 1953-12-15 1958-08-05 Hughes Aircraft Co Beam forming antenna
US2829366A (en) * 1955-03-25 1958-04-01 Raytheon Mfg Co Antenna feed
US2893003A (en) * 1957-06-26 1959-06-30 James S Arnold Antenna feed
NL272285A (en) * 1960-12-19
US3218643A (en) * 1961-03-01 1965-11-16 Peter W Hannan Double-reflector antenna with critical dimensioning to achieve minimum aperture blocking
NO864563L (en) * 1986-06-03 1987-12-04 Sintef REFLECTOR ANTENNA WITH SELF-SUSTAINABLE MEASUREMENT ELEMENT.
FR2600824B1 (en) * 1986-06-25 1988-12-23 Coulet Gilbert BROADBAND ANTENNA FOR MICROWAVE
BR9811241A (en) * 1997-08-21 2000-08-15 Kildal Antenna Consulting Ab Improved reflector antenna with self-supporting power
US6522305B2 (en) 2000-02-25 2003-02-18 Andrew Corporation Microwave antennas

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1281752A (en) * 1918-05-11 1918-10-15 Gen Electric Floodlight-reflector.
FR527896A (en) * 1920-12-04 1921-11-03 Gabriel Guinet Parabolic reflector system for heating and lighting
US1973296A (en) * 1929-04-24 1934-09-11 Telefunken Gmbh Broadcasting system using ultrashort waves
US1857120A (en) * 1930-05-29 1932-05-03 Transom Frederick Projector lamp
DE694423C (en) * 1933-12-14 1940-08-01 Chem Fab Dr Hugo Stoltzenberg Respiratory protection filter with several detachable individual filters connected in series
US2083242A (en) * 1934-01-27 1937-06-08 Telefunken Gmbh Method of direction finding
US2206923A (en) * 1934-09-12 1940-07-09 American Telephone & Telegraph Short wave radio system
US2095083A (en) * 1934-11-17 1937-10-05 Telefunken Gmbh Directional antenna system
US2370053A (en) * 1940-12-31 1945-02-20 Rca Corp Directive antenna system
US2407057A (en) * 1942-01-23 1946-09-03 Rca Corp Antenna system
US2422184A (en) * 1944-01-15 1947-06-17 Bell Telephone Labor Inc Directional microwave antenna

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2245103A (en) * 1990-04-09 1991-12-18 Marconi Electronic Devices Antenna with reflectors supported by a waveguide

Also Published As

Publication number Publication date
BE466752A (en)
CH255580A (en) 1948-06-30
US2482158A (en) 1949-09-20
FR930057A (en) 1948-01-15

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