IL43841A - Frequency extension of circularly polarized antenna - Google Patents

Frequency extension of circularly polarized antenna

Info

Publication number
IL43841A
IL43841A IL43841A IL4384173A IL43841A IL 43841 A IL43841 A IL 43841A IL 43841 A IL43841 A IL 43841A IL 4384173 A IL4384173 A IL 4384173A IL 43841 A IL43841 A IL 43841A
Authority
IL
Israel
Prior art keywords
antenna
wide band
antenna assembly
assembly according
spiral
Prior art date
Application number
IL43841A
Other versions
IL43841A0 (en
Original Assignee
Bendix Corp
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 Bendix Corp filed Critical Bendix Corp
Publication of IL43841A0 publication Critical patent/IL43841A0/en
Publication of IL43841A publication Critical patent/IL43841A/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • H01Q9/27—Spiral antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/40—Radiating elements coated with or embedded in protective material
    • H01Q1/405—Radome integrated radiating elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Aerials With Secondary Devices (AREA)

Claims (6)

WHAT WE OLAIW IS ; 43841-2
1. A wide "band microwave antenna assembly comprising a spiral antenna fixed to a surface of a substrate of insulating material, said antenna including a pair of interlaced spiral elements having terminals near the axis of said assembly, a cavity structure with conductive walls and of generally cylindrical configuration supporting said antenna assembly and positioned at the back of said spiral antenna, and a lower frequency linearly polarized antenna extension comprisin a ground plane-backed dipole element electrically connected to the outside ends of each of said spiral elements.
2. A wide band microwave antenna assembly according to Claim 1 , wherein the overall width of the assembly is substantially one-half wave length at the lowest frequency for which the antenna is designed to operate.
3. A wide band antenna assembly according to Claim 2, wherein said cavity and the abound planes backing said dipole elements are lined with microwave absorbing material.
4. . A wide band antenna assembly according to Claim 2 or 3, wherein the surface supporting the spiral antenna and the dipole elements are conformed to fi against a rounded radome structure. 43841-2
5. · A wide band antenna assembly according to Claim 2 or 3 , wherein said surface is dome-shaped and said dipole elements are curved. ;
6. A wide band antenna assembly according to anyone of Claims 2 - 5 , wherein the height of said antenna tracks and dipole members from the back walls of their respective cavities is less than one-quarter wave-length at the lower frequency -for which the antenna is designed to operate, 7 · wide band microwave antenna assembly, substantially as described in the specification with reference to and as illustrated in Figures 1 and 2 or ' in Figures 2 and 3 of the accompanying drawings. For the Applicants DR. REINHOLD CQHN AND PARTNERS *ys A.
IL43841A 1972-12-26 1973-12-17 Frequency extension of circularly polarized antenna IL43841A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00318137A US3820117A (en) 1972-12-26 1972-12-26 Frequency extension of circularly polarized antenna

Publications (2)

Publication Number Publication Date
IL43841A0 IL43841A0 (en) 1974-03-14
IL43841A true IL43841A (en) 1976-05-31

Family

ID=23236818

Family Applications (1)

Application Number Title Priority Date Filing Date
IL43841A IL43841A (en) 1972-12-26 1973-12-17 Frequency extension of circularly polarized antenna

Country Status (6)

Country Link
US (1) US3820117A (en)
JP (1) JPS5746241B2 (en)
DE (1) DE2362913C3 (en)
FR (1) FR2211767B1 (en)
GB (1) GB1388230A (en)
IL (1) IL43841A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042935A (en) * 1974-08-01 1977-08-16 Hughes Aircraft Company Wideband multiplexing antenna feed employing cavity backed wing dipoles
US4309706A (en) * 1974-11-14 1982-01-05 The United States Of America As Represented By The Secretary Of The Navy Wideband direction-finding system
US4032921A (en) * 1975-09-08 1977-06-28 American Electronic Laboratories, Inc. Broad-band spiral-slot antenna
US4012744A (en) * 1975-10-20 1977-03-15 Itek Corporation Helix-loaded spiral antenna
US4015264A (en) * 1975-11-20 1977-03-29 Textron, Inc. Dual mode broadband antenna
JPS58974Y2 (en) * 1976-11-19 1983-01-08 防衛庁技術研究本部長 antenna equipment
US4114164A (en) * 1976-12-17 1978-09-12 Transco Products, Inc. Broadband spiral antenna
CA1104712A (en) * 1978-09-08 1981-07-07 Robert Milne Broadband shaped beam antenna
US4348677A (en) * 1979-06-25 1982-09-07 General Dynamics, Pomona Division Common aperture dual mode seeker antenna
US4697192A (en) * 1985-04-16 1987-09-29 Texas Instruments Incorporated Two arm planar/conical/helix antenna
EP0280644A3 (en) * 1987-02-26 1989-03-01 Schumacher, Hanns-Joachim, Dr. med. dent. Arrangement for detecting and/or influencing electromagnetic waves, method of making the arrangement and antenna for carrying out the method and for setting up the arrangement
FR2751470B1 (en) * 1989-08-03 1999-02-19 Dassault Electronique IMPROVED SPIRAL ANTENNA DEVICE
FR2665324B1 (en) * 1990-07-27 1996-08-14 Thomson Csf METHOD FOR MANUFACTURING PRINTED CIRCUIT AND CIRCUIT OBTAINED BY THIS PROCESS.
WO1992013372A1 (en) * 1991-01-24 1992-08-06 Rdi Electronics, Inc. Broadband antenna
US6104353A (en) * 1998-06-30 2000-08-15 Rdi Electronics, Inc. Local television antenna system for use with direct broadcast satellite television systems
SE516235C2 (en) 1999-06-18 2001-12-03 Ericsson Telefon Ab L M Tunable coil antenna
RU2163739C1 (en) * 2000-07-20 2001-02-27 Криштопов Александр Владимирович Antenna
WO2003105273A2 (en) * 2002-06-10 2003-12-18 Hrl Laboratories, Llc Low profile, dual polarized/pattern antenna
US7199763B2 (en) * 2004-05-03 2007-04-03 Lockheed Martin Corporation Ground proximity antenna system
DE102013214189A1 (en) * 2013-07-19 2015-01-22 Plath Gmbh Arrangement and a method for installing a DF antenna in a radome, preferably for retrofitting into a radome
US10992046B2 (en) * 2019-06-12 2021-04-27 Bae Systems Information And Electronic Systems Integration Inc. Low profile high gain dual polarization UHF/VHF antenna

Also Published As

Publication number Publication date
FR2211767B1 (en) 1979-05-04
DE2362913B2 (en) 1978-12-21
DE2362913A1 (en) 1974-06-27
GB1388230A (en) 1975-03-26
JPS4998558A (en) 1974-09-18
US3820117A (en) 1974-06-25
FR2211767A1 (en) 1974-07-19
DE2362913C3 (en) 1979-08-16
IL43841A0 (en) 1974-03-14
JPS5746241B2 (en) 1982-10-02

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