EP0322498A3 - Primary radiator for parabolic antenna - Google Patents

Primary radiator for parabolic antenna Download PDF

Info

Publication number
EP0322498A3
EP0322498A3 EP88103388A EP88103388A EP0322498A3 EP 0322498 A3 EP0322498 A3 EP 0322498A3 EP 88103388 A EP88103388 A EP 88103388A EP 88103388 A EP88103388 A EP 88103388A EP 0322498 A3 EP0322498 A3 EP 0322498A3
Authority
EP
European Patent Office
Prior art keywords
covering member
radio wave
illumination aperture
parabolic antenna
primary radiator
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.)
Withdrawn
Application number
EP88103388A
Other languages
German (de)
French (fr)
Other versions
EP0322498A2 (en
Inventor
Nobutaka Inoue
Seiichi Honma
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.)
Maspro Denkoh Corp
Original Assignee
Maspro Denkoh 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 Maspro Denkoh Corp filed Critical Maspro Denkoh Corp
Publication of EP0322498A2 publication Critical patent/EP0322498A2/en
Publication of EP0322498A3 publication Critical patent/EP0322498A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
    • 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
    • H01Q19/06—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 refracting or diffracting devices, e.g. lens
    • H01Q19/08—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 refracting or diffracting devices, e.g. lens for modifying the radiation pattern of a radiating horn in which it is located

Abstract

An illumination aperture (6) for receiving radio waves in a radio wave introducing member (2) is blocked by a covering member (17), and thus dust is prevented from coming into the illumination aperture externally by the covering member. The covering member is so thick as will coincide with the trough in a transmission loss curve of radio wave of the synthetic resin used as a forming material for the covering member. Accordingly, a mechanical strength of the covering member is high. Then, an expected attentuation of the radio wave going toward the illumination aperture through the covering member is very little.
EP88103388A 1987-12-02 1988-03-04 Primary radiator for parabolic antenna Withdrawn EP0322498A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP304753/87 1987-12-02
JP30475387 1987-12-02

Publications (2)

Publication Number Publication Date
EP0322498A2 EP0322498A2 (en) 1989-07-05
EP0322498A3 true EP0322498A3 (en) 1990-05-23

Family

ID=17936810

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103388A Withdrawn EP0322498A3 (en) 1987-12-02 1988-03-04 Primary radiator for parabolic antenna

Country Status (1)

Country Link
EP (1) EP0322498A3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116095A1 (en) * 1991-05-17 1992-11-19 Uwe Heynen Weather guard for parabolic-antenna polariser - comprises transparent plastic cap resistant to UV without dampening or scattering waves
DE4124011C1 (en) * 1991-07-19 1992-10-01 Philips Patentverwaltung Gmbh, 2000 Hamburg, De
DE4215554C2 (en) * 1992-05-12 1994-10-06 Ant Nachrichtentech Cover for antenna radiators
WO1994001899A1 (en) * 1992-07-02 1994-01-20 W. L. Gore & Associates, Inc. Sealing frame and protective membrane for a radar dish or horn
DE19838406C1 (en) * 1998-08-24 2000-04-06 Siemens Ag Radome for free end of high-frequency waveguide
FR2782846A1 (en) * 1998-08-28 2000-03-03 Thomson Csf One-piece radome for protecting hyper-frequency airborne systems has transparent fiberglass zone and carbon-fiber zone to absorb parasite waves
JP3784715B2 (en) 2001-12-26 2006-06-14 シャープ株式会社 Feed horn structure, manufacturing method thereof, converter and antenna for satellite communication reception

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114123A (en) * 1960-08-03 1963-12-10 Emi Ltd Wave guide window having edge sealed in bottom of choke
DE2060923A1 (en) * 1969-12-10 1971-07-29 Comp Generale Electricite Dielectric lens for the emission of electromagnetic rays
DE2222952A1 (en) * 1972-02-21 1973-11-22 Siemens Ag PRESSURE-SEALING, WEATHER-RESISTANT, DIELECTRIC SEALING DISC FOR A HOLLOW CONDUCTOR LAMP

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113142A (en) * 1976-03-18 1977-09-22 New Japan Radio Co Ltd Water proof system for microwave antenna

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114123A (en) * 1960-08-03 1963-12-10 Emi Ltd Wave guide window having edge sealed in bottom of choke
DE2060923A1 (en) * 1969-12-10 1971-07-29 Comp Generale Electricite Dielectric lens for the emission of electromagnetic rays
DE2222952A1 (en) * 1972-02-21 1973-11-22 Siemens Ag PRESSURE-SEALING, WEATHER-RESISTANT, DIELECTRIC SEALING DISC FOR A HOLLOW CONDUCTOR LAMP

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
A.W. RUDGE et al.: "THE HANDBOCK OF ANTENNA DESIGN" vol. 2, 1983, Peter Peregrinus London, GB *
ELECTRONICS LETTERS vol. 17, no. 21, October 1981, pages 777-779, London, GB; W.S. DAVIES et al.: "Bird-Proff Feed-Horn Windows for Microwave Radio System Antennas" *
PATENT ABSTRACTS OF JAPAN vol. 1, no. 165 (E-77)(9383), 26 December 1977; & JP-A-52 113 142 (SHIN NIPPON SEITETSU K.K.) 22.09.1977 *

Also Published As

Publication number Publication date
EP0322498A2 (en) 1989-07-05

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