JPS5733804A - Reflector antenna - Google Patents

Reflector antenna

Info

Publication number
JPS5733804A
JPS5733804A JP10865780A JP10865780A JPS5733804A JP S5733804 A JPS5733804 A JP S5733804A JP 10865780 A JP10865780 A JP 10865780A JP 10865780 A JP10865780 A JP 10865780A JP S5733804 A JPS5733804 A JP S5733804A
Authority
JP
Japan
Prior art keywords
feed part
antennas
phase
wave angle
reflector
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.)
Pending
Application number
JP10865780A
Other languages
Japanese (ja)
Inventor
Shinichi Ito
Tsugio Yamazaki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10865780A priority Critical patent/JPS5733804A/en
Publication of JPS5733804A publication Critical patent/JPS5733804A/en
Pending 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
    • H01Q19/17—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 comprising two or more radiating elements

Landscapes

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

Abstract

PURPOSE:To vary the phase of the radiation electric field of a primary feed part so as to correspond to a variation of a wave angle, and to increase a detection probability of a low wave angle area by improvement of the primary feed part, by setting the relative phase of a secondary pattern by the upper part of a reflector, and a secondary pattern by the lower part, to a suitable value. CONSTITUTION:To a reflector 3 of a dual beam system radar antenna are placed a low beam feed part 1 and a high beam feed part 2 on its upper and lower parts, respectively. A primary feed part to the reflector 3 of said constitution is constituted of horn antennas 12, 13, these antennas 12, 13 are placed in parallel on the upper and lower parts, and the ratio of electric power to be fed to these antennas 12, 13 is varied by an electric power distributor 14, and is made in phase. In accordance with a wave angle theta whose right angle has been made ''0'' to the opening of the antennas 12, 13, the ratio of electric power to be fed to the antenna 12 or 13 is varied by the distributor 14, phase of the radiation electric field of the primary feed part is varied in accordance with a variation of the wave angle theta, and a covered area in the angle area of the low wave angle theta is expanded.
JP10865780A 1980-08-07 1980-08-07 Reflector antenna Pending JPS5733804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10865780A JPS5733804A (en) 1980-08-07 1980-08-07 Reflector antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10865780A JPS5733804A (en) 1980-08-07 1980-08-07 Reflector antenna

Publications (1)

Publication Number Publication Date
JPS5733804A true JPS5733804A (en) 1982-02-24

Family

ID=14490355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10865780A Pending JPS5733804A (en) 1980-08-07 1980-08-07 Reflector antenna

Country Status (1)

Country Link
JP (1) JPS5733804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0647359A4 (en) * 1991-08-06 1994-08-30 Int Standard Electric Corp Asr system for microburst detection.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4718671U (en) * 1971-04-06 1972-11-01
JPS5099010A (en) * 1973-12-27 1975-08-06
JPS50130341A (en) * 1974-03-21 1975-10-15
JPS5599804A (en) * 1979-01-24 1980-07-30 Toshiba Corp Reflection mirror antenna

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4718671U (en) * 1971-04-06 1972-11-01
JPS5099010A (en) * 1973-12-27 1975-08-06
JPS50130341A (en) * 1974-03-21 1975-10-15
JPS5599804A (en) * 1979-01-24 1980-07-30 Toshiba Corp Reflection mirror antenna

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0647359A4 (en) * 1991-08-06 1994-08-30 Int Standard Electric Corp Asr system for microburst detection.
EP0647359A1 (en) * 1991-08-06 1995-04-12 INTERNATIONAL STANDARD ELECTRIC CORPORATION (a Delaware corporation) Asr system for microburst detection
US5491489A (en) * 1991-08-06 1996-02-13 Itt Corporation ASR system for microburst detection

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