JPS5637705A - Reflector antenna - Google Patents

Reflector antenna

Info

Publication number
JPS5637705A
JPS5637705A JP11308279A JP11308279A JPS5637705A JP S5637705 A JPS5637705 A JP S5637705A JP 11308279 A JP11308279 A JP 11308279A JP 11308279 A JP11308279 A JP 11308279A JP S5637705 A JPS5637705 A JP S5637705A
Authority
JP
Japan
Prior art keywords
shield
periphery
shadow boundary
masking shield
retroradiation
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
JP11308279A
Other languages
Japanese (ja)
Inventor
Yasuhiro Kimura
Hiroshi Ushigome
Yoshiro Konno
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.)
Mitsubishi Electric Corp
Nippon Telegraph and Telephone Corp
Original Assignee
Mitsubishi Electric Corp
Nippon Telegraph and Telephone 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 Mitsubishi Electric Corp, Nippon Telegraph and Telephone Corp filed Critical Mitsubishi Electric Corp
Priority to JP11308279A priority Critical patent/JPS5637705A/en
Publication of JPS5637705A publication Critical patent/JPS5637705A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • H01Q17/001—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems for modifying the directional characteristic of an aerial

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

PURPOSE:To suppress the retroradiation caused at the periphery of the shadow boundary and the diffracted wave, by attaching the electric wave absorber onto the inner wall of the masking shield and at the same time reducing the electric field at the tip of the masking shield by the length of the masking shield. CONSTITUTION:The electric wave absorber 5 is attached onto the inner wall of the masking shield 4 in an appropriate width to absorb the spill-over power of the primary radiator 3 which contributes to the radiation property at the periphery of the shadow boundary. As a result, the radiation property can be reduced at the shadow boundary and its periphery. Furthermore, the electric field at the tip P of the shield 4 can be reduced over the circle circumference with use of the length (h) of the shield 4 which is obtained from the equation. Accordingly, the retroradiation property can be suppressed. In the equation, D shows the aperture diameter of the reflector 2, lambda is the wavelength, and i=3, 5... respectively.
JP11308279A 1979-09-04 1979-09-04 Reflector antenna Pending JPS5637705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11308279A JPS5637705A (en) 1979-09-04 1979-09-04 Reflector antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11308279A JPS5637705A (en) 1979-09-04 1979-09-04 Reflector antenna

Publications (1)

Publication Number Publication Date
JPS5637705A true JPS5637705A (en) 1981-04-11

Family

ID=14603019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11308279A Pending JPS5637705A (en) 1979-09-04 1979-09-04 Reflector antenna

Country Status (1)

Country Link
JP (1) JPS5637705A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157302A (en) * 1984-01-27 1985-08-17 Mitsubishi Electric Corp Double reflector antenna

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4957748A (en) * 1972-10-02 1974-06-05

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4957748A (en) * 1972-10-02 1974-06-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157302A (en) * 1984-01-27 1985-08-17 Mitsubishi Electric Corp Double reflector antenna

Similar Documents

Publication Publication Date Title
JPS53131977A (en) Activated gas generator
IT1125666B (en) INFRARED RADIATION SUPPRESSOR PARTICULARLY SUITABLE FOR ENGINE DISCHARGE
GB2028004B (en) Wide band high power circulators operating at very high orultra high frequencies
DK178479A (en) PARABOLIC REFLECTOR ANTENNA WITH OPTIMAL RADIATION CHARACTERISTICS
JPS5637705A (en) Reflector antenna
JPS5637703A (en) Reflector antenna
BR7900203A (en) SUN RAY CAPTOR
JPS5637704A (en) Reflector antenna
JPS5637707A (en) Antenna device
JPS53145562A (en) Electronic gun
JPS5720002A (en) Short backfire antenna
JPS5637708A (en) Antenna device
JPS5592002A (en) Antenna unit
JPS5535577A (en) Antenna device
JPS5390677A (en) Fluorescent lamp
JPS5419122A (en) Fryback transformer
JPS5271185A (en) Rotating anode x-ray tube
JPS53136941A (en) Antenna device
JPS543491A (en) Gas laser tube
JPS57150204A (en) Microwave band antenna
JPS5637706A (en) Antenna device
JPS5277999A (en) Shielding block for neutron
JPS54127261A (en) Parabolic antenna
SU672456A1 (en) Plant for thermal radiation drying of radio components with axial ferromagnetic leads
JPS5295177A (en) Electronic beam mask and manufacture