JPS5739603A - Effective area antenna - Google Patents

Effective area antenna

Info

Publication number
JPS5739603A
JPS5739603A JP11506780A JP11506780A JPS5739603A JP S5739603 A JPS5739603 A JP S5739603A JP 11506780 A JP11506780 A JP 11506780A JP 11506780 A JP11506780 A JP 11506780A JP S5739603 A JPS5739603 A JP S5739603A
Authority
JP
Japan
Prior art keywords
grooves
lambda
plane
mirror
reflecting
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
JP11506780A
Other languages
Japanese (ja)
Inventor
Naohisa Goto
Yoshihiko Mikuni
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11506780A priority Critical patent/JPS5739603A/en
Publication of JPS5739603A publication Critical patent/JPS5739603A/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

Landscapes

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

Abstract

PURPOSE:To suppress cross polarization component, by engraving a plurality of grooves on a reflecting plane of a reflecting mirror. CONSTITUTION:A blow type antenna 2 is provided by opposing to a reflecting plane of a parabolic reflection mirror 1, and a plurality of concentric grooves 3 are engraved on the reflection plane of the mirror 1. Where lambda is the wavelength, the depth D of the grooves 3 is lambda/4 and the width W is selected sufficiently smaller than lambda. Thus, a current component flowing to the (y) direction orthogonal to the (x) direction being the polarized plane major direction of the antenna 2 can be cancelled and the radiation of the cross polarization component can be suppressed by the provision of the grooves 3.
JP11506780A 1980-08-21 1980-08-21 Effective area antenna Pending JPS5739603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11506780A JPS5739603A (en) 1980-08-21 1980-08-21 Effective area antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11506780A JPS5739603A (en) 1980-08-21 1980-08-21 Effective area antenna

Publications (1)

Publication Number Publication Date
JPS5739603A true JPS5739603A (en) 1982-03-04

Family

ID=14653351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11506780A Pending JPS5739603A (en) 1980-08-21 1980-08-21 Effective area antenna

Country Status (1)

Country Link
JP (1) JPS5739603A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60224410A (en) * 1984-04-23 1985-11-08 井関農機株式会社 Operation apparatus of combine
JPH01212102A (en) * 1988-02-19 1989-08-25 Agency Of Ind Science & Technol Self-standing type primary radiator for reflection mirror antenna
WO2006064536A1 (en) * 2004-12-13 2006-06-22 Mitsubishi Denki Kabushiki Kaisha Antenna device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881454A (en) * 1972-01-31 1973-10-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4881454A (en) * 1972-01-31 1973-10-31

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60224410A (en) * 1984-04-23 1985-11-08 井関農機株式会社 Operation apparatus of combine
JPH0545207B2 (en) * 1984-04-23 1993-07-08 Iseki Agricult Mach
JPH01212102A (en) * 1988-02-19 1989-08-25 Agency Of Ind Science & Technol Self-standing type primary radiator for reflection mirror antenna
WO2006064536A1 (en) * 2004-12-13 2006-06-22 Mitsubishi Denki Kabushiki Kaisha Antenna device

Similar Documents

Publication Publication Date Title
DE3577955D1 (en) LASER PRINTER WITH TWO OPERATING MODES.
AU528012B2 (en) Laser energy control circuit
JPS5739603A (en) Effective area antenna
JPS5321594A (en) High energy laser
JPS52119331A (en) Laser recording device
JPS5423449A (en) Electronic scanning reflector antenna
JPS5599804A (en) Reflection mirror antenna
DE3577725D1 (en) EXPRESSION VECTORS WITH HIGH COPIES.
JPS525540A (en) Laser bundle magnifier
JPS5624371A (en) Slit exposure type lighting device
JPS5377159A (en) Multi beam antenna
JPS52127259A (en) Observing surface sharpe
JPS5765901A (en) Radome
JPS5331108A (en) Information recording member
DE3484684D1 (en) MULTI-BEAM ANTENNA WITH HIGH EFFICIENCY.
JPS57135914A (en) Light flux rotating device
JPS54103657A (en) Array antenna
JPS6449930A (en) Multiple reflection cell
JPS5547704A (en) Multi-beam antenna
JPS5530239A (en) Parabolic antenna
JPS647701A (en) Drop-in isolator
JPS5613810A (en) Horn antenna
JPS562704A (en) Fan-shaped beam antenna
JPS56152301A (en) Dielectric wave director type primary radiator of multiple reflection mirror antenna
JPS57143887A (en) Semiconductor laser