JPS5612105A - Mechanical-reflectivity-variable radar reflector - Google Patents

Mechanical-reflectivity-variable radar reflector

Info

Publication number
JPS5612105A
JPS5612105A JP8851979A JP8851979A JPS5612105A JP S5612105 A JPS5612105 A JP S5612105A JP 8851979 A JP8851979 A JP 8851979A JP 8851979 A JP8851979 A JP 8851979A JP S5612105 A JPS5612105 A JP S5612105A
Authority
JP
Japan
Prior art keywords
wave
reflecting
slots
reflectivity
reflecting plate
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
JP8851979A
Other languages
Japanese (ja)
Inventor
Morio Onoe
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP8851979A priority Critical patent/JPS5612105A/en
Publication of JPS5612105A publication Critical patent/JPS5612105A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/44—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the electric or magnetic characteristics of reflecting, refracting, or diffracting devices associated with the radiating element
    • H01Q3/46—Active lenses or reflecting arrays

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To obtain passive telemetry that provides the transmission of a relatively- small volume of information from a reflector installation place to a radar office by mechanically varying the reflectivity of a radar reflector to a radio wave. CONSTITUTION:When radio wave Ei strikes perpendicularly the surface of metal reflecting plate 1 of size equivalent to about basic one wavelength, reflecting plate 1 radiates reflected wave Es in the incident direction. However, reflecting plate 3 provided with resonance slots 2 generates next to no reflected wave Es of vertically incident wave Ei coinciding with the polarizing surfaces of the slots. The resonance slot length varies with the size of the reflecting plate not so much, but as the reflecting-plate size increases, the reflecting wave increases. Those slots are closed or opened to generate or cut off the reflected wave Es of vertically incident wave Ei. The reflecting plates with resonance slots are arrayed on a plane to obtain a radar reflector which is variable in mechanical reflectivity.
JP8851979A 1979-07-11 1979-07-11 Mechanical-reflectivity-variable radar reflector Pending JPS5612105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8851979A JPS5612105A (en) 1979-07-11 1979-07-11 Mechanical-reflectivity-variable radar reflector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8851979A JPS5612105A (en) 1979-07-11 1979-07-11 Mechanical-reflectivity-variable radar reflector

Publications (1)

Publication Number Publication Date
JPS5612105A true JPS5612105A (en) 1981-02-06

Family

ID=13945068

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8851979A Pending JPS5612105A (en) 1979-07-11 1979-07-11 Mechanical-reflectivity-variable radar reflector

Country Status (1)

Country Link
JP (1) JPS5612105A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237423U (en) * 1985-06-20 1987-03-05
JPS6237418U (en) * 1985-06-20 1987-03-05

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6237423U (en) * 1985-06-20 1987-03-05
JPS6237418U (en) * 1985-06-20 1987-03-05

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