JPS5781706A - Multifrequency shared antenna - Google Patents

Multifrequency shared antenna

Info

Publication number
JPS5781706A
JPS5781706A JP15769680A JP15769680A JPS5781706A JP S5781706 A JPS5781706 A JP S5781706A JP 15769680 A JP15769680 A JP 15769680A JP 15769680 A JP15769680 A JP 15769680A JP S5781706 A JPS5781706 A JP S5781706A
Authority
JP
Japan
Prior art keywords
mirror
focus
mirror surface
intersection
referred
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
JP15769680A
Other languages
Japanese (ja)
Inventor
Makoto Ando
Kenji Ueno
Hiroyuki Kumazawa
Hidekazu Ogawa
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP15769680A priority Critical patent/JPS5781706A/en
Publication of JPS5781706A publication Critical patent/JPS5781706A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • H01Q5/45—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements using two or more feeds in association with a common reflecting, diffracting or refracting device

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To ensure the sharing of a sheet of reflector for multiple frequencies, by giving the zoning to a part of a rotary paraboloidal mirror of a reflector antenna to a certain frequency and supplying different frequencies independently from different focuses corresponding to each other. CONSTITUTION:Areas 6 and 7 of a mirror surface of a reflector antenna are rotary paraboloids based on a focus 5 and then set so that a coincidence is obtained the original mirror surface 1 and the rotation symmetric axis. Thus a mirror surface 6 contacts with the surface 1 at A on the symmetric shaft. Here the intersection between the mirror surfaces 7 and 1 is referred to as C, and an edge part which cuts the surface 6 by a cone connecting the intersection C and a focus F' is referred to as B respectively. Then the ring-shaped surface 7 is connected to the outside of the surface 6 with no change of position to obtain a composite mirror surface of ABCD. A distance l1 between the surfaces 6 and 7 is designed so that the value 2l1 is equivalent to an integer-fold value of the free space wavelength of the electric wave to be supplied on the focus 5. A radiator is installed on focuses 2 and 5 respectively.
JP15769680A 1980-11-11 1980-11-11 Multifrequency shared antenna Pending JPS5781706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15769680A JPS5781706A (en) 1980-11-11 1980-11-11 Multifrequency shared antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15769680A JPS5781706A (en) 1980-11-11 1980-11-11 Multifrequency shared antenna

Publications (1)

Publication Number Publication Date
JPS5781706A true JPS5781706A (en) 1982-05-21

Family

ID=15655377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15769680A Pending JPS5781706A (en) 1980-11-11 1980-11-11 Multifrequency shared antenna

Country Status (1)

Country Link
JP (1) JPS5781706A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603211A (en) * 1983-06-20 1985-01-09 Nec Corp Antenna in common use for multi-frequency band
JPS603210A (en) * 1983-06-20 1985-01-09 Nec Corp Antenna in common use for multi-frequency band
FR2595874A1 (en) * 1986-03-13 1987-09-18 Boeing Co DUAL MODE SIGNAL SEPARATOR
US4825223A (en) * 1986-11-25 1989-04-25 Tsiger Systems Corporation Microwave reflector assembly
US5512913A (en) * 1992-07-15 1996-04-30 Staney; Michael W. Flat plate antenna, scaler collector and supporting structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603211A (en) * 1983-06-20 1985-01-09 Nec Corp Antenna in common use for multi-frequency band
JPS603210A (en) * 1983-06-20 1985-01-09 Nec Corp Antenna in common use for multi-frequency band
JPH0566763B2 (en) * 1983-06-20 1993-09-22 Nippon Electric Co
FR2595874A1 (en) * 1986-03-13 1987-09-18 Boeing Co DUAL MODE SIGNAL SEPARATOR
US4825223A (en) * 1986-11-25 1989-04-25 Tsiger Systems Corporation Microwave reflector assembly
US5512913A (en) * 1992-07-15 1996-04-30 Staney; Michael W. Flat plate antenna, scaler collector and supporting structure

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