JPS5595403A - Antenna unit - Google Patents

Antenna unit

Info

Publication number
JPS5595403A
JPS5595403A JP198379A JP198379A JPS5595403A JP S5595403 A JPS5595403 A JP S5595403A JP 198379 A JP198379 A JP 198379A JP 198379 A JP198379 A JP 198379A JP S5595403 A JPS5595403 A JP S5595403A
Authority
JP
Japan
Prior art keywords
antenna
antenna unit
mentioned
differing
comparison
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
JP198379A
Other languages
Japanese (ja)
Inventor
Masanori Matsumura
Atsushi Tanaka
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 JP198379A priority Critical patent/JPS5595403A/en
Publication of JPS5595403A publication Critical patent/JPS5595403A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
    • 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
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

PURPOSE:To miniaturize an antenna shape by providing two antennae differing in opening length and crossing at right angles and by using the both for transmission and reception respectively. CONSTITUTION:Transmitting antenna 19 and receiving antenna 20 differing in opening length are provided crossing at right angles. The result of a comparison between beam characteristics of the antenna unit of the above-mentioned constitution and those of an antenna unit which alternates transmitted and received waves and has an equal opening degree is mentioned hereafter. Namely, beam characteristics in a far field are nearly equivalent mutually and those in a near field can be attained by smaller one than the antenna with the equal opening degree. Therefore, using the antenna unit formed in the above-mentioned way provides miniaturization of an antenna shape so as to obtain identical transmission and reception patterns in comparison with a conventional antenna unit.
JP198379A 1979-01-11 1979-01-11 Antenna unit Pending JPS5595403A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP198379A JPS5595403A (en) 1979-01-11 1979-01-11 Antenna unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP198379A JPS5595403A (en) 1979-01-11 1979-01-11 Antenna unit

Publications (1)

Publication Number Publication Date
JPS5595403A true JPS5595403A (en) 1980-07-19

Family

ID=11516733

Family Applications (1)

Application Number Title Priority Date Filing Date
JP198379A Pending JPS5595403A (en) 1979-01-11 1979-01-11 Antenna unit

Country Status (1)

Country Link
JP (1) JPS5595403A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04253402A (en) * 1991-01-30 1992-09-09 Nec Corp Patch antenna array

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04253402A (en) * 1991-01-30 1992-09-09 Nec Corp Patch antenna array

Similar Documents

Publication Publication Date Title
GB2067843B (en) Quasi-optical frequency diplexer
DE3066140D1 (en) High frequency circuit block for simultaneously transmitting and receiving, transmitter-receiver for millimeter waves and radar using such a circuit block
JPS5595403A (en) Antenna unit
AU585114B2 (en) Circularly polarized leaky waveguide doppler antenna
EP0322498A3 (en) Primary radiator for parabolic antenna
GB890296A (en) Improvements in or relating to electromagnetic wave transmission systems and apparatus for use therewith
JPS5366760A (en) Transmission and reception of sound waves
ES8704053A1 (en) Transmitter-receiver system in a satelite.
SE8304937D0 (en) MONOPULAR METERS FOR SENDING AND RECEIVING RADAR SIGNALS WITHIN TWO DIFFERENT FREQUENCY BANDS
JPS5644201A (en) Antifogging plate glass equipped with omnidirectional receiving antenna
JPS5613809A (en) Antenna device
JPS5671304A (en) Antenna for circular polarized wave
JPS5637702A (en) Electric wave lens element
AU7560787A (en) Angular-diversity radiating system for tropospheric-scatter radio links
CA2041572A1 (en) Dual band frequency reuse antenna
JPS56136003A (en) Antenna device
JPS567502A (en) Simple antenna train with high front-back ratio
JPS5717244A (en) Radio communication system
JPS54121094A (en) Double polarized wave transmission/reception circuit
JPS5761305A (en) Disturbing-wave removing antenna
JPS5481755A (en) Antenna unit for tracking radar
JPS5412552A (en) Spherical shell lens antenna
JPS57145405A (en) Array antenna device
JPS54146563A (en) Circular polarized wave transmitter/receiver
Timofeyeva A broadband nonaxisymmetrical antenna with an aperture diameter of 1. 5 m.