JPS55137703A - Antenna unit - Google Patents

Antenna unit

Info

Publication number
JPS55137703A
JPS55137703A JP4570579A JP4570579A JPS55137703A JP S55137703 A JPS55137703 A JP S55137703A JP 4570579 A JP4570579 A JP 4570579A JP 4570579 A JP4570579 A JP 4570579A JP S55137703 A JPS55137703 A JP S55137703A
Authority
JP
Japan
Prior art keywords
circuit
phase shifter
null point
phase
receiver
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
JP4570579A
Inventor
Yoshio Ishigaki
Yasuo Osada
Kimitake Utsunomiya
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP4570579A priority Critical patent/JPS55137703A/en
Publication of JPS55137703A publication Critical patent/JPS55137703A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26Arrangements 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 relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • H01Q3/2611Means for null steering; Adaptive interference nulling
    • H01Q3/2617Array of identical elements
    • H01Q3/2623Array of identical elements composed of two antennas

Abstract

PURPOSE:To obtain a disturbing wave removing unit where adjustment is easy and the null point is not changed for a receiving frequency, by connecting a variable phase shifter to one of two sets of antennas and by connecting a phase correcting circuit to the other and by synthesizing two signals in a synthesizer. CONSTITUTION:Signals from antennas 1 and 2 are taken out through switch 7, and, for example, the signal from antenna 2 and the signal from antenna 1 are supplied to difference synthesizing circuit 4 through variable phase shifter 5 and phase correcting circuit 3 respectively. The output of circuit 4 is transmitted from terminal 3 to a TV receiver, and a DC voltage is superposed onto this transmission line in the receiver side and is supplied to phase shifter 5 through choke coil 35 and coil 31, thereby controlling a varactor diode. Circuit 3 and phase shifter 5 are constituted by LPF types, and the capacity of circuit 3 is fixed. If the impedance and the capacity of circuit 3 and phase shifter 5 are set to prescribed values, phase difference becomes fixed throughout all bands of the receiving frequency, and the null point is held fixed, so that the user can change the null point near the receiver to remove the disturbing wave easily.
JP4570579A 1979-04-13 1979-04-13 Antenna unit Pending JPS55137703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4570579A JPS55137703A (en) 1979-04-13 1979-04-13 Antenna unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4570579A JPS55137703A (en) 1979-04-13 1979-04-13 Antenna unit

Publications (1)

Publication Number Publication Date
JPS55137703A true JPS55137703A (en) 1980-10-27

Family

ID=12726774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4570579A Pending JPS55137703A (en) 1979-04-13 1979-04-13 Antenna unit

Country Status (1)

Country Link
JP (1) JPS55137703A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1829160A1 (en) * 2004-12-21 2007-09-05 Electronics and Telecommunications Research Institute Ultra isolation antenna
US7512384B2 (en) 2002-11-01 2009-03-31 Fujitsu Limited Control unit and a control method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7512384B2 (en) 2002-11-01 2009-03-31 Fujitsu Limited Control unit and a control method
EP1829160A1 (en) * 2004-12-21 2007-09-05 Electronics and Telecommunications Research Institute Ultra isolation antenna
EP1829160A4 (en) * 2004-12-21 2008-08-13 Korea Electronics Telecomm Ultra isolation antenna
US7868837B2 (en) 2004-12-21 2011-01-11 Electronics And Telecommunications Research Institute Ultra isolation antenna

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