JPS5657307A - Directivity switching system for reception antenna - Google Patents

Directivity switching system for reception antenna

Info

Publication number
JPS5657307A
JPS5657307A JP13452679A JP13452679A JPS5657307A JP S5657307 A JPS5657307 A JP S5657307A JP 13452679 A JP13452679 A JP 13452679A JP 13452679 A JP13452679 A JP 13452679A JP S5657307 A JPS5657307 A JP S5657307A
Authority
JP
Japan
Prior art keywords
reception
circuit
tuning
constitution
tuning voltage
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.)
Granted
Application number
JP13452679A
Other languages
Japanese (ja)
Other versions
JPS6232843B2 (en
Inventor
Shigeki Takeda
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP13452679A priority Critical patent/JPS5657307A/en
Publication of JPS5657307A publication Critical patent/JPS5657307A/en
Publication of JPS6232843B2 publication Critical patent/JPS6232843B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0871—Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

PURPOSE:To simplify the circuit constitution, by switching the directivity of the reception antenna with a control given to the tuning voltage of the tuning circuit following plural numbers of electric reception parts and then giving a switching to the electric reception parts. CONSTITUTION:When the reception is under process by the electric reception part A1, the control tuning voltage corresponding to the reception frequency is supplied to the tuning circuit D1. Thus the reception input is taken in mainly from part A1 via the adder S. If the multipath noise mixes under reception at the part A1, the tuning voltage of the circuit D1 is switched automatically to avoid the correspondence dence to the reception frequency. And at the same time, the tuning voltage corresponding to the reception frequency is supplied automatically to either one of the tuning circuits D2-DN. Thus the directivity is switched for the reception antenna. In such constitution, the elements such as other relays or the like can be eliminated to simplify the circuit constitution.
JP13452679A 1979-10-17 1979-10-17 Directivity switching system for reception antenna Granted JPS5657307A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13452679A JPS5657307A (en) 1979-10-17 1979-10-17 Directivity switching system for reception antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13452679A JPS5657307A (en) 1979-10-17 1979-10-17 Directivity switching system for reception antenna

Publications (2)

Publication Number Publication Date
JPS5657307A true JPS5657307A (en) 1981-05-19
JPS6232843B2 JPS6232843B2 (en) 1987-07-17

Family

ID=15130376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13452679A Granted JPS5657307A (en) 1979-10-17 1979-10-17 Directivity switching system for reception antenna

Country Status (1)

Country Link
JP (1) JPS5657307A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006020207A (en) * 2004-07-05 2006-01-19 Nec Infrontia Corp Antenna assembly

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587706U (en) * 1978-12-06 1980-06-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5587706U (en) * 1978-12-06 1980-06-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006020207A (en) * 2004-07-05 2006-01-19 Nec Infrontia Corp Antenna assembly

Also Published As

Publication number Publication date
JPS6232843B2 (en) 1987-07-17

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