JPS56122532A - Receiving antenna system - Google Patents

Receiving antenna system

Info

Publication number
JPS56122532A
JPS56122532A JP2628080A JP2628080A JPS56122532A JP S56122532 A JPS56122532 A JP S56122532A JP 2628080 A JP2628080 A JP 2628080A JP 2628080 A JP2628080 A JP 2628080A JP S56122532 A JPS56122532 A JP S56122532A
Authority
JP
Japan
Prior art keywords
switching
antenna
multipath
noise component
detection
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
JP2628080A
Other languages
Japanese (ja)
Other versions
JPS6253970B2 (en
Inventor
Shigeki Takeda
Junichi Shibata
Masashi Shimakata
Yasuhiro Oshime
Shintaro Gomi
Katsuaki Kawamura
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 JP2628080A priority Critical patent/JPS56122532A/en
Publication of JPS56122532A publication Critical patent/JPS56122532A/en
Publication of JPS6253970B2 publication Critical patent/JPS6253970B2/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
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0814—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching based on current reception conditions, e.g. switching to different antenna when signal level is below threshold

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To make no noise component based on switching of the antenna appear in the detection output, by sending out continuously a receiving signal immediately before switching, simultaneously with the detection of a multipath noise, and also until the switching operation of the antenna is finished. CONSTITUTION:When receiving by the antenna 6, if the influence of a multipath appears in the output waveform A, and a noise component appears in the detection output C, the multipath detection circuit 8 provides a switching control signal F to the switching means 9. The means 9 switches the antenna from 6 to 7 so that the receiving signals of both the antennas are sent out by overlapping until the switching operation is finished. As a result, since the level is lowered only a little when the receiving signal is switched, a noise component based on switching is not superposed on the detection output C.
JP2628080A 1980-03-03 1980-03-03 Receiving antenna system Granted JPS56122532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2628080A JPS56122532A (en) 1980-03-03 1980-03-03 Receiving antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2628080A JPS56122532A (en) 1980-03-03 1980-03-03 Receiving antenna system

Publications (2)

Publication Number Publication Date
JPS56122532A true JPS56122532A (en) 1981-09-26
JPS6253970B2 JPS6253970B2 (en) 1987-11-12

Family

ID=12188867

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2628080A Granted JPS56122532A (en) 1980-03-03 1980-03-03 Receiving antenna system

Country Status (1)

Country Link
JP (1) JPS56122532A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077832A1 (en) * 2005-01-18 2006-07-27 Ntt Docomo, Inc. Mobile communication terminal and reception diversity interrupting method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102613A (en) * 1977-02-18 1978-09-07 Nissan Motor Receiver

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53102613A (en) * 1977-02-18 1978-09-07 Nissan Motor Receiver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006077832A1 (en) * 2005-01-18 2006-07-27 Ntt Docomo, Inc. Mobile communication terminal and reception diversity interrupting method
US7853231B2 (en) 2005-01-18 2010-12-14 Ntt Docomo, Inc. Mobile communication terminal and associated methodology for reception during diversity interruption

Also Published As

Publication number Publication date
JPS6253970B2 (en) 1987-11-12

Similar Documents

Publication Publication Date Title
JPS56128030A (en) Mobile receiving antenna system
JPS56122532A (en) Receiving antenna system
JPS5779739A (en) Space diversity reception system
JPS56122535A (en) Antenna equipment
JPS5575379A (en) Multiple signal demodulator
JPS57212880A (en) Automatically switchable directional antenna device
ES459130A1 (en) Receiver for a HF-intrusion detection system
JPS56122531A (en) Receiving antenna system
JPS5485620A (en) Squelch circuit
JPS56158541A (en) Diversity receiver for car
JPS53110313A (en) Auotmatic frequency control circuit with auotmatic frequency control signal transmission system state switched and changed automatically according to receiving state
FR2399172A1 (en) Demodulator switching in SECAM colour TV - is provided by gating control signal with horizontal synchronising signal
JPS57184328A (en) Controller for if signal frequency band width of receiver
JPS56110066A (en) Guidance system in underwater cruising body
JPS54121611A (en) Noise eliminating circuit
JPS5286714A (en) Muting system in angular modulating wave decoding circuit
JPS56122223A (en) Automatic dx and local reception switching device
JPS5665533A (en) Receiver for car
JPS5578683A (en) Receiver
JPS5672570A (en) Facsimile communication system
JPS5549045A (en) Muting signal generator
JPS57174957A (en) Multi-path interference rejecting circuit
JPS56122530A (en) Receiving system
JPS6439834A (en) Fm radio receiver
JPS57121335A (en) Diversity receiving device for vehicle