JPS5698035A - Space diversity receiving system - Google Patents

Space diversity receiving system

Info

Publication number
JPS5698035A
JPS5698035A JP4280A JP4280A JPS5698035A JP S5698035 A JPS5698035 A JP S5698035A JP 4280 A JP4280 A JP 4280A JP 4280 A JP4280 A JP 4280A JP S5698035 A JPS5698035 A JP S5698035A
Authority
JP
Japan
Prior art keywords
frequency
synthesizing
signals
frequency characteristics
antennas
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
JP4280A
Other languages
Japanese (ja)
Other versions
JPS596534B2 (en
Inventor
Shigeharu Okamoto
Shozo Komaki
Kojiro Tajima
Toru Kimura
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 JP55000042A priority Critical patent/JPS596534B2/en
Publication of JPS5698035A publication Critical patent/JPS5698035A/en
Publication of JPS596534B2 publication Critical patent/JPS596534B2/en
Expired 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
    • H04B7/0837—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 pre-detection combining
    • H04B7/084—Equal gain combining, only phase adjustments

Landscapes

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

Abstract

PURPOSE:To improve the frequency characteristics, by synthesizing the frequency components with which the signal level become minimum so as to secure the same phase when the signals supplied form the antennas are synthesized. CONSTITUTION:The signals supplied from the antennas 1 and 2 are synthesized by the synthesizing device 5 and then branched into two groups. Furthermore the signals of one group are branched into two parts to be applied to the frequency characteristics detecting circuit 10 and the frequency variable narrow-band pass filter 9. The frequency characteristics is detected at the circuit 10 for the signals after synthesizing to detect the frequency having the minimum level. Then a coincidence is secured between the frequency of the filter 9 and the detected frequency. Accordingly, only the signal component with which the frequency characteristics becomes minimum is applied to the wave detector 9 to ensure a synthesizing of the frequency components with the same phase.
JP55000042A 1980-01-07 1980-01-07 Space diversity reception method Expired JPS596534B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55000042A JPS596534B2 (en) 1980-01-07 1980-01-07 Space diversity reception method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55000042A JPS596534B2 (en) 1980-01-07 1980-01-07 Space diversity reception method

Publications (2)

Publication Number Publication Date
JPS5698035A true JPS5698035A (en) 1981-08-07
JPS596534B2 JPS596534B2 (en) 1984-02-13

Family

ID=11463240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55000042A Expired JPS596534B2 (en) 1980-01-07 1980-01-07 Space diversity reception method

Country Status (1)

Country Link
JP (1) JPS596534B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159920A (en) * 1984-08-31 1986-03-27 Fujitsu Ltd Space diversity control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159920A (en) * 1984-08-31 1986-03-27 Fujitsu Ltd Space diversity control circuit
JPH0471371B2 (en) * 1984-08-31 1992-11-13 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS596534B2 (en) 1984-02-13

Similar Documents

Publication Publication Date Title
JPS51127609A (en) Switching circuit for band width of intermediate frequency amplifying stage of fm receiver
JPS5698035A (en) Space diversity receiving system
JPS5328361A (en) Quadratur e phase detection circuit
JPS5377102A (en) Fm stereo demodulating circuit
JPS5560328A (en) Tuning-point detection circuit of am radio receiver
GB2006578A (en) Diversity Radio Receivers
JPS5383663A (en) Revolving speed display device of revolving body
JPS56128031A (en) Receiving system
JPS577642A (en) Phase-composite space diversity system
JPS567534A (en) Compensating system for identification of cross polarization
JPS5423459A (en) Delay detector
JPS5672548A (en) Space diversity receiving system
JPS5630336A (en) Multipath detecting method
JPS6455923A (en) Space diversity control circuit
JPS5398770A (en) Phase detector circuit
JPS5710541A (en) Space diversity system
JPS52112A (en) Space diversity receiver system
JPS53145453A (en) Frequency band division filter
JPS57184328A (en) Controller for if signal frequency band width of receiver
JPS53120306A (en) Sound demodulation system
JPS5721128A (en) Switching circuit
JPS53105119A (en) Detector for relative ghost strength
JPS5486291A (en) Radio direction detector
JPS545318A (en) Rejection system of interferring distortion caused in demodulation signal due to interference between fm signals
JPS5636063A (en) Sonar receiver