JPS5460819A - Diversity receiving phase control system - Google Patents

Diversity receiving phase control system

Info

Publication number
JPS5460819A
JPS5460819A JP12723577A JP12723577A JPS5460819A JP S5460819 A JPS5460819 A JP S5460819A JP 12723577 A JP12723577 A JP 12723577A JP 12723577 A JP12723577 A JP 12723577A JP S5460819 A JPS5460819 A JP S5460819A
Authority
JP
Japan
Prior art keywords
circuit
signal
output
phase
waves
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
JP12723577A
Other languages
Japanese (ja)
Other versions
JPS576300B2 (en
Inventor
Hideaki Omori
Shozo Komaki
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 JP12723577A priority Critical patent/JPS5460819A/en
Publication of JPS5460819A publication Critical patent/JPS5460819A/en
Publication of JPS576300B2 publication Critical patent/JPS576300B2/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
    • H04B7/0837—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 facilitate easy design and adjustment by constituting the phase control circuit with the digital element and thus to enhance the stability, secular change and control accuracy as well as to realize the common use of the phase control system with the reception device. CONSTITUTION:One of the reception waves of 2-system receives the phase inversion by the low frequency, and then the other wave or both waves is/are processed through the phase shifter. Then the both waves are compounded to detect the signal corresponding to the low frequency, and the phase shifter is controlled using the above detected signal as the phase difference signal to secure the coincidence of the phase for the reception waves. In such diversity reception device, sensing signal S1 extracted through AGC amplifier via divider circuit 4 and using signal S0 sent from clock oscillator 3 as the reference signal is applied to exclusive logical sum circuit 2 which supplies signal S1 via A/D converter 1. Furthermore, shift register 5 which supplies the output of circuit 1 is given reference signal S0 to process the output of circuit 2, output S5 of register 5 and the output of circuit 2 are applied to adder circuit 6, and the contents of reversible counter 7 is modified by output S6 of circuit 6.
JP12723577A 1977-10-25 1977-10-25 Diversity receiving phase control system Granted JPS5460819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12723577A JPS5460819A (en) 1977-10-25 1977-10-25 Diversity receiving phase control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12723577A JPS5460819A (en) 1977-10-25 1977-10-25 Diversity receiving phase control system

Publications (2)

Publication Number Publication Date
JPS5460819A true JPS5460819A (en) 1979-05-16
JPS576300B2 JPS576300B2 (en) 1982-02-04

Family

ID=14955053

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12723577A Granted JPS5460819A (en) 1977-10-25 1977-10-25 Diversity receiving phase control system

Country Status (1)

Country Link
JP (1) JPS5460819A (en)

Also Published As

Publication number Publication date
JPS576300B2 (en) 1982-02-04

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