JPS57157650A - Receiver - Google Patents

Receiver

Info

Publication number
JPS57157650A
JPS57157650A JP56042952A JP4295281A JPS57157650A JP S57157650 A JPS57157650 A JP S57157650A JP 56042952 A JP56042952 A JP 56042952A JP 4295281 A JP4295281 A JP 4295281A JP S57157650 A JPS57157650 A JP S57157650A
Authority
JP
Japan
Prior art keywords
controlling section
receiving
frequency
filters
filter
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
JP56042952A
Other languages
Japanese (ja)
Other versions
JPS6336696B2 (en
Inventor
Toshiaki Ito
Hiroshi Harada
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56042952A priority Critical patent/JPS57157650A/en
Priority to US06/360,536 priority patent/US4435821A/en
Priority to EP82301538A priority patent/EP0061351B1/en
Priority to DE8282301538T priority patent/DE3265965D1/en
Publication of JPS57157650A publication Critical patent/JPS57157650A/en
Publication of JPS6336696B2 publication Critical patent/JPS6336696B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • H04B2001/71563—Acquisition

Landscapes

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

Abstract

PURPOSE:To remove disturbance, interference, etc., coming from the outside and to sharply improve the receiving condition, by consisting a receiving band limiting filter in such a way that the filter can be switched in accordance with the frequency of receiving high frequency waves. CONSTITUTION:A controlling section 6 which switches plural filters 4 having narrow band widths in accordance with variations in the frequency at the transmitting side from a synchronized time, is provided. Incoming radio waves are inputted into the controlling section 6 through an antenna 1 and a broad band filter 2. When the incoming radio wave is synchronized at the controlling section 6, a high frequency wave by-pass switch becomes nonconductive, and a narrow band filter switching device 5 switches the filters 4 in comformity to the receiving frequency under control of the controlling section 6. A demondulating section 7 outputs a demodulation output to an output terminal 8 by using the output of one of the filters 2, 4 as an input.
JP56042952A 1981-03-24 1981-03-24 Receiver Granted JPS57157650A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP56042952A JPS57157650A (en) 1981-03-24 1981-03-24 Receiver
US06/360,536 US4435821A (en) 1981-03-24 1982-03-22 Receiver in a frequency hopping communication system
EP82301538A EP0061351B1 (en) 1981-03-24 1982-03-24 Receiver in a frequency hopping communication system
DE8282301538T DE3265965D1 (en) 1981-03-24 1982-03-24 Receiver in a frequency hopping communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56042952A JPS57157650A (en) 1981-03-24 1981-03-24 Receiver

Publications (2)

Publication Number Publication Date
JPS57157650A true JPS57157650A (en) 1982-09-29
JPS6336696B2 JPS6336696B2 (en) 1988-07-21

Family

ID=12650351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56042952A Granted JPS57157650A (en) 1981-03-24 1981-03-24 Receiver

Country Status (1)

Country Link
JP (1) JPS57157650A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03297234A (en) * 1990-04-16 1991-12-27 Hitachi Ltd Spread spectrum receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03297234A (en) * 1990-04-16 1991-12-27 Hitachi Ltd Spread spectrum receiver

Also Published As

Publication number Publication date
JPS6336696B2 (en) 1988-07-21

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