DE3132233C2 - - Google Patents

Info

Publication number
DE3132233C2
DE3132233C2 DE3132233A DE3132233A DE3132233C2 DE 3132233 C2 DE3132233 C2 DE 3132233C2 DE 3132233 A DE3132233 A DE 3132233A DE 3132233 A DE3132233 A DE 3132233A DE 3132233 C2 DE3132233 C2 DE 3132233C2
Authority
DE
Germany
Prior art keywords
frequency
mixer
signals
local oscillator
flop
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.)
Expired - Lifetime
Application number
DE3132233A
Other languages
German (de)
English (en)
Other versions
DE3132233A1 (de
Inventor
Peter Edward Chadwick
Philip Albert Kenneth Moon
Norman Cameron Swindon Wiltshire Gb Thompson
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.)
Plessey Semiconductors Ltd
Original Assignee
Plessey Overseas 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 Plessey Overseas Ltd filed Critical Plessey Overseas Ltd
Publication of DE3132233A1 publication Critical patent/DE3132233A1/de
Application granted granted Critical
Publication of DE3132233C2 publication Critical patent/DE3132233C2/de
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits
    • H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Structure Of Receivers (AREA)
DE19813132233 1980-08-23 1981-08-14 "rundfunkempfaenger" Granted DE3132233A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8027511A GB2086158B (en) 1980-08-23 1980-08-23 Radio receiver

Publications (2)

Publication Number Publication Date
DE3132233A1 DE3132233A1 (de) 1982-06-24
DE3132233C2 true DE3132233C2 (OSRAM) 1991-10-02

Family

ID=10515636

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813132233 Granted DE3132233A1 (de) 1980-08-23 1981-08-14 "rundfunkempfaenger"

Country Status (7)

Country Link
DE (1) DE3132233A1 (OSRAM)
DK (1) DK155066C (OSRAM)
FR (1) FR2489059B1 (OSRAM)
GB (1) GB2086158B (OSRAM)
HK (1) HK48485A (OSRAM)
NO (1) NO152190C (OSRAM)
SE (1) SE452832B (OSRAM)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137836B (en) * 1983-04-06 1986-07-23 Multitone Electronics Plc Fm demodulators
US4580101A (en) * 1983-04-06 1986-04-01 Multitone Electronics Plc FM demodulators with local oscillator frequency control circuits
GB2146876B (en) * 1983-09-14 1987-03-04 Plessey Co Plc Fsk radio receiver
SE470077B (sv) * 1992-03-30 1993-11-01 Ericsson Ge Mobile Communicat Metod och anordning för demodulering av en frekvensmodulerad signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1172977A (en) * 1965-11-23 1969-12-03 Plessey Co Ltd Improvements in or relating to Demodulation Systems
US3414826A (en) * 1967-04-03 1968-12-03 Gen Electric Voltage-controlled oscillator
JPS5831065B2 (ja) * 1976-04-09 1983-07-04 日本電気株式会社 Ｆｓｋ復調装置
GB2076238B (en) * 1980-05-16 1983-11-30 Plessey Co Ltd Radio receiver

Also Published As

Publication number Publication date
GB2086158A (en) 1982-05-06
NO152190B (no) 1985-05-06
NO152190C (no) 1985-08-14
DK155066C (da) 1989-07-03
NO812770L (no) 1982-02-24
DE3132233A1 (de) 1982-06-24
DK365181A (da) 1982-02-24
HK48485A (en) 1985-06-28
FR2489059A1 (fr) 1982-02-26
SE8104972L (sv) 1982-02-24
FR2489059B1 (fr) 1986-07-18
SE452832B (sv) 1987-12-14
DK155066B (da) 1989-01-30
GB2086158B (en) 1984-05-02

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8128 New person/name/address of the agent

Representative=s name: PRINZ, E., DIPL.-ING. LEISER, G., DIPL.-ING., PAT.

D2 Grant after examination
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PLESSEY SEMICONDUCTORS LTD., SWINDON, WILTSHIRE, G

8328 Change in the person/name/address of the agent

Free format text: PRINZ, E., DIPL.-ING. LEISER, G., DIPL.-ING. SCHWEPFINGER, K., DIPL.-ING. BUNKE, H., DIPL.-CHEM. DR.RER.NAT. DEGWERT, H., DIPL.-PHYS., PAT.-ANWAELTE, 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee