GB2192506B - Demodulation circuit - Google Patents

Demodulation circuit

Info

Publication number
GB2192506B
GB2192506B GB8617027A GB8617027A GB2192506B GB 2192506 B GB2192506 B GB 2192506B GB 8617027 A GB8617027 A GB 8617027A GB 8617027 A GB8617027 A GB 8617027A GB 2192506 B GB2192506 B GB 2192506B
Authority
GB
United Kingdom
Prior art keywords
demodulation circuit
demodulation
circuit
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 - Fee Related
Application number
GB8617027A
Other versions
GB2192506A (en
GB8617027D0 (en
Inventor
Peter Alan Ramsdale
Philip Stuart Gaskell
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.)
STC PLC
Original Assignee
STC PLC
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 STC PLC filed Critical STC PLC
Priority to GB8617027A priority Critical patent/GB2192506B/en
Publication of GB8617027D0 publication Critical patent/GB8617027D0/en
Publication of GB2192506A publication Critical patent/GB2192506A/en
Application granted granted Critical
Publication of GB2192506B publication Critical patent/GB2192506B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
    • H04L27/1566—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using synchronous sampling
    • 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
    • H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
    • H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB8617027A 1986-07-12 1986-07-12 Demodulation circuit Expired - Fee Related GB2192506B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8617027A GB2192506B (en) 1986-07-12 1986-07-12 Demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8617027A GB2192506B (en) 1986-07-12 1986-07-12 Demodulation circuit

Publications (3)

Publication Number Publication Date
GB8617027D0 GB8617027D0 (en) 1986-08-20
GB2192506A GB2192506A (en) 1988-01-13
GB2192506B true GB2192506B (en) 1990-05-30

Family

ID=10600965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8617027A Expired - Fee Related GB2192506B (en) 1986-07-12 1986-07-12 Demodulation circuit

Country Status (1)

Country Link
GB (1) GB2192506B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220315A (en) * 1988-07-01 1990-01-04 Philips Electronic Associated Signal amplitude-determining apparatus
US5227741A (en) * 1992-01-22 1993-07-13 Glenayre Electronics Ltd. Variable speed asynchronous modem
DE4236547C2 (en) * 1992-10-29 1994-09-29 Hagenuk Telecom Gmbh Homodyne receiver and method for correcting the converted received signal
DE4236546C1 (en) * 1992-10-29 1994-05-05 Hagenuk Telecom Gmbh Homodyne receiver and direct conversion method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065805A1 (en) * 1981-05-27 1982-12-01 Koninklijke Philips Electronics N.V. Receiver for angle-modulated carrier signals
GB2106734A (en) * 1981-09-15 1983-04-13 Standard Telephones Cables Ltd Radio receiver
GB2113930A (en) * 1982-01-26 1983-08-10 Plessey Co Plc Frequency discriminator
GB2149244A (en) * 1983-10-29 1985-06-05 Standard Telephones Cables Ltd Digital demodulator arrangement for quadrature signals

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065805A1 (en) * 1981-05-27 1982-12-01 Koninklijke Philips Electronics N.V. Receiver for angle-modulated carrier signals
GB2106734A (en) * 1981-09-15 1983-04-13 Standard Telephones Cables Ltd Radio receiver
GB2113930A (en) * 1982-01-26 1983-08-10 Plessey Co Plc Frequency discriminator
GB2149244A (en) * 1983-10-29 1985-06-05 Standard Telephones Cables Ltd Digital demodulator arrangement for quadrature signals

Also Published As

Publication number Publication date
GB2192506A (en) 1988-01-13
GB8617027D0 (en) 1986-08-20

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20020712