DE69426013T2 - Verfahren zur automatischen Abstimmung einer Antenne bzw. zur Demodulation eines FSK modulierten Signals - Google Patents

Verfahren zur automatischen Abstimmung einer Antenne bzw. zur Demodulation eines FSK modulierten Signals

Info

Publication number
DE69426013T2
DE69426013T2 DE69426013T DE69426013T DE69426013T2 DE 69426013 T2 DE69426013 T2 DE 69426013T2 DE 69426013 T DE69426013 T DE 69426013T DE 69426013 T DE69426013 T DE 69426013T DE 69426013 T2 DE69426013 T2 DE 69426013T2
Authority
DE
Germany
Prior art keywords
fsk
demodulating
antenna
modulated signal
automatically tuning
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
DE69426013T
Other languages
English (en)
Other versions
DE69426013D1 (de
Inventor
Thomas J Flaxl
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.)
Texas Instruments Deutschland GmbH
Original Assignee
Texas Instruments Deutschland GmbH
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 Texas Instruments Deutschland GmbH filed Critical Texas Instruments Deutschland GmbH
Application granted granted Critical
Publication of DE69426013D1 publication Critical patent/DE69426013D1/de
Publication of DE69426013T2 publication Critical patent/DE69426013T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H03H7/40—Automatic matching of load impedance to source impedance
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J2200/00—Indexing scheme relating to tuning resonant circuits and selecting resonant circuits
    • H03J2200/10—Tuning of a resonator by means of digitally controlled capacitor bank

Landscapes

  • Engineering & Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Transmitters (AREA)
  • Details Of Aerials (AREA)
DE69426013T 1993-06-28 1994-06-28 Verfahren zur automatischen Abstimmung einer Antenne bzw. zur Demodulation eines FSK modulierten Signals Expired - Lifetime DE69426013T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/083,810 US5491715A (en) 1993-06-28 1993-06-28 Automatic antenna tuning method and circuit

Publications (2)

Publication Number Publication Date
DE69426013D1 DE69426013D1 (de) 2000-11-02
DE69426013T2 true DE69426013T2 (de) 2001-05-17

Family

ID=22180855

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69426013T Expired - Lifetime DE69426013T2 (de) 1993-06-28 1994-06-28 Verfahren zur automatischen Abstimmung einer Antenne bzw. zur Demodulation eines FSK modulierten Signals

Country Status (4)

Country Link
US (1) US5491715A (de)
EP (1) EP0663724B1 (de)
JP (1) JPH07193516A (de)
DE (1) DE69426013T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8306489B2 (en) 2008-10-27 2012-11-06 Atmel Corporation Circuit for a loop antenna and method for tuning
DE102019204163B3 (de) * 2019-03-26 2020-10-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Erzeugung eines Abstimmsignals zur Abstimmung einer magnetischen Antenne

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US5491715A (en) 1996-02-13
DE69426013D1 (de) 2000-11-02
JPH07193516A (ja) 1995-07-28
EP0663724A2 (de) 1995-07-19
EP0663724B1 (de) 2000-09-27
EP0663724A3 (de) 1995-11-22

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