DE60231354D1 - Signalverarbeitung von Empfangssignalen - Google Patents

Signalverarbeitung von Empfangssignalen

Info

Publication number
DE60231354D1
DE60231354D1 DE60231354T DE60231354T DE60231354D1 DE 60231354 D1 DE60231354 D1 DE 60231354D1 DE 60231354 T DE60231354 T DE 60231354T DE 60231354 T DE60231354 T DE 60231354T DE 60231354 D1 DE60231354 D1 DE 60231354D1
Authority
DE
Germany
Prior art keywords
signal processing
received signals
signals
received
signal
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
DE60231354T
Other languages
English (en)
Inventor
Simo Murtojaervi
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Nokia Oyj filed Critical Nokia Oyj
Application granted granted Critical
Publication of DE60231354D1 publication Critical patent/DE60231354D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/24—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits
    • H03D3/241—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop
    • H03D3/247—Modifications of demodulators to reject or remove amplitude variations by means of locked-in oscillator circuits the oscillator being part of a phase locked loop using a controlled phase shifter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
DE60231354T 2001-02-06 2002-02-04 Signalverarbeitung von Empfangssignalen Expired - Lifetime DE60231354D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0102942A GB2371931B (en) 2001-02-06 2001-02-06 Processing received signals

Publications (1)

Publication Number Publication Date
DE60231354D1 true DE60231354D1 (de) 2009-04-16

Family

ID=9908221

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60231354T Expired - Lifetime DE60231354D1 (de) 2001-02-06 2002-02-04 Signalverarbeitung von Empfangssignalen

Country Status (5)

Country Link
US (1) US6912381B2 (de)
EP (1) EP1229663B1 (de)
CN (1) CN100477540C (de)
DE (1) DE60231354D1 (de)
GB (1) GB2371931B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7127226B2 (en) * 2001-12-28 2006-10-24 Matsushita Electric Industrial Co., Ltd. Twin-T dual notch filter
US7313113B1 (en) 2003-04-04 2007-12-25 Airespace, Inc. Dynamic transmit power configuration system for wireless network environments
US8149952B2 (en) * 2003-10-29 2012-04-03 Skyworks Solutions, Inc. Multi-mode receiver
US7392028B2 (en) * 2004-08-26 2008-06-24 Jennic Limited Radio receiver/transceiver including an interface circuit selectively operable in a current mode or a voltage mode
US7551413B2 (en) * 2005-08-26 2009-06-23 Texas Instruments Incorporated Transient triggered protection of IC components
US7787830B2 (en) * 2006-05-30 2010-08-31 Jennic Limited Transceiver and method of operating an electrical circuit
CN102195590B (zh) * 2010-03-18 2015-05-20 联发科技股份有限公司 频率选择电路、信号处理装置和频率选择特性设置方法
US9130642B2 (en) 2010-03-18 2015-09-08 Mediatek Inc. Frequency-selective circuit with mixer module implemented for controlling frequency response, and related signal processing apparatus and method
US8670726B2 (en) * 2010-07-08 2014-03-11 Microsemi Corporation Architecture for coexistence of multiple band radios
US9312897B2 (en) * 2012-10-31 2016-04-12 Qualcomm Incorporated DC offset filter for wide band beamforming receivers

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5212826A (en) 1990-12-20 1993-05-18 Motorola, Inc. Apparatus and method of dc offset correction for a receiver
KR0175381B1 (ko) * 1995-07-03 1999-04-01 김광호 위상 동기 루프 방식 에프엠 검파회로의 출력레벨 조정장치
DE19536520C2 (de) * 1995-09-29 1997-09-11 Siemens Ag Schaltungsanordnung zur Gleichspannungs- und Wechselspannungsauskoppelung
FI112131B (fi) * 1996-02-08 2003-10-31 Nokia Corp Menetelmä ja piirijärjestely signaalin erojännitteen pienentämiseksi
FI106328B (fi) 1996-02-08 2001-01-15 Nokia Mobile Phones Ltd Menetelmä ja piirijärjestely vastaanotetun signaalin käsittelemiseksi
US5898912A (en) * 1996-07-01 1999-04-27 Motorola, Inc. Direct current (DC) offset compensation method and apparatus
KR20000064336A (ko) * 1996-09-06 2000-11-06 요트.게.아. 롤페즈 제로 중간 주파수 수신기
US7024221B2 (en) * 2001-01-12 2006-04-04 Silicon Laboratories Inc. Notch filter for DC offset reduction in radio-frequency apparatus and associated methods
US6757340B1 (en) 1999-02-22 2004-06-29 Telefonaktiebolaget L M Ericsson (Publ) Radio receiver and method for preloading an average DC-offset into a channel filter
US6735422B1 (en) * 2000-10-02 2004-05-11 Baldwin Keith R Calibrated DC compensation system for a wireless communication device configured in a zero intermediate frequency architecture
US6654593B1 (en) * 2000-10-30 2003-11-25 Research In Motion Limited Combined discrete automatic gain control (AGC) and DC estimation
US6509777B2 (en) * 2001-01-23 2003-01-21 Resonext Communications, Inc. Method and apparatus for reducing DC offset

Also Published As

Publication number Publication date
US6912381B2 (en) 2005-06-28
CN100477540C (zh) 2009-04-08
EP1229663B1 (de) 2009-03-04
GB0102942D0 (en) 2001-03-21
GB2371931A (en) 2002-08-07
EP1229663A3 (de) 2005-02-02
CN1370024A (zh) 2002-09-18
GB2371931B (en) 2004-10-20
US20020168956A1 (en) 2002-11-14
EP1229663A2 (de) 2002-08-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition