CN1111944C - 用于将宽带中频信号变换到复合(正交)基带信号的方法和装置 - Google Patents

用于将宽带中频信号变换到复合(正交)基带信号的方法和装置 Download PDF

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Publication number
CN1111944C
CN1111944C CN98807563A CN98807563A CN1111944C CN 1111944 C CN1111944 C CN 1111944C CN 98807563 A CN98807563 A CN 98807563A CN 98807563 A CN98807563 A CN 98807563A CN 1111944 C CN1111944 C CN 1111944C
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CN
China
Prior art keywords
signal
normalized
circuit
component
freuqncy signal
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Expired - Fee Related
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CN98807563A
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English (en)
Chinese (zh)
Other versions
CN1265237A (zh
Inventor
P·W·登特
R·拉梅斯
G·E·博顿利
R·H·迈尔斯
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Ericsson Inc
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Ericsson Inc
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Publication date
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Publication of CN1265237A publication Critical patent/CN1265237A/zh
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/0848—Joint weighting
    • H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
    • 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
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
    • H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Selective Calling Equipment (AREA)
  • Toys (AREA)
  • Superheterodyne Receivers (AREA)
CN98807563A 1997-07-24 1998-07-08 用于将宽带中频信号变换到复合(正交)基带信号的方法和装置 Expired - Fee Related CN1111944C (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/899879 1997-07-24
US08/899,879 US6195399B1 (en) 1994-03-28 1997-07-24 Method and apparatus for converting a wideband if signal to a complex (quadrature) baseband signal
US08/899,879 1997-07-24

Publications (2)

Publication Number Publication Date
CN1265237A CN1265237A (zh) 2000-08-30
CN1111944C true CN1111944C (zh) 2003-06-18

Family

ID=25411686

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Application Number Title Priority Date Filing Date
CN98807563A Expired - Fee Related CN1111944C (zh) 1997-07-24 1998-07-08 用于将宽带中频信号变换到复合(正交)基带信号的方法和装置

Country Status (13)

Country Link
US (1) US6195399B1 (enExample)
EP (1) EP0998783B1 (enExample)
JP (1) JP4108922B2 (enExample)
KR (1) KR20010022197A (enExample)
CN (1) CN1111944C (enExample)
AR (1) AR018998A1 (enExample)
AU (1) AU746287B2 (enExample)
CA (1) CA2297734A1 (enExample)
DE (1) DE69802096T2 (enExample)
ES (1) ES2166170T3 (enExample)
TW (1) TW385599B (enExample)
WO (1) WO1999005781A1 (enExample)
ZA (1) ZA986430B (enExample)

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US7130332B1 (en) * 1999-04-20 2006-10-31 Symmetricom, Inc. Pilot tracking for synchronization using correlation between digital signal and locally generated version of PN signal
US6823169B2 (en) * 1999-05-25 2004-11-23 Xm Satellite Radio, Inc. Low cost interoperable satellite digital audio radio service (SDARS) receiver architecture
US6934344B2 (en) * 2000-03-27 2005-08-23 Interdigital Technology Corporation Digital automatic gain control
SG111094A1 (en) * 2002-12-05 2005-05-30 Oki Techno Ct Singapore Pte Digital receiver
US7133655B2 (en) * 2004-03-23 2006-11-07 Broadcom Corporation Amplifiers and amplifying methods for use in telecommunications devices
DE102007024013B8 (de) * 2007-05-22 2009-04-16 Atmel Germany Gmbh Signalverarbeitungsvorrichtung und Signalverarbeitungsverfahren
ITMI20110756A1 (it) 2011-05-05 2012-11-06 S Di G Moiraghi & C Soc Sa Ricevitore di segnali in radiofrequenza.
CN102497216B (zh) * 2011-12-02 2014-08-13 中国科学院微电子研究所 一种可配置的接收信号强度指示电路
US10356743B2 (en) 2016-08-05 2019-07-16 Neonic Corporation System and method for wireless location
US10469112B2 (en) * 2017-05-31 2019-11-05 Silicon Laboratories Inc. System, apparatus and method for performing automatic gain control in a receiver for a packet-based protocol
CN108234046B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 接收信号强度调整方法、装置、终端测试系统及电子终端
CN108199787B (zh) * 2017-12-22 2021-07-13 Oppo广东移动通信有限公司 发射功率调整方法、装置、终端测试系统及电子终端
CN108123762B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 发射功率测试方法、装置、系统以及电子设备
CN107896131B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 蓝牙信号调整方法、装置、测试终端、系统及可读介质
CN108039928B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 接收信号强度测试方法、装置、系统以及电子设备
CN108055092B (zh) * 2017-12-22 2021-07-13 Oppo广东移动通信有限公司 蓝牙信号调整方法、装置、测试终端、系统及可读介质
CN108234045B (zh) * 2017-12-22 2021-09-14 Oppo广东移动通信有限公司 接收信号强度调整方法、装置、终端测试系统及电子终端
CN108199785B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 发射功率测试方法、装置、系统以及电子设备
CN108199789B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 蓝牙信号调整方法、装置、测试终端、系统及可读介质
CN108234034B (zh) * 2017-12-22 2021-05-11 Oppo广东移动通信有限公司 蓝牙信号调整方法、装置、测试终端、系统及可读介质
CN108234035B (zh) * 2017-12-22 2021-07-13 Oppo广东移动通信有限公司 发射功率调整方法、装置、终端测试系统及电子终端
CN108234047B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 接收信号强度测试方法、装置、系统以及电子设备
CN108199788B (zh) * 2017-12-22 2021-06-15 Oppo广东移动通信有限公司 发射功率测试方法、装置、系统以及电子设备
CN108199791A (zh) * 2017-12-22 2018-06-22 广东欧珀移动通信有限公司 接收信号强度测试方法、装置、系统以及电子设备
JP7181551B2 (ja) * 2019-01-08 2022-12-01 株式会社北陸精機 メタン生成システム
US12334889B1 (en) 2023-12-14 2025-06-17 Silicon Laboratories Inc. Gain contol to optimize sensitivity and blocking performance

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FR2533095A1 (fr) * 1982-09-09 1984-03-16 Europ Agence Spatiale Procede et dispositif de demodulation d'une onde porteuse modulee en phase par une onde sous-porteuse qui est modulee en deplacement de phase par des signaux en bande de base
US5040059A (en) * 1987-08-03 1991-08-13 Vexcel Corporation Method and apparatus of image mensuration with selectively visible and invisible reseau grid marks
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SE463540B (sv) 1988-09-19 1990-12-03 Ericsson Telefon Ab L M Saett foer att i ett radiokommunikationssystem digitalisera godtyckliga radiosignaler samt anordning foer utoevande av saettet
US4888557A (en) * 1989-04-10 1989-12-19 General Electric Company Digital subharmonic sampling down-converter
US5070303A (en) * 1990-08-21 1991-12-03 Telefonaktiebolaget L M Ericsson Logarithmic amplifier/detector delay compensation
US5285480A (en) * 1991-09-03 1994-02-08 General Electric Company Adaptive MLSE-VA receiver for digital cellular radio
US5214390A (en) * 1992-03-16 1993-05-25 Scientific-Atlanta, Inc. Method and apparatus for partial response demodulation
US5479453A (en) 1993-12-29 1995-12-26 Tsci Corporation Wireless telecommunication digital receiver
US5535432A (en) 1994-09-14 1996-07-09 Ericsson Ge Mobile Communications Inc. Dual-mode satellite/cellular phone with a frequency synthesizer

Also Published As

Publication number Publication date
ZA986430B (en) 1999-02-03
US6195399B1 (en) 2001-02-27
AU8293898A (en) 1999-02-16
AU746287B2 (en) 2002-04-18
ES2166170T3 (es) 2002-04-01
CN1265237A (zh) 2000-08-30
JP4108922B2 (ja) 2008-06-25
TW385599B (en) 2000-03-21
CA2297734A1 (en) 1999-02-04
DE69802096D1 (de) 2001-11-22
AR018998A1 (es) 2001-12-26
EP0998783B1 (en) 2001-10-17
WO1999005781A1 (en) 1999-02-04
KR20010022197A (ko) 2001-03-15
DE69802096T2 (de) 2002-06-20
JP2001511613A (ja) 2001-08-14
EP0998783A1 (en) 2000-05-10

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