TW255077B - - Google Patents

Info

Publication number
TW255077B
TW255077B TW083102928A TW83102928A TW255077B TW 255077 B TW255077 B TW 255077B TW 083102928 A TW083102928 A TW 083102928A TW 83102928 A TW83102928 A TW 83102928A TW 255077 B TW255077 B TW 255077B
Authority
TW
Taiwan
Application number
TW083102928A
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of TW255077B publication Critical patent/TW255077B/zh

Links

Classifications

    • 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
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Superheterodyne Receivers (AREA)
  • Noise Elimination (AREA)
  • Measurement Of Radiation (AREA)
  • Radar Systems Or Details Thereof (AREA)
TW083102928A 1993-03-08 1994-04-02 TW255077B (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/027,997 US5412690A (en) 1993-03-08 1993-03-08 Method and apparatus for receiving electromagnetic radiation within a frequency band

Publications (1)

Publication Number Publication Date
TW255077B true TW255077B (zh) 1995-08-21

Family

ID=21840992

Family Applications (1)

Application Number Title Priority Date Filing Date
TW083102928A TW255077B (zh) 1993-03-08 1994-04-02

Country Status (6)

Country Link
US (1) US5412690A (zh)
KR (1) KR0149893B1 (zh)
CA (1) CA2117797C (zh)
SE (1) SE9403796L (zh)
TW (1) TW255077B (zh)
WO (1) WO1994021071A1 (zh)

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US5568142A (en) * 1994-10-20 1996-10-22 Massachusetts Institute Of Technology Hybrid filter bank analog/digital converter
KR100203318B1 (ko) * 1994-12-29 1999-06-15 모토로라, 인크 광대역 주파수 신호 디지타이저 및 방법
US5790549A (en) * 1996-02-29 1998-08-04 Ericsson Inc. Subtractive multicarrier CDMA access methods and systems
CN1118949C (zh) * 1997-11-07 2003-08-20 皇家菲利浦电子有限公司 无线通信设备
US6182031B1 (en) * 1998-09-15 2001-01-30 Intel Corp. Scalable audio coding system
US6177893B1 (en) 1998-09-15 2001-01-23 Scott R. Velazquez Parallel processing analog and digital converter
US6397051B1 (en) * 1998-12-21 2002-05-28 At&T Corporation Dual image-reject mixer receiver for multiple channel reception and processing
US6577670B1 (en) * 1999-08-20 2003-06-10 Intersil Americas Inc. Programmable filtering mechanism to allow bandwidth overlap between direct sequence spread spectrum communication device and frequency-hopping transmitter
US20020021745A1 (en) * 2000-04-07 2002-02-21 Negus Kevin J. Multi-channel-bandwidth frequency-hopping system
US7200377B2 (en) * 2001-06-06 2007-04-03 Visteon Corporation Method and system for multi-channel RF digitization with analog selectivity
US7035311B2 (en) * 2001-12-05 2006-04-25 Sicom Systems, Ltd. Apparatus and method for a digital, wideband, intercept and analysis processor for frequency hopping signals
US7957938B2 (en) * 2002-10-24 2011-06-07 Lecroy Corporation Method and apparatus for a high bandwidth oscilloscope utilizing multiple channel digital bandwidth interleaving
US7711510B2 (en) * 2002-10-24 2010-05-04 Lecroy Corporation Method of crossover region phase correction when summing signals in multiple frequency bands
US10659071B2 (en) 2002-10-24 2020-05-19 Teledyne Lecroy, Inc. High bandwidth oscilloscope
US7219037B2 (en) 2002-10-24 2007-05-15 Lecroy Corporation High bandwidth oscilloscope
JP3729171B2 (ja) * 2002-11-26 2005-12-21 松下電器産業株式会社 混合回路とこれを用いた高周波信号受信装置
US20040208239A1 (en) * 2003-04-21 2004-10-21 Lars Karlsson Method and apparatus for the intelligent and automatic gathering of sudden short duration communications signals
WO2005081416A1 (en) * 2004-02-19 2005-09-01 Texas Instruments Incorporated Scalable, cooperative, wireless networking for mobile connectivity
US7292830B1 (en) * 2004-03-31 2007-11-06 Nortel Networks Limited Receiver gain management
US7466767B2 (en) * 2004-09-13 2008-12-16 Glowlink Communications Technology, Inc. Signal processing system and method having increased bandwidth
CN101164245B (zh) * 2005-03-30 2011-08-10 Nxp股份有限公司 用于宽频带无线通信的信号接收器
US7720178B2 (en) * 2006-08-11 2010-05-18 Mediatek Inc. Method of direct RF digitization for multiple GNSS system bands and receiver using the same
RU2009145693A (ru) * 2007-05-10 2011-06-20 Астриум Лимитед (Gb) Система обработки сигналов
DE102007044469A1 (de) † 2007-09-18 2009-04-09 Innovationszentrum für Telekommunikationstechnik GmbH IZT Vorrichtung und Verfahren zum Empfangen eines Informationssignals mit einem Informationssignalspektrum
JP5049305B2 (ja) * 2008-03-10 2012-10-17 アンリツ株式会社 周波数変換装置
FR2934098B1 (fr) * 2008-07-16 2011-12-02 Groupe Des Ecoles De Telecommunications Get Ecole Nationale Superieure Des Telecommunications Enst Dispositif et procede de traitement du signal utilisant plus plusieurs voies de traitement en parallele.
JP4996644B2 (ja) * 2009-03-30 2012-08-08 アンリツ株式会社 周波数変換装置
US8463224B2 (en) 2011-10-12 2013-06-11 Tektronix, Inc. Arbitrary multiband overlay mixer apparatus and method for bandwidth multiplication
US9729937B2 (en) * 2013-08-06 2017-08-08 Arris Enterprises Llc CATV digital transmission with BandPass sampling
US10432434B2 (en) 2016-07-20 2019-10-01 Tektronix, Inc. Multi-band noise reduction systems and methods

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048443A (en) * 1975-12-12 1977-09-13 Bell Telephone Laboratories, Incorporated Digital speech communication system for minimizing quantizing noise
US4112374A (en) * 1976-09-23 1978-09-05 Steinbrecher Corporation Doubly balanced mixer with optimized dynamic range
WO1986003873A1 (en) * 1984-12-20 1986-07-03 Gte Laboratories Incorporated Method and apparatus for encoding speech
US4675863A (en) * 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
US4817182A (en) * 1987-05-04 1989-03-28 General Electric Company Truncated subband coding of images
GB2210743A (en) * 1987-10-05 1989-06-14 Philips Nv Frequency difference detector (fdd) having automatic gain control and a carrier modulated receiver including the fdd
US5021801A (en) * 1989-09-05 1991-06-04 Motorola, Inc. Antenna switching system
US5179730A (en) * 1990-03-23 1993-01-12 Rockwell International Corporation Selectivity system for a direct conversion receiver
KR930006739B1 (ko) * 1990-08-30 1993-07-23 주식회사 금성사 서브밴드 코딩방법 및 엔코딩/디코딩장치
US5115309A (en) * 1990-09-10 1992-05-19 At&T Bell Laboratories Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders
US5280636A (en) * 1991-06-13 1994-01-18 Hughes Aircraft Company Multi-band digital receiving apparatus and method with bandwidth reduction

Also Published As

Publication number Publication date
WO1994021071A1 (en) 1994-09-15
KR0149893B1 (ko) 1999-05-15
US5412690A (en) 1995-05-02
SE9403796L (sv) 1994-12-23
CA2117797A1 (en) 1994-09-15
CA2117797C (en) 1999-08-24
SE9403796D0 (sv) 1994-11-07
KR950701483A (ko) 1995-03-23

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Legal Events

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MK4A Expiration of patent term of an invention patent