BR9807287A - rádio. - Google Patents

rádio.

Info

Publication number
BR9807287A
BR9807287A BR9807287A BR9807287A BR9807287A BR 9807287 A BR9807287 A BR 9807287A BR 9807287 A BR9807287 A BR 9807287A BR 9807287 A BR9807287 A BR 9807287A BR 9807287 A BR9807287 A BR 9807287A
Authority
BR
Brazil
Prior art keywords
radio
frequency range
signals
baseband
channel spacing
Prior art date
Application number
BR9807287A
Other languages
English (en)
Inventor
Martin Isberg
Bjorn Lindguist
Torsten Carlsson
Hans Hagberg
Peter Jakobsson
Lars Peter Kunkel
Kjell Gustafsson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9807287A publication Critical patent/BR9807287A/pt

Links

Classifications

    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne receivers
    • 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
    • H04B1/0053—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 with common antenna for more than one band
    • H04B1/0057—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 with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
    • 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
    • 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
    • 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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/406—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with more than one transmission mode, e.g. analog and digital modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Transceivers (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Selective Calling Equipment (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

DE RáDIO"<D> A presente invenção refere-se a um d) adaptado para receber sinais de rádio em duas bandas de frequência (FB1, FB2). Os sinais de rádio em uma das bandas de frequência (FB1) constituem sinais de comunicação para um sistema de rádio (AMPS, NMT) possuindo um determinado espaçamento de canal, ao passo que os sinais de rádio da segunda banda de frequência (FB2) constituem sinais de comunicação para um segundo sistema de rádio(PCS 1900, DCS 1800, GSM) possuindo um segundo determinado espaçamento de canal. O receptor (104) compreende duas entradas (108, 11) individualmente destinadas para um sistema de rádio possuindo diferentes bandas de frequência e espaçamentos de canal. Para sinais de rádio que ocorrem em uma entrada (108), a mia faixa de frequência de banda de base. Para sinaimistura da faixa de frequência de rádio para a faixa de frequência de banda de base é realizada através de uma faixa de frequência intermediária. Adicionalmente, o receptor (104) compreende uma saída da de base para ambos os sistemas de rádio. A saída (112) é ligada a uma unidade de banda de base que é comum aos sistemas de rádio. Na unidade de banda de base, entre outros, são realizados filtragem de passagem de banda baixa, detecção e supressão de canal vizinho no sinal de rádio recebido que foi misturado de forma descendente para a faixa de frequência de banda de base.
BR9807287A 1997-01-21 1998-01-13 rádio. BR9807287A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9700169A SE508290C2 (sv) 1997-01-21 1997-01-21 Mottagaranordning för två frekvensband
PCT/SE1998/000034 WO1998032235A2 (en) 1997-01-21 1998-01-13 Receiver apparatus for two frequency bands

Publications (1)

Publication Number Publication Date
BR9807287A true BR9807287A (pt) 2000-03-21

Family

ID=20405483

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9807287A BR9807287A (pt) 1997-01-21 1998-01-13 rádio.

Country Status (16)

Country Link
US (1) US6091963A (pt)
EP (1) EP0963626B1 (pt)
JP (1) JP3934162B2 (pt)
KR (1) KR20000070294A (pt)
CN (1) CN1115789C (pt)
AR (1) AR011555A1 (pt)
AU (1) AU729765B2 (pt)
BR (1) BR9807287A (pt)
CO (1) CO4771170A1 (pt)
DE (1) DE69833184T2 (pt)
EE (1) EE03502B1 (pt)
HK (1) HK1025692A1 (pt)
MY (1) MY118134A (pt)
SE (1) SE508290C2 (pt)
TR (1) TR199901698T2 (pt)
WO (1) WO1998032235A2 (pt)

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KR100693190B1 (ko) * 1998-12-08 2007-03-13 코닌클리케 필립스 일렉트로닉스 엔.브이. 동조가능한 수신기와 그 제어방법 및 이동 전화 시스템의 작동방법
KR100652001B1 (ko) * 1999-09-08 2006-11-30 엘지전자 주식회사 이동 단말기의 대역 필터 및 그 제어 방법
US6606485B1 (en) * 1999-10-06 2003-08-12 Qualcomm, Incorporated Candidate system search and soft handoff between frequencies in a multi-carrier mobile communication system
US6574459B1 (en) * 2000-04-14 2003-06-03 Lucent Technologies Inc. Multiple branch receiver system and method
GB0009167D0 (en) * 2000-04-14 2000-05-31 Univ Strathclyde Wireless networks
KR100340684B1 (ko) * 2000-06-14 2002-06-20 윤광석 서비스 채널 간격만큼 이격된 멀티신호를 생성하기 위한장치 및 그 방법
DE50115413D1 (de) * 2000-08-01 2010-05-12 Siemens Ag Tdma-sende-/empfangseinheit
US6968019B2 (en) * 2000-11-27 2005-11-22 Broadcom Corporation IF FSK receiver
EP1380108A2 (en) * 2001-04-17 2004-01-14 Telefonaktiebolaget LM Ericsson (publ) Methods and apparatus for tuning pre-selection filters in radio receivers
KR20030002452A (ko) * 2001-06-29 2003-01-09 엘지전자 주식회사 이동통신 단말기의 3 밴드 수신주파수 회로
US7646782B1 (en) * 2001-07-30 2010-01-12 Primrose Donald R Data link/physical layer packet buffering and flushing
AU2003211759A1 (en) * 2002-03-26 2003-10-08 Toyota Infotechnology Center Co., Ltd. Radio communication device, radio communication system, radio communication method, and vehicle
EP1349289A1 (en) * 2002-03-27 2003-10-01 Agilent Technologies, Inc. (a Delaware corporation) Low cost S-UMTS extension to a T-UMTS terminal
US7194044B2 (en) * 2002-05-22 2007-03-20 Alexander Neil Birkett Up/down conversion circuitry for radio transceiver
JP4354681B2 (ja) 2002-09-13 2009-10-28 株式会社日立製作所 通信用半導体集積回路
US7203488B2 (en) * 2002-11-08 2007-04-10 Louis Luneau Flexible software radio transceiver
US20060276239A1 (en) * 2005-06-02 2006-12-07 Lam Man L Direct conversion radio station operable pursuant to a coded squelch scheme and associated method
EP1855395A1 (de) * 2006-05-08 2007-11-14 Siemens Aktiengesellschaft Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106734B (en) * 1981-09-15 1986-01-15 Standard Telephones Cables Ltd Radio receiver
CA1218115A (en) * 1983-07-25 1987-02-17 Sony Corporation Space diversity receiver
US5280636A (en) * 1991-06-13 1994-01-18 Hughes Aircraft Company Multi-band digital receiving apparatus and method with bandwidth reduction
US5504803A (en) * 1991-11-25 1996-04-02 Matsushita Electric Industrial Co., Ltd. Method for automatic mode selection for a dual-mode telephone handset for use in a cellular mobile telephone system and in a wireless telephone system
DE4396900C2 (de) * 1992-12-22 1999-11-04 Motorola Inc HF-Antennenschalter insbes. zum Umschalten zwischen einer ersten und zweiten Antenne
FR2707063B1 (pt) * 1993-06-25 1995-09-22 Alcatel Mobile Comm France
FI941862A (fi) * 1994-04-21 1995-10-22 Nokia Mobile Phones Ltd Menetelmä ja radiotaajuusjärjestelmä kahden eri taajuusalueella toimivan radioviestinjärjestelmän vastaanottimen ja lähettimen taajuuksien muodostamiseksi ja kahdella eri taajuusalueella toimiva vastaanotin ja lähetin sekä edellisten käyttö matkapuhelimessa
JP2586333B2 (ja) * 1994-05-13 1997-02-26 日本電気株式会社 無線通信装置
KR0129975B1 (ko) * 1994-06-09 1998-04-11 김광호 중간 주파수 자동 선택회로
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Also Published As

Publication number Publication date
TR199901698T2 (xx) 1999-09-21
AU729765B2 (en) 2001-02-08
US6091963A (en) 2000-07-18
AR011555A1 (es) 2000-08-30
CO4771170A1 (es) 1999-04-30
DE69833184D1 (de) 2006-04-06
EE03502B1 (et) 2001-08-15
SE9700169D0 (sv) 1997-01-21
JP2001509994A (ja) 2001-07-24
DE69833184T2 (de) 2006-07-20
SE508290C2 (sv) 1998-09-21
JP3934162B2 (ja) 2007-06-20
SE9700169L (sv) 1998-07-22
CN1244316A (zh) 2000-02-09
KR20000070294A (ko) 2000-11-25
WO1998032235A2 (en) 1998-07-23
CN1115789C (zh) 2003-07-23
EP0963626A2 (en) 1999-12-15
EE9900323A (et) 2000-02-15
HK1025692A1 (en) 2000-11-17
MY118134A (en) 2004-09-30
AU5785598A (en) 1998-08-07
EP0963626B1 (en) 2006-01-11
WO1998032235A3 (en) 1998-09-11

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 9A E 10A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1971 DE 14/10/2008.