AR013957A1 - Un aparato de comunicacion por radio. - Google Patents

Un aparato de comunicacion por radio.

Info

Publication number
AR013957A1
AR013957A1 ARP980104539A ARP980104539A AR013957A1 AR 013957 A1 AR013957 A1 AR 013957A1 AR P980104539 A ARP980104539 A AR P980104539A AR P980104539 A ARP980104539 A AR P980104539A AR 013957 A1 AR013957 A1 AR 013957A1
Authority
AR
Argentina
Prior art keywords
radio communication
channels
communication unit
pll
spacing
Prior art date
Application number
ARP980104539A
Other languages
English (en)
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 AR013957A1 publication Critical patent/AR013957A1/es

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
    • H04B1/005—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
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • 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)
  • Transceivers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

Un aparato de comunicacion por radio (20) que comprende medios de comunicacion por radio (23, 25, 27) para establecer comunicaciones (recepciony/o transmision) en una o más bandas de frecuencias con espaciados entre canales afines. Los medios de comunicacion por radio usan senales de osciladorpara la seleccion de canales en las bandas de frecuencias. Además, la unidad de comunicacion por radio comprende un reloj del sistema (77) que genera una senaldel reloj que tiene una frecuencia predeterminada que no es divisible por todas los espaciados entre canales. En conformidad con la invencion, las senales deloscilador usadas en la seleccion de canales se generan por un circuito sintetizador de frecuencias (29) en la forma de un circuito fraccional-N PLL,donde dicha senal del reloj es alimentada como una senal de frecunecia de referencia al circuito fraccional-N PLL. La invencion comprende además unradioteléfono que comprende dicha unidad de comunicacion por radio y el uso de una unidad de comunicacion por radio de ese tipo.
ARP980104539A 1997-09-11 1998-09-11 Un aparato de comunicacion por radio. AR013957A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9703294A SE510523C2 (sv) 1997-09-11 1997-09-11 Radiokommunikationsenhet och radiotelefon innefattande radiokommunikationsenhet

Publications (1)

Publication Number Publication Date
AR013957A1 true AR013957A1 (es) 2001-01-31

Family

ID=20408226

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980104539A AR013957A1 (es) 1997-09-11 1998-09-11 Un aparato de comunicacion por radio.

Country Status (12)

Country Link
US (1) US6370360B1 (es)
CN (1) CN1126282C (es)
AR (1) AR013957A1 (es)
AU (1) AU8469798A (es)
BR (1) BR9812196A (es)
CO (1) CO4810275A1 (es)
EE (1) EE03642B1 (es)
GB (1) GB2344949B (es)
HK (1) HK1031958A1 (es)
MY (1) MY120762A (es)
SE (1) SE510523C2 (es)
WO (1) WO1999013594A1 (es)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE510523C2 (sv) 1997-09-11 1999-05-31 Ericsson Telefon Ab L M Radiokommunikationsenhet och radiotelefon innefattande radiokommunikationsenhet
US6614837B1 (en) * 1998-09-25 2003-09-02 Skyworks Solutions, Inc. Device system and method for low noise radio frequency transmission
GB2350948B (en) * 1999-06-04 2003-10-01 Mitel Semiconductor Ltd Frequency changer and digital tuner
FR2796792B1 (fr) * 1999-07-22 2001-10-12 Cit Alcatel Dispositif d'emission radioelectrique
EP1148654A1 (de) * 2000-04-18 2001-10-24 Infineon Technologies AG Sende- und Empfangseinheit
US8693959B1 (en) * 2000-07-21 2014-04-08 Intel Corporation System and apparatus for a direct conversion receiver and transmitter
US6888580B2 (en) * 2001-02-27 2005-05-03 Ati Technologies Inc. Integrated single and dual television tuner having improved fine tuning
KR100390512B1 (ko) * 2001-06-22 2003-07-04 엘지전자 주식회사 이동통신 단말기의 셀프 콰이어팅 제거장치
DE10131676A1 (de) * 2001-06-29 2003-01-16 Infineon Technologies Ag Empfängeranordnung mit Wechselstrom-Kopplung
EP1313220A1 (en) * 2001-11-19 2003-05-21 Motorola, Inc. Apparatus for generating multiple clock signals of different frequency characteristics
US20040116394A1 (en) * 2002-12-13 2004-06-17 Dabur Research Foundation Method for treating cancer using betulinic acid rich herbal extract
US7035614B2 (en) 2002-12-13 2006-04-25 Microtune (Texas), L.P. System and method for discovering frequency related spurs in a multi-conversion tuner
JP2004235910A (ja) * 2003-01-30 2004-08-19 Nec Corp チャネル決定方法及びにそれに用いる無線局並びに端末装置
US7245882B1 (en) * 2003-07-17 2007-07-17 Atheros Communications, Inc. Method and apparatus for a signal selective RF transceiver system
JP2005278098A (ja) * 2004-03-26 2005-10-06 Alps Electric Co Ltd テレビジョン信号送信機
US20080146184A1 (en) * 2006-12-19 2008-06-19 Microtune (Texas), L.P. Suppression of lo-related interference from tuners
JP5339150B2 (ja) * 2009-09-30 2013-11-13 ソニー株式会社 無線通信装置
US8598925B1 (en) 2012-07-16 2013-12-03 Nanowave Technologies Inc. Frequency determination circuit and method
CN103647568B (zh) * 2013-12-20 2016-02-10 四川大学 一种外场数据数字接收机、外场数据检测系统及方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2091960B (en) 1981-01-27 1985-06-19 Int Standard Electric Corp High speed frequency synthesizer
US4969210A (en) * 1988-02-10 1990-11-06 Motorola, Inc. Two-way radio having a PLL
US5065408A (en) * 1990-04-26 1991-11-12 Motorola, Inc. Fractional-division synthesizer for a voice/data communications systems
US5055800A (en) 1990-04-30 1991-10-08 Motorola, Inc. Fractional n/m synthesis
US5021754A (en) * 1990-07-16 1991-06-04 Motorola, Inc. Fractional-N synthesizer having modulation spur compensation
US5111162A (en) 1991-05-03 1992-05-05 Motorola, Inc. Digital frequency synthesizer having AFC and modulation applied to frequency divider
US5493700A (en) * 1993-10-29 1996-02-20 Motorola Automatic frequency control apparatus
US5448763A (en) * 1993-11-09 1995-09-05 Motorola Apparatus and method for operating a phase locked loop frequency synthesizer responsive to radio frequency channel spacing
US5535432A (en) * 1994-09-14 1996-07-09 Ericsson Ge Mobile Communications Inc. Dual-mode satellite/cellular phone with a frequency synthesizer
JP3327028B2 (ja) * 1995-02-14 2002-09-24 松下電器産業株式会社 周波数シンセサイザ
JP3070442B2 (ja) * 1995-05-24 2000-07-31 日本電気株式会社 ディジタル変復調回路
US5974305A (en) * 1997-05-15 1999-10-26 Nokia Mobile Phones Limited Dual band architectures for mobile stations
SE510523C2 (sv) 1997-09-11 1999-05-31 Ericsson Telefon Ab L M Radiokommunikationsenhet och radiotelefon innefattande radiokommunikationsenhet
US6308048B1 (en) * 1997-11-19 2001-10-23 Ericsson Inc. Simplified reference frequency distribution in a mobile phone

Also Published As

Publication number Publication date
CN1126282C (zh) 2003-10-29
EE03642B1 (et) 2002-02-15
GB2344949B (en) 2001-09-26
WO1999013594A1 (en) 1999-03-18
HK1031958A1 (en) 2001-06-29
GB2344949A (en) 2000-06-21
EE200000128A (et) 2001-02-15
CO4810275A1 (es) 1999-06-30
SE510523C2 (sv) 1999-05-31
SE9703294D0 (sv) 1997-09-11
CN1270715A (zh) 2000-10-18
US6370360B1 (en) 2002-04-09
BR9812196A (pt) 2001-12-18
AU8469798A (en) 1999-03-29
MY120762A (en) 2005-11-30
SE9703294L (sv) 1999-03-12
GB0006040D0 (en) 2000-05-03

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