IT1261782B - Procedimento ed apparecchio di sfalsamento di frequenza per l'uso in ricetrasmettitori - Google Patents

Procedimento ed apparecchio di sfalsamento di frequenza per l'uso in ricetrasmettitori

Info

Publication number
IT1261782B
IT1261782B ITRM930210A ITRM930210A IT1261782B IT 1261782 B IT1261782 B IT 1261782B IT RM930210 A ITRM930210 A IT RM930210A IT RM930210 A ITRM930210 A IT RM930210A IT 1261782 B IT1261782 B IT 1261782B
Authority
IT
Italy
Prior art keywords
transceivers
frequency processing
offset apparatus
offset
frequency
Prior art date
Application number
ITRM930210A
Other languages
English (en)
Inventor
Randall R Hillock
John S Ruppel
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
Publication of ITRM930210A0 publication Critical patent/ITRM930210A0/it
Publication of ITRM930210A1 publication Critical patent/ITRM930210A1/it
Application granted granted Critical
Publication of IT1261782B publication Critical patent/IT1261782B/it

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
    • H04B1/38—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
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • 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
    • H04B1/50—Circuits using different frequencies for the two directions of communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Mobile Radio Communication Systems (AREA)
ITRM930210A 1992-04-14 1993-04-05 Procedimento ed apparecchio di sfalsamento di frequenza per l'uso in ricetrasmettitori IT1261782B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86959292A 1992-04-14 1992-04-14

Publications (3)

Publication Number Publication Date
ITRM930210A0 ITRM930210A0 (it) 1993-04-05
ITRM930210A1 ITRM930210A1 (it) 1994-10-05
IT1261782B true IT1261782B (it) 1996-06-03

Family

ID=25353873

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930210A IT1261782B (it) 1992-04-14 1993-04-05 Procedimento ed apparecchio di sfalsamento di frequenza per l'uso in ricetrasmettitori

Country Status (8)

Country Link
US (1) US5715520A (it)
JP (1) JPH05300048A (it)
CN (1) CN1028704C (it)
CA (1) CA2109923C (it)
FR (1) FR2690025B1 (it)
IT (1) IT1261782B (it)
MX (1) MX9302156A (it)
WO (1) WO1993021693A1 (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1022852A (ja) * 1996-07-02 1998-01-23 Nec Corp 無線通信装置
US6112059A (en) * 1997-11-12 2000-08-29 Motorola, Inc. Off-channel leakage power monitor apparatus and method
US6516184B1 (en) * 1999-08-31 2003-02-04 Skyworks Solutions, Inc. Multi-band transceiver having multi-slot capability
JP3961422B2 (ja) * 2000-10-26 2007-08-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 直接変換無線トランシーバ
US7466962B2 (en) * 2005-06-14 2008-12-16 Motorola, Inc Methods and apparatus of providing a radio frequency local oscillator signal for a transceiver
US9143085B2 (en) 2012-03-01 2015-09-22 Qualcomm Incorporated Frequency synthesizer architecture in a time-division duplex mode for a wireless device

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944925A (en) * 1974-08-05 1976-03-16 Motorola, Inc. Phase-locked loop transceiver having automatic frequency offset selectability
JPS524105A (en) * 1975-06-27 1977-01-13 Trio Kenwood Corp Frequency synthesizer-method transmitter-receiver
US4194151A (en) * 1978-06-29 1980-03-18 General Electric Company Multifrequency generator
US4558453A (en) * 1981-12-16 1985-12-10 Harris Corporation Synchronization method and frequency hopping communication system
US4476575A (en) * 1982-12-13 1984-10-09 General Electric Company Radio transceiver
JPS62274934A (ja) * 1986-05-23 1987-11-28 Nec Corp 送受信装置
GB8806194D0 (en) * 1988-03-16 1988-04-13 Shaye Communications Ltd Transceivers
JP2850160B2 (ja) * 1991-01-25 1999-01-27 松下電器産業株式会社 時分割複信無線送受信装置
DE69225259T2 (de) * 1991-02-22 1998-08-20 Sony Corp Zeitduplex-Sender-Empfänger
JP2800858B2 (ja) * 1991-09-18 1998-09-21 日本電気株式会社 無線電話装置
JPH06152467A (ja) * 1992-11-06 1994-05-31 Nec Corp 無線通信機
EP0688446A1 (en) * 1993-03-10 1995-12-27 National Semiconductor Corporation Radio frequency telecommunications transceiver
US5465409A (en) * 1994-03-07 1995-11-07 Motorola, Inc. Radio architecture with dual frequency source selection
US5475677A (en) * 1994-12-29 1995-12-12 Bell Communications Research Inc. Compatible licensed and unlicensed band portable handset unit for TDMA wireless communications system

Also Published As

Publication number Publication date
ITRM930210A0 (it) 1993-04-05
JPH05300048A (ja) 1993-11-12
US5715520A (en) 1998-02-03
FR2690025A1 (fr) 1993-10-15
WO1993021693A1 (en) 1993-10-28
MX9302156A (es) 1993-10-29
FR2690025B1 (fr) 1997-08-08
ITRM930210A1 (it) 1994-10-05
CA2109923A1 (en) 1993-10-28
CN1077579A (zh) 1993-10-20
CN1028704C (zh) 1995-05-31
CA2109923C (en) 1999-01-26

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960430