GB2325362B - Dual conversion radio frequency transceiver - Google Patents

Dual conversion radio frequency transceiver

Info

Publication number
GB2325362B
GB2325362B GB9709797A GB9709797A GB2325362B GB 2325362 B GB2325362 B GB 2325362B GB 9709797 A GB9709797 A GB 9709797A GB 9709797 A GB9709797 A GB 9709797A GB 2325362 B GB2325362 B GB 2325362B
Authority
GB
United Kingdom
Prior art keywords
radio frequency
frequency transceiver
dual conversion
conversion radio
dual
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
GB9709797A
Other versions
GB9709797D0 (en
GB2325362A (en
Inventor
Yu-Hong Hsueh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BenQ Corp
Original Assignee
Acer Peripherals 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
Priority claimed from TW86102065A external-priority patent/TW417363B/en
Priority to DE19719658A priority Critical patent/DE19719658C2/en
Application filed by Acer Peripherals Inc filed Critical Acer Peripherals Inc
Priority to GB9709797A priority patent/GB2325362B/en
Publication of GB9709797D0 publication Critical patent/GB9709797D0/en
Publication of GB2325362A publication Critical patent/GB2325362A/en
Application granted granted Critical
Publication of GB2325362B publication Critical patent/GB2325362B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/408—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency the transmitter oscillator frequency being identical to the receiver local oscillator frequency
    • 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
    • H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
GB9709797A 1997-02-21 1997-05-14 Dual conversion radio frequency transceiver Expired - Fee Related GB2325362B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19719658A DE19719658C2 (en) 1997-02-21 1997-05-09 RF superimposed transceiver
GB9709797A GB2325362B (en) 1997-02-21 1997-05-14 Dual conversion radio frequency transceiver

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW86102065A TW417363B (en) 1997-02-21 1997-02-21 Dual-conversion RF transmitting/receiving system
GB9709797A GB2325362B (en) 1997-02-21 1997-05-14 Dual conversion radio frequency transceiver

Publications (3)

Publication Number Publication Date
GB9709797D0 GB9709797D0 (en) 1997-07-09
GB2325362A GB2325362A (en) 1998-11-18
GB2325362B true GB2325362B (en) 1999-07-21

Family

ID=26311534

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9709797A Expired - Fee Related GB2325362B (en) 1997-02-21 1997-05-14 Dual conversion radio frequency transceiver

Country Status (2)

Country Link
DE (1) DE19719658C2 (en)
GB (1) GB2325362B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19907823C1 (en) * 1999-02-24 2001-01-18 E Lead Electronic Co Two-way radio communication device, e.g. personal transceiver, has speech recognition stage providing voice operated switching from receive to transmit
DE19918059C1 (en) * 1999-04-21 2000-11-30 Siemens Ag Transceiver with bidirectional internal interface lines
DE19934652C2 (en) 1999-07-23 2003-01-30 Motorola Inc communication device
DE10152902A1 (en) * 2001-10-26 2003-02-20 Siemens Ag Transmitter/receiver has reception path stage for converting high frequency input signal to baseband, transmission path stage for converting baseband signal to high frequency output signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186344A (en) * 1976-12-27 1980-01-29 Oki Electric Industry Co., Ltd. Frequency converter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1023434A (en) * 1973-03-02 1977-12-27 Salvatore Amoroso (Jr.) Single oscillator microwave transceiver
DE3518896A1 (en) * 1985-05-25 1986-11-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Partially digitised radio device
DE3631068A1 (en) * 1986-09-12 1988-03-24 Hagenuk Telecom Gmbh Cordless telephone system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4186344A (en) * 1976-12-27 1980-01-29 Oki Electric Industry Co., Ltd. Frequency converter

Also Published As

Publication number Publication date
DE19719658A1 (en) 1998-09-03
GB9709797D0 (en) 1997-07-09
GB2325362A (en) 1998-11-18
DE19719658C2 (en) 2001-02-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060514