TW200501613A - Harmonic suppression for a multi-band transmitter - Google Patents

Harmonic suppression for a multi-band transmitter

Info

Publication number
TW200501613A
TW200501613A TW092135724A TW92135724A TW200501613A TW 200501613 A TW200501613 A TW 200501613A TW 092135724 A TW092135724 A TW 092135724A TW 92135724 A TW92135724 A TW 92135724A TW 200501613 A TW200501613 A TW 200501613A
Authority
TW
Taiwan
Prior art keywords
transmit
amplifier path
transmit amplifier
band transmitter
harmonic suppression
Prior art date
Application number
TW092135724A
Other languages
Chinese (zh)
Inventor
Richard L Abrahams
R Douglas Schultz
Adam K Harriman
Iv W Joseph Vitek
Original Assignee
Globespan Virata 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 US10/735,012 external-priority patent/US20040127185A1/en
Application filed by Globespan Virata Inc filed Critical Globespan Virata Inc
Publication of TW200501613A publication Critical patent/TW200501613A/en

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
    • H04B1/006—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 switches for selecting the desired band
    • 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

Abstract

A multiple band transmitter including first and second transmit amplifier paths, where the first transmit amplifier path conducts a first transmit signal at a first frequency band and the second transmit amplifier path conducts a second transmit signal at a second frequency band. The second transmit amplifier path includes an amplifier that generates the second transmit signal along with a harmonic frequency within a passband of the first transmit amplifier path. The second transmit amplifier path further includes a trap circuit that shunts the harmonic frequency away from the first transmit amplifier path.
TW092135724A 2002-12-20 2003-12-17 Harmonic suppression for a multi-band transmitter TW200501613A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US43601602P 2002-12-20 2002-12-20
US43882903P 2003-01-09 2003-01-09
US10/735,012 US20040127185A1 (en) 2002-12-23 2003-12-12 Harmonic suppression for a multi-band transmitter

Publications (1)

Publication Number Publication Date
TW200501613A true TW200501613A (en) 2005-01-01

Family

ID=32686088

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092135724A TW200501613A (en) 2002-12-20 2003-12-17 Harmonic suppression for a multi-band transmitter

Country Status (3)

Country Link
AU (1) AU2003301164A1 (en)
TW (1) TW200501613A (en)
WO (1) WO2004059857A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5095285A (en) * 1990-08-31 1992-03-10 Texas Instruments Incorporated Monolithically realizable harmonic trapping circuit
GB9126616D0 (en) * 1991-12-16 1992-02-12 Texas Instruments Ltd Improvements in or relating to amplifiers
US5592122A (en) * 1994-05-19 1997-01-07 Matsushita Electric Industrial Co., Ltd. Radio-frequency power amplifier with input impedance matching circuit based on harmonic wave
US6298244B1 (en) * 1997-07-03 2001-10-02 Ericsson Inc. Dual-band, dual-mode power amplifier
US5969582A (en) * 1997-07-03 1999-10-19 Ericsson Inc. Impedance matching circuit for power amplifier
US5973568A (en) * 1998-06-01 1999-10-26 Motorola Inc. Power amplifier output module for dual-mode digital systems
WO2000003478A1 (en) * 1998-07-08 2000-01-20 Hitachi, Ltd. High-frequency power amplifier module
US6236274B1 (en) * 2000-01-04 2001-05-22 Industrial Technology Research Institute Second harmonic terminations for high efficiency radio frequency dual-band power amplifier

Also Published As

Publication number Publication date
WO2004059857A1 (en) 2004-07-15
AU2003301164A1 (en) 2004-07-22

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TW200501613A (en) Harmonic suppression for a multi-band transmitter