Presentation 2008-01-25
A Low Spurious SiGe-MMIC Direct Conversion Transceiver for Cognitive Radio Using 2f_ LO Switching Configuration
Koji TSUTSUMI, SHINJO Shintaro /, Jun KOIDE, Mikio UESUGI, Noriharu SUEMATSU, Hiroshi HARADA,
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Abstract(in English) An RF-IC for multi-mode cognitive wireless system is required multi-band/multi-mode characteristics. One of the difficult issues for multi-band/multi-mode RF-IC is to lower the Tx spurious. In this paper, 2f_ LO switching configuration is proposed for low Tx spurious characteristics. Theoretically, this configuration doubles offset frequency of adjacent Tx spurious in FDD mode, compared to the conventional configuration. The direct conversion transceiver MMIC using 2f_ LO switching configuration is fabricated in 0.18μm SiGe-BiCMOS process. Measured results show a high accurate modulation characteristics over 400M-6GHz, and low Tx spurious characteristics in FDD mode.
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Keyword(in English) Cognitive Radio / SiGe-MMIC / Direct conversion / TRX MMIC / isolation / FDD / TDD
Paper # SR2007-84
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Committee SR
Conference Date 2008/1/17(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Low Spurious SiGe-MMIC Direct Conversion Transceiver for Cognitive Radio Using 2f_ LO Switching Configuration
Sub Title (in English)
Keyword(1) Cognitive Radio
Keyword(2) SiGe-MMIC
Keyword(3) Direct conversion
Keyword(4) TRX MMIC
Keyword(5) isolation
Keyword(6) FDD
Keyword(7) TDD
1st Author's Name Koji TSUTSUMI
1st Author's Affiliation Mitsubishi Electric Corp.()
2nd Author's Name SHINJO Shintaro /
2nd Author's Affiliation / Mitsubishi Electric Corp.
3rd Author's Name Jun KOIDE
3rd Author's Affiliation Mitsubishi Electric Corp.
4th Author's Name Mikio UESUGI
4th Author's Affiliation Mitsubishi Electric Corp.
5th Author's Name Noriharu SUEMATSU
5th Author's Affiliation Mitsubishi Electric Corp.
6th Author's Name Hiroshi HARADA
6th Author's Affiliation National Institute of Information and Communications Technology (NICT)
Date 2008-01-25
Paper # SR2007-84
Volume (vol) vol.107
Number (no) 452
Page pp.pp.-
#Pages 6
Date of Issue