0.8-5.2GHz band SiGe-MMIC Q-MOD for multi-band multi-mode direct convertion transmitters

Noriharu Suematsu, Chiemi Kageyama, Kensuke Nakajima, Kouji Tsutsumi, Eiji Taniguchi, Keishi Murakami

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


In order to realize multi-band multi-mode transmitters for the 4 th generation mobile communication systems based on software define radio (SDR) technology, 0.8-5.2GHz broad-band direct conversion quadrature modulator (Q-MOD) has been fabricated in 0.35μm SiGeBiCMOS process. The circuit combination of a static frequency divider and a poly phase filter (PPF) enables higher 90degree phase accuracy than that of the static frequency divider alone. By employing this 90 degree power divider, the fabricated Q-MOD achieves EVM of 4.0/3.1%rms at 0.8/2.1GHz W-CDMA transmission and 2.5%rms at 5.2GHz Wireless-LAN (IEEE 802.11a) transmission.

Original languageEnglish
Title of host publicationAPMC 2005
Subtitle of host publicationAsia-Pacific Microwave Conference Proceedings 2005
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)078039433X, 9780780394339
Publication statusPublished - 2005 Jan 1
Externally publishedYes
EventAPMC 2005: Asia-Pacific Microwave Conference 2005 - Suzhou, China
Duration: 2005 Dec 42005 Dec 7

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


OtherAPMC 2005: Asia-Pacific Microwave Conference 2005

ASJC Scopus subject areas

  • Engineering(all)


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