A 5GHz-band SiGe-MMIC quadrature modulator using a circular polyphase filter for 1Gbps transmission

Kensuke Nakajima, Noriharu Suematsu, Keishi Murakami, Tadashi Takagi, Hiroyuki Nakase, Yoji Isota, Kazuo Tsubouchi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

A 5GHz-band SiGe-MMIC direct conversion quadrature modulator using a circular polyphase filter for high data rate is described. High I/Q vector accuracy is achieved using a circular polyphase filter with a completely symmetric layout as a 90 degrees LO power divider. By combining high cut-off frequency baseband amplifiers and broad-band unit mixers, a fabricated quadrature modulator shows the EVM of 3.3 %rms at 5.5 GHz using 64-QAM OFDM signals with the channel bandwidth of 204 MHz, which corresponds to the data rate of 1.161 Gbps.

Original languageEnglish
Title of host publication35th European Microwave Conference 2005 - Conference Proceedings
Pages979-982
Number of pages4
DOIs
Publication statusPublished - 2005
Event2005 European Microwave Conference - Paris, France
Duration: 2005 Oct 42005 Oct 6

Publication series

Name35th European Microwave Conference 2005 - Conference Proceedings
Volume2

Conference

Conference2005 European Microwave Conference
Country/TerritoryFrance
CityParis
Period05/10/405/10/6

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