ASK and Pi/4-QPSK dual mode SiGe-MMIC transceiver for 5.8GHz DSRC terminals having stabilized amplifier chain

Shintaro Shinjo, Koji Tsutsumi, Kazutomi Mori, Hiroshi Okada, Masahiro Inoue, Noriharu Suematsu

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

5 Citations (Scopus)

Abstract

A high integrated SiGe-MMIC transceiver having voltage controlled oscillator (VCO), phase locked loop (PLL), dual-transmit block for amplitude shift keying (ASK) mode and pi/4-quadrature phase shift keying (QPSK) mode, and common receiver block for the dual modes is developed for 5.8GHz dedicated short range communications (DSRC) terminals. To obtain stability of transceiver using differential configuration, which has on-chip closed loops generated by common ground/ Fee pad arrangement and differential pairs, the stabilized MMIC design method based on the loop analysis is introduced to it. In the loop analysis, the both on-chip loops of differential mode and common mode are considered, the maximum loop gain of less than -3dB all over the frequency range is defined as the absolute stabilized condition. The simulated results for each loops show that isolation resistors Inserted in bias feed line are effective for improving the stability. The effectiveness of the design method is evaluated by the measured results. The SiGe-MMIC transceiver having the stabilized amplifier chain is fabricated in 0.35μm SiGe-BiCMOS, and it achieves the adjacent channel power ratio (ACPR) of -38.2dBc under the ASK modulation and that of-47.2dBc under the pi/4-QPSK modulation.

Original languageEnglish
Title of host publication2008 IEEE MTT-S International Microwave Symposium Digest, MTT
Pages1071-1074
Number of pages4
DOIs
Publication statusPublished - 2008 Dec 12
Externally publishedYes
Event2008 IEEE MTT-S International Microwave Symposium Digest, MTT - Atlanta, GA, United States
Duration: 2008 Jun 152008 Jun 20

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
ISSN (Print)0149-645X

Other

Other2008 IEEE MTT-S International Microwave Symposium Digest, MTT
CountryUnited States
CityAtlanta, GA
Period08/6/1508/6/20

Keywords

  • Communication terminals
  • MMIC amplifiers
  • MMIC mixers
  • Modulation
  • Transceivers

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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