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3 - CMOS and BiCMOS Technologies

Published online by Cambridge University Press:  20 May 2022

By
Philippe Ferrari ,
Sylvain Bourdel ,
Alfredo Bautista  and
Thomas Quémerais
Edited by
Philippe Ferrari ,
Rolf Jakoby ,
Onur Hamza Karabey ,
Gustavo P. Rehder  and
Holger Maune
Philippe Ferrari
Affiliation:
Université de Grenoble
Rolf Jakoby
Affiliation:
Technische Universität, Darmstadt, Germany
Onur Hamza Karabey
Affiliation:
ALCAN Systems GmbH, Germany
Gustavo P. Rehder
Affiliation:
Escola Politécnica da Universidade de São Paulo
Holger Maune
Affiliation:
Technische Universität, Darmstadt, Germany
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Summary

This chapter describes tunable circuits in CMOS and BiCMOS technologies. First, active and passive basic components are briefly described: MOS and bipolar transistors, and passive components like MOM capacitors, and transmission lines. Slow-wave transmission lines are described and compared to their microstrip lines counterparts, in terms of electrical performance and footprint. Next, tunable components are introduced,varactors and switches, anddigital tunable capacitors. Then, tunable transmission lines are described. Some examples of tunable inductances are also highlighted. Finally, two families of tunable circuits are addressed, phase shifter and VCOs, respectively. Both circuits are used in many systems for beam-forming/steering concerning phase shifters, and transceivers concerning VCOs, respectively. Many design examples are given. Topologies based on the use of lumped components (varactors and inductances) are compared to those based on distributed components (tunable transmission lines). In the middle, hybrid approaches mixing lumped and distributed components can lead to very efficient solutions, both in terms of electrical performance and footprint.

Keywords

CMOSBiCMOSDesign kitsBasic componentsTransmission linescapacitorsTunable componentsVaractorsswitchestunable transmission linesphase shiftersVCOsimpedance tuner
Type
Chapter
Information
Reconfigurable Circuits and Technologies for Smart Millimeter-Wave Systems , pp. 108 - 200
Publisher: Cambridge University Press
Print publication year: 2022

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