Low group delay 3.1-10.6 GHz CMOS power amplifier for UWB applications

Rohana Sapawi, Ramesh Pokharel, Sohiful A.Z. Murad, Awinash Anand, Nishal Koirala, Haruichi Kanaya, K. Yoshida

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

This letter proposes the design of a low group delay ultra-wideband (UWB) power amplifier (PA) in 0.18μm CMOS technology. The PA design employs a three-stage cascade common source topology that has a different design concept from other multi-stage topology to provide a broad bandwidth characteristic, gain flatness of 11.48 ± 0.6dB, and low group delay variation of ± 85.8 ps. A resistive shunt feedback technique is adopted at the first stage of the amplifier to achieve good input matching, which controls the upper frequency of the UWB system. The third stage realizes the gain at the lower corner frequency and the second stage is used to smooth the flatness of the gain curve. By using this method, the proposed design has the lowest group delay variation among the recently reported CMOS PAs for 3.1 to 10.6 GHz applications.

Original languageEnglish
Article number6108314
Pages (from-to)41-43
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume22
Issue number1
DOIs
Publication statusPublished - Jan 1 2012

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Group delay
power amplifiers
Power amplifiers
Ultra-wideband (UWB)
CMOS
flatness
broadband
topology
amplifier design
Topology
shunts
Broadband amplifiers
cascades
amplifiers
bandwidth
curves
Feedback
Bandwidth

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Low group delay 3.1-10.6 GHz CMOS power amplifier for UWB applications. / Sapawi, Rohana; Pokharel, Ramesh; Murad, Sohiful A.Z.; Anand, Awinash; Koirala, Nishal; Kanaya, Haruichi; Yoshida, K.

In: IEEE Microwave and Wireless Components Letters, Vol. 22, No. 1, 6108314, 01.01.2012, p. 41-43.

Research output: Contribution to journalArticle

Sapawi, Rohana ; Pokharel, Ramesh ; Murad, Sohiful A.Z. ; Anand, Awinash ; Koirala, Nishal ; Kanaya, Haruichi ; Yoshida, K. / Low group delay 3.1-10.6 GHz CMOS power amplifier for UWB applications. In: IEEE Microwave and Wireless Components Letters. 2012 ; Vol. 22, No. 1. pp. 41-43.
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