A Broadband Bidirectional Amplifier Using Gm-Bandwidth Extension Technique

Shou Hsien Weng, Hong Yeh Chang, Yu Chi Wang

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A broadband GaAs bidirectional distributed amplifier (BDA) designed using Gm-bandwidth ( Gm-BW) extension technique is presented in this letter. A Gm-BW extension configuration is investigated, and utilized in the gain stage of the BDA for enhancing gain and bandwidth performance. The isolation between forward path and reverse path is improved by using adaptive load network. The BDA exhibits small-signal gains of higher than 14.4 dB with a 3 dB bandwidth from 1.6 to 23.6 GHz. The measured output 1 dB gain compression point (OP1 dB) and output third-order intercept point (OIP3) over 3 dB bandwidth are higher than -7 and 1 dBm, respectively.

Original languageEnglish
Article number7480369
Pages (from-to)449-451
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Issue number6
StatePublished - Jun 2016


  • Bidirectional
  • distributed
  • GaAs
  • HEMT


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