Single-stage and multiplicative distributed amplifiers for 200GHz+ amplification
Paper in proceedings, 2019

In this paper, we review the merit of the single stage distributed amplifier (SSDA) and consider the potential of its derivative multiplicative amplifier topologies (the cascaded and the matrix SSDA) for ultra-wideband amplification. We highlight the significant bandwidth advantage that the SSDA topology offers and the higher gain potential of multiplicative DAs compared to the conventional multi-stage DA. Furthermore, we describe how available design trade-offs may be used to offset inherent noise performance limitations of this family of distributed amplifiers. We also report a new SSDA MMIC with 7.1 dB gain at 200 GHz bandwidth and a high frequency gain tuning range of 5 dB to 12 dB, based on an Indium Phosphide DHBT process with 250 nm emitter width.


Distributed amplification

Ultra-wideband amplifier


Single stage distributed amplifier


Temitope Odedeyi

University College London (UCL)

Stavros Giannakopoulos

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Herbert Zirath

University College London (UCL)

I.Z. Darwazeh

University College London (UCL)

Asia-Pacific Microwave Conference Proceedings, APMC

Vol. 2019-December 640-642 9038733

2019 IEEE Asia-Pacific Microwave Conference, APMC 2019
Singapore, Singapore,

Subject Categories


Communication Systems

Signal Processing



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