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Published March 18, 2021 | Version v1
Conference paper Open

A Highly Linear Dual Stage Amplifier with Beyond 1.75 THz Gain-Bandwidth-Product

  • 1. Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH)
  • 2. Technical University of Denmark

Description

This work reports a multi-purpose highly linear ultra-wideband amplifier with a gain bandwidth product (GBP) of 1.75 THz, the highest reported in any MMIC process. A transimpedance amplifier is cascaded with a distributed amplifier, emulating a receiver subsystem. Using a diamond heat spreader, to dissipate heat from transistors, the cascaded amplification subsystem can achieve very high OIP3 from 20 to 24 dBm when measured between 5 to 65 GHz. A small signal average gain of 24 dB is observed over a frequency range exceeding the maximum measurable bandwidth from DC to 110 GHz. Compared with other ultra-wideband MMIC amplifiers beyond 110 GHz bandwidth, the circuit offers a unique combination of high linearity (OIP3) and high gain. As a result, the cascaded amplifier is suitable for applications in optical-electrical converters, spectroscopy and ultrawideband measurement systems in the sub-THz frequency range.

Files

6. A-Highly-Linear-Dual-Stage-Amplifier-with-Beyond-1.75-THz-Gain-Bandwidth-Product-IEEE-Microwave-and-Wireless-Components-Letters-DOI-10.1109LMWC.2021.3067145.pdf

Additional details

Funding

TERAWAY – Terahertz technology for ultra-broadband and ultra-wideband operation of backhaul and fronthaul links in systems with SDN management of network and radio resources 871668
European Commission