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60 GHz monolithic GaAs front-end circuit for receiver applications

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3 Author(s)
G. K. Barker ; Standard Telecommunication Laboratories Ltd., Harlow, UK ; M. H. Badawi ; J. Mun

A millimetre-wave planar mixer diode compatible with GaAs MESFET based integrated circuit fabrication has been developed. Selective ion implantation was used to optimise the diode and FET doping profiles. A novel feature reported here is the use of a deep implanted buried n+ layer to minimise diode series resistance, yielding diode cutoff frequencies in excess of 500 GHz. Monolithic balanced mixer diodes integrated with an MESFET IF amplifier fabricated by this technique have given 5dB conversion loss at 60 GHz.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 8 )