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1995
Conference Paper
Titel
110 GHz Amplifiers Based on Compact Coplanar W-Band Receiver Technology
Alternative
110 GHz-Verstärker auf der Basis einer kompakten, koplanaren Empfänger-Schaltungstechnik
Abstract
The potential of coplanar waveguide technology to build compact system modules Is demonstrated by means of passive and active MMIC components. The realized passive structures comprise a Wilkinson combiner/divider and a capacitively loaded ultra miniature branch line coupler. Very good agreement between the measured and modelled data is achieved up to 120 GHz. A Cascode MODFET small signal model working up to above 100 GHz has been developed for predictable MMIC design. Based on an accurate design database, a compact Integrated amplifier utilizing cascode circuitry for application in the 100-120 GHz frequency band has been fabricated showing a measured maximum gain of 20 dB at 110 GHz. The gain Is comparable to the result of a 2-stage amplifier fabricated using 0.1 mym gate PHEMTs, while the chip size is reduced by more than 50 %.
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