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Coplanar switches in PHEMT technology from X- to W-Band

Koplanare Schalter in PHEMT-Technologie von X- bis W-Band
: Züfle, K.; Haydl, W.; Massler, H.; Bosch, R.; Schneider, J.

27th European Microwave Conference and Exhibition 1997. Conference proceedings. Vol.1
Piscataway, NJ: IEEE, 1997
ISBN: 0-7803-4202-X
European Microwave Conference and Exhibition (EuMC) <27, 1997, Jerusalem>
Fraunhofer IAF ()
coplanar; HEMT; koplanar; microwave; Mikrowelle; Schalter; switch

AlGaAs/InGaAs/GaAs PHEMT switching elements, combined with coplanar waveguide technology have been investigated to realize switches from X-band through W-band. Experimentally determined models, which apply over a range of 1-120 GHz, were used for the coplanar lines and elements. Several switch topologies, compatible with the active MMIC technology, have been designed and analyzed. With two different concepts for the X-band switches, we achieved insertion losses of 1.3/1.7 dB and isolations of 30/45 dB at 10 GHz. At W-band we obtained 2.9/3.2 dB insertion losses and isolations of 22/16 dB at 76 and 94 GHz, respectively.