Title :
Coplanar Switches in PHEMT Technology from X-to W-Band
Author :
Züfle, K. ; Haydl, W. ; Massler, H. ; Bosch, R. ; Schneider, J.
Author_Institution :
Fraunhofer Institute for Applied Solid State Physics (IAF), Tullastrasse 72, D-79108 Freiburg, Germany. phone +49-761-5159-442, fax +49-761-5159-565, e-mail: zuefle@iaf.fhg.de
Abstract :
AlGaAs/lnGaAs/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.
Keywords :
Coplanar waveguides; Fabrication; Frequency; Insertion loss; Isolation technology; MMICs; Monolithic integrated circuits; PHEMTs; Switches; Switching circuits;
Conference_Titel :
Microwave Conference, 1997. 27th European
Conference_Location :
Jerusalem, Israel
DOI :
10.1109/EUMA.1997.337840
