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A broadband single pole double throw (SPDT) switch has been developed for use in the range of 0 to 30 GHz. The switch consists of a cascade of a MEMS ohmic series and a capaci-tive shunt switch with floating electrode in each branch. It is manufactured on high-resistive silicon using surface micro-machining technology. The SPDT switch provides an insertion loss better than -0.6 dB, return loss smaller than -20dB, and isolation better than -40 dB in nearly the whole band. A switching voltage around 50 V is needed. The switch is used as a building block for more complex switching networks. The fabrication process is described and the measured RF-performances are reported and discussed. A failure analysis exhibits a lifetime up to 109 actuations
Publication date: 
10 Sep 2006

Sergio DiNardo, Paola Farinelli, Flavio Giacomozzi, Giovanni Mannocchi, Romolo Marcelli, Benno Margesin, Paolo Mezzanotte, Viviana Mulloni, Peter Russer, Roberto Sorrentino, Francesco Vitulli, Larissa Vietzorreck

Biblio References: 
Pages: 501-504
2006 European Microwave Integrated Circuits Conference