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This paper presents a new type of tunable low-pass filter for millimeter-waves. The filter is based on the slow-wave coplanar waveguide (CPW) lines and tuned by the MEMS capacitive shunt switches. There are 5 switches which can provide two orders of tunable mode. In the first order tuning, the 3 dB cut-off frequency changes from 8.2 GHz to 10.5 GHz, and the second order tuning is 8.2 GHz to 16.8 GHz...
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