MEMS-based Amplified Switch Filter Bank
Although not suitable for continuous switching applications, MEMS-based switch banks offer several advantages over PIN diode versions. A passive version is under development which consumes zero power while operating after the commanded state is reached. In a passive switched filter bank, latching MEMS switches would also provide a fail-safe for operation in case prime power is lost. Another advantage is the linearity of the MEMS over PIN diodes. A passive MEMS-based switch bank is able to handle in excess of 30 dBm while a PIN diode version with only a 3.3 V supply would be limited to about 18 dBm unless DC-DC converters were used.
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