Design of Uniform 2-bit Reconfigurable Frequency Measurement Discriminator using 180° Silicon MEMS Phase Shifter

This paper proposes a reconfigurable frequency receiver using a silicon MEMS phase shifter. The proposed Reconfigurable Frequency Measurement (RFM) receiver has lower power consumption and smaller size than conventional IFM and RFM receiver using PIN diodes. We designed a MEMS phase shifter that produces a phase difference of 180°at 35 GHz. The RF simulation results show that the MEMS phase shifter has a phase difference of 180.2°at 35 GHz and can be used as a reconfigurable delay line. The RFM discriminator shows that 2-bit identification is possible in the 30-40 GHz frequency band. We obtain a uniform frequency division between 32 GHz and 40 GHz by tuning the length of reference line and short stub.