Abstract
Distributed Micro Electromechanical systems Transmission Line (DMTL) is used for designing digital phase shifters, by using an array of shunt switches. In the present paper, a new approach for designing DMTL for small phase steps is proposed. In the present work, an additional single switch section is introduced, having half the phase shift as the other switch sections in the DMTL. The addition of the new switch section does not alter the characteristic impedance or total phase shift of the DMTL phase shifter. A high resolution phase shifter is designed using the proposed model and the simulation results are presented. The proposed method can be further extended for achieving smaller phase steps.
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