• NEELIMA KOLHARE
• DR U B SHINDE

A 2 bit MEMS (Micro Electro Mechanical System) Phase shifter designed over a 4 to 7 GHz frequency applied for satellite communication. 4 to 7 GHz frequency phase shifter is implemented by using high pass and low pass filter topology. High pass and low pass filter topology consists of series and shunt inductors and capacitors either in T or π combinations. 2 bit phase shifter consists of 90° and 180° stage. As the first stage switches between +45° and -45° and second switch between +90° and -90° the resulting phase shift is in +135° to -135° in 45° steps. Every stage is controlled by pair of voltage source which is applied to MESFET pairs for switching ON and OFF arm. The Main advantage of high pass and low pass filter topology is, they are small in size, large bandwidth, and minimum phase variations. In this design, return loss (S21) should be less than -10dB and insertion loss (S11) should be less than 4dB. Also replacing MEMS switches with GaAs FET insertion loss minimizes.

"Design and Development of 2 Bit MEMS Phase Shifter for Satellite Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.416-419, June 2019, Available :http://www.jetir.org/papers/JETIR1906U92.pdf

"Design and Development of 2 Bit MEMS Phase Shifter for Satellite Communication", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp416-419, June 2019, Available at : http://www.jetir.org/papers/JETIR1906U92.pdf