Design of Reliable Analog DMTL Phase Shifter with Improved Performance for Ku Band Applications

Authors

  • Shilpi Pandey CSIR-Central Electronics Engineering Research Institute, Pilani
  • Deepak Bansal CSIR-Central Electronics Engineering Research Institute, Pilani
  • Prachi Jhanwar Banasthali Vidyapith, Banasthali
  • Seema Verma Banasthali Vidyapith, Banasthali
  • K.J. Rangra CSIR-Central Electronics Engineering Research Institute, Pilani

DOI:

https://doi.org/10.14429/dsj.65.8377

Keywords:

RF MEMS, DMTL, phase shifter, varactor, Ku band applications

Abstract

An analog phase shifter based on distributed MEMS transmission line (DMTL) is designed for Ku band applications. Traditional RF MEMS phase shifter comprising 6 switches has limited phase shift of 37.75° due to instability region. A new concept of stopper is incorporated to achieve high phase shift. In the present paper, optimisation of the analog phase shifter is done to increase its phase shift upto 88.63°. Phase shift is a strong function of capacitance ratio which is increased from 1.75 to 2.95. The maximum operating voltage and mechanical resonant frequency for the phase shifter are 16 V and 8.3 KHz, respectively. The switching time is calculated to 56 μs. The simulated insertion loss of the phase shifter is -1.75 dB with return loss of -20.49 dB at 17 GHz. The simulated results are verified with analytical modelling which are in close match.

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Published

2015-09-11

How to Cite

Pandey, S., Bansal, D., Jhanwar, P., Verma, S., & Rangra, K. (2015). Design of Reliable Analog DMTL Phase Shifter with Improved Performance for Ku Band Applications. Defence Science Journal, 65(5), 403–410. https://doi.org/10.14429/dsj.65.8377

Issue

Vol. 65 No. 5

Section

Engineering Science & Technology

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