NDLI: Design of 3-Bit Digital DMTL Phase Shifter for C- to Ku-Band Applications

Content Provider	IEEE Xplore Digital Library
Author	Sengar, J.S. Das, A. Puri, M.
Copyright Year	2013
Description	Author affiliation: Dept. of ECE, Lovely Prof. Univ., Phagwara, India (Sengar, J.S.; Das, A.; Puri, M.)
Abstract	Microelectromechanical (MEMS) technology is an important platform where we can design systems which can perform at RF and millimeter wave frequencies. Such systems include the MEMS phase shifters. This paper presents the design and simulation of a 3-bit Digital Phase-Shifter based on the Distributed MEMS transmission Line (DMTL) technique, constituted with 28 capacitive shunt switches. The design is optimized to work between C-to Ku-band of frequencies but the best results are obtained at 15GHz frequency which is useful for wireless communications in Ka band. The MEMS phase shifters generally have low insertion loss, high isolation and uses low power which can further be added up to construct low cost and light weight phased array antennas. The DMTL phase shifters are designed with a CPW line loaded with capacitive shunt switches for easier access to the ground. The capacitive shunt switches are highly reliable and capable of handling high amount of RF power. The change in the phase velocity of the signal travelling through CPW line is achieved by pulling down the MEMS switches by the application of DC control voltage on the central conductor line. The digital phase shifter consists of three bits designed to obtain 45o, 90o and 180o phase shift. The spacing between the switches is 250μm. The insertion loss is calculated at -0.73dB.
Starting Page	427
Ending Page	432
File Size	378007
Page Count	6
File Format	PDF
ISBN	9780769550336
DOI	10.1109/ICACC.2013.91
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-08-29
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Micromechanical devices Microelectromechanical Systems (MEMS) Phase shifters Bridge circuits 3-bit phase shifter Insertion loss Coplanar Waveguide (CPW) Capacitance Coplanar waveguides Impedance Distributed MEMS Transmission Line (DMTL)
Content Type	Text
Resource Type	Article

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