Four Bit Digital Phase Shifter for Electronic Beam Steering Applications
T. Akhila Sree1, P. Satish2, P. Rajesh3, M. Sekhar4

1T. Akhila Sree, Department of Software Engineer, HCL Technologies Limited, Bangalore (Karnataka), India.
2P. Satish, Analyst, HCL Technologies Limited, Noida (Uttar Pradesh), India.
3P. Rajesh, Assistant Professor, Department of E.C.E, NRI Institute of Technology, Vijayawada (Andhra Pradesh), India.
4M. Sekhar, Assistant Professor, Vignan’s Foundation for Science Technology and Research, Guntur (Andhra Pradesh), India.
Manuscript received on 13 February 2019 | Revised Manuscript received on 04 March 2019 | Manuscript Published on 08 June 2019 | PP: 261-265 | Volume-7 Issue-5S4, February 2019 | Retrieval Number: E10520275S419/19©BEIESP
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Abstract: A Four bit Digital Phase shifter is Proposed in this paper which is capable of generating four different phases of 22.50 ,450 ,900 ,1800 . The phase shifting is done using four different sections comprising of low pass and high pass filters in the circuit where each section will produce a respective phase shift depending upon the input digital control bits which control the operation of the four sections. The phase shifter is designed to serve the ISM band application with a center frequency of 900MHz and a bandwidth of 200MHz ranging from800MHz to 1000MHz. Phase errors of 0.50 , 0.30 , 1.60 , 2.60 are observed at 1800 , 900 , 450 and 22.50 respectively. A minimal variation of 1.5dB in insertion loss is observed for the entire operating bandwidth.
Keywords: Digital Phase Shifter, Filter, Digital Control Bits, ISM Band.
Scope of the Article: Digital Clone or Simulation