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Low-insertion loss phase shifter for millimeter-wave phased array antennas

Published online by Cambridge University Press:  16 October 2014

Ahmed Shehata Abdellatif*
Affiliation:
Electrical and Computer Engineering Department, University of Waterloo, Waterloo, ON N2L3G1, Canada
Aidin Taeb
Affiliation:
Electrical and Computer Engineering Department, University of Waterloo, Waterloo, ON N2L3G1, Canada
Nazy Ranjkesh
Affiliation:
Electrical and Computer Engineering Department, University of Waterloo, Waterloo, ON N2L3G1, Canada
Suren Gigoyan
Affiliation:
Electrical and Computer Engineering Department, University of Waterloo, Waterloo, ON N2L3G1, Canada
Elizaveta Nenasheva
Affiliation:
GIRICOND Research Institute, Saint Petersburg 194223, Russia
Safieddin Safavi-Naeini
Affiliation:
Electrical and Computer Engineering Department, University of Waterloo, Waterloo, ON N2L3G1, Canada
*
Corresponding author: A. S. Abdellatif Email: [email protected]

Abstract

This paper proposes a compact, low-loss, and low-cost phase shifter for millimeter-wave/sub-THz applications. The basic idea is to perturb the propagation constant of a high resistivity silicon image guide by high-dielectric constant barium lanthanide tetratitanates (BLT) ceramic loading. Three different BLT ceramic samples have been tested. The measured maximum phase-shift variation reaches 150° at 100 GHz with an average insertion loss of 2.85 dB and an insertion loss variation <0.7 dB for a sample of a 5-mm length. The proposed phase shifter has a bandwidth from 95 to 105 GHz. A low-cost fabrication technology has been developed and used to realize this phase shifter.

Type
Research Papers
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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