Design of electrically tunable phase shifter for antenna arrays operating in Ku-band
Résumé
This paper deals with the modeling and
simulation of a wideband analog phase shifter for Ku
applications. The structure adopted is based on a 90° branchline
coupler loaded by varactor diodes used to provide a wide
phase shift range. The main idea of this work is to integrate
controlled phase shifters in the antenna array in order to
control its main beam between different satellites. Several
circuits have been tested and optimized using ADS software
from Agilent Technologies to obtain a wide bandwidth and
wide phase shift range with low insertion loss over the Ku
band.
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