@misc{10481/59663,
year = {2019},
month = {12},
url = {http://hdl.handle.net/10481/59663},
abstract = {This communication presents the design of a two-port electronically tunable phase shifter at
K band. The phase shifter consists of a 3 dB hybrid coupler loaded with reflective phase-controllable
circuits. The reflective circuits are formed by varactors and non-sequential impedance transformers
which increase the operational bandwidth and the provided phase shift. The final phase shifter
design is formed by two loaded-coupler stages of phase shifting to guarantee a complete phase turn.
An 18 GHz phase shifter design with dynamic range of 600 degrees of phase shift is depicted in
this document. The prototype is manufactured and validated through measurements showing good
agreement with the simulation results.},
organization = {This work has been partially supported by the TIN2016-75097-P, RTI2018-102002-A-I00, and EQC2018-
004988-P projects of the Spanish National Program of Research, Development, and Innovation and project
B-TIC-402-UGR18 of Junta de Andalucía},
publisher = {MDPI},
keywords = {Microwave tunable phase shifters},
keywords = {3 dB/90º coupler},
keywords = {K band},
title = {Electronically Controllable Phase Shifter with Progressive Impedance Transformation at K Band},
doi = {10.3390/app9235229},
author = {El Khorassani, Mohamed and Palomares Caballero, Ángel and Alex Amor, Antonio and Segura Gómez, Cleofás and Escobedo Araque, Pablo and Valenzuela Valdes, Juan Francisco and Padilla De La Torre, Pablo},
}