Electronically Controllable Phase Shifter with Progressive Impedance Transformation at K Band
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AuthorEl Khorassani, Mohamed; Palomares-Caballero, Ángel; Alex-Amor, Antonio; Segura Gómez, Cleofás; Escobedo, Pablo; Valenzuela Valdes, Juan Francisco; Padilla De La Torre, Pablo
Microwave tunable phase shifters3 dB/90º couplerK band
ElKhorassani, M. T., Palomares-Caballero, A., Alex-Amor, A., Segura-Gómez, C., Escobedo, P., Valenzuela-Valdés, J. F., & Padilla, P. (2019). Electronically Controllable Phase Shifter with Progressive Impedance Transformation at K Band. Applied Sciences, 9(23), 5229.
SponsorshipThis 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
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.