Title :
Low insertion loss variable phase shifter for emerging millimeter-wave communication systems
Author :
Abdellatif, Ahmed Shehata ; Ranjkesh, N. ; Fahimnia, Mehrdad ; Taeb, A. ; Gigoyan, S. ; Safavi-Naeini, S.
Author_Institution :
Univ. of Waterloo, Waterloo, ON, Canada
Abstract :
This paper proposes a compact, low-loss, and low cost phase shifter for mmWave applications. The basic idea is perturbing the propagation constant of a CPW line by its loading with a high dielectric constant BLT ceramic. The phase shift is sensitive to the air gap between the CPW and the BLT sample. For a sample with a length of 3mm, a phase shift of 170° at 30GHz is obtained while the average insertion loss is less than 1.45dB with a variation of 1.1dB for the full range of phase shifts.
Keywords :
barium compounds; ceramics; cerium compounds; coplanar waveguides; dielectric materials; europium compounds; lanthanum compounds; microwave materials; microwave phase shifters; millimetre wave materials; millimetre wave phase shifters; neodymium compounds; praseodymium compounds; samarium compounds; titanium compounds; BaO-Ce2O3TiO2; BaO-Eu2O3TiO2; BaO-La2O3TiO2; BaO-Nd2O3TiO2; BaO-Pr2O3TiO2; BaO-Sm2O3TiO2; CPW line; air gap; dielectric constant BLT ceramic; frequency 30 GHz; loss 1.1 dB; low insertion loss variable phase shifter; millimeter-wave communication system; propagation constant; size 3 mm; Coplanar waveguides; Impedance; Microwave antennas; Microwave theory and techniques; Phase measurement; Switches; Thickness measurement; Coplanar waveguide; high resistivity Silicon; millimeter-wave antennas; phase shifters;
Conference_Titel :
Microwave Symposium (IMS), 2014 IEEE MTT-S International
Conference_Location :
Tampa, FL
DOI :
10.1109/MWSYM.2014.6848543
