TY - JOUR
T1 - High figure-of-merit compact phase shifters based on liquid crystal material for 1-10GHz applications
AU - Cai, Longzhu
AU - Xu, Huan
AU - Li, Jinfeng
AU - Chu, Daping
N1 - Publisher Copyright:
© 2017 The Japan Society of Applied Physics.
PY - 2017/1
Y1 - 2017/1
N2 - A liquid crystal (LC) based tunable microstrip line (ML) phase shifter featuring high performance is presented. The experimental results show an electrically tunable differential phase up to 360° at 10GHz with an overall insertion loss <8.5 dB. The device possesses a high figure-of-merit (FoM) of 64°/dB at 9.8GHz and 60°/dB between 7-10GHz. This is achieved by simultaneously considering both of the LC tuned phase and overall loss in the design. The proposed device utilizes the inverted meander ML technology to minimize its size. Taking into account the real fabrication procedure, a novel impedance matching structure is applied, and the measured return loss is considerably improved. The FoM and phase tuning property of the fabricated device as optimized are compared with the state-of-Art results published recently and show better performance for both of them.
AB - A liquid crystal (LC) based tunable microstrip line (ML) phase shifter featuring high performance is presented. The experimental results show an electrically tunable differential phase up to 360° at 10GHz with an overall insertion loss <8.5 dB. The device possesses a high figure-of-merit (FoM) of 64°/dB at 9.8GHz and 60°/dB between 7-10GHz. This is achieved by simultaneously considering both of the LC tuned phase and overall loss in the design. The proposed device utilizes the inverted meander ML technology to minimize its size. Taking into account the real fabrication procedure, a novel impedance matching structure is applied, and the measured return loss is considerably improved. The FoM and phase tuning property of the fabricated device as optimized are compared with the state-of-Art results published recently and show better performance for both of them.
UR - https://www.scopus.com/pages/publications/85007481241
U2 - 10.7567/JJAP.56.011701
DO - 10.7567/JJAP.56.011701
M3 - Article
AN - SCOPUS:85007481241
SN - 0021-4922
VL - 56
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
IS - 1
M1 - 011701
ER -