Title :
A 25-to-45-GHz 45° power divider
Author :
Jui-Chih Kao ; Yuan-Hung Hsiao ; Kuang-Sheng Yeh ; Chau-Ching Chiong ; Yu-Hsuan Lin ; Kun-You Lin ; Huei Wang
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A 0.15-μm pHEMT 25-to45-GHz wideband 45° power divider with continuously tunable phase and gain differences is presented in this paper. This circuit includes a modified Wilkinson power divider with wide isolation bandwidth. Also, a phase-compensated technique is utilized to maintain constant phase difference in each phase step over a wide bandwidth. The gain and phase errors are better than 1.3 dB and ±2.5°, and the insertion loss, return losses, and isolation of this phase shifter are better than 3.7 dB, 10 dB and 19 dB, respectively, from 25 to 45 GHz.
Keywords :
high electron mobility transistors; phase shifters; power dividers; Wilkinson power divider; constant phase difference; continuously tunable phase; frequency 25 GHz to 45 GHz; gain differences; gain error; insertion loss; pHEMT; phase error; phase shifter; phase-compensated technique; return loss; size 0.15 mum; wide isolation bandwidth; wideband power divider; Delays; Frequency control; Gain; Phase shifters; Power dividers; Varactors; Wideband; Wilkinson power divider; attenuator; pHEMT; varactor; wireless communication;
Conference_Titel :
Microwave Conference (EuMC), 2013 European
Conference_Location :
Nuremberg
