Title :
A 50–70 GHz I/Q modulator with improved sideband suppression using HPF/LPF based quadrature power splitter
Author :
Tsai, Yi-Chien ; Kuo, Jing-Lin ; Tsai, Jeng-Han ; Lin, Kun-You ; Wang, Huei
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
This paper presents a 50-70 GHz wideband I/Q modulator with improved sideband suppression. The sideband suppression improvement results from the on-chip HPF/LPF based broadband quadrature power splitter. The I/Q modulator exhibits conversion gain of -6 to -2 dB from 50-70 GHz. The LO-RF isolation is better than 36 dB. The sideband suppression is better than 19 dBc from 50 to 75 GHz.
Keywords :
millimetre wave circuits; modulators; HPF-LPF based quadrature power splitter; I-Q modulator; LO-RF isolation; broadband quadrature power splitter; frequency 50 GHz to 70 GHz; sideband suppression; Broadband antennas; Broadband communication; Indexes; Lead; Microwave measurements; Semiconductor device measurement; HPF/LPF; I/Q modulator; quadrature power splitter (QPS);
Conference_Titel :
Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International
Conference_Location :
Baltimore, MD
Print_ISBN :
978-1-61284-754-2
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2011.5972598
