Title :
The design of millimeter wave monolithic fourth-harmonic image rejection mixer
Author :
Changsi, Wang ; Guo Yunchuan ; Xu Yuehang
Author_Institution :
EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A 32-38 GHz monolithic fourth-harmonic image rejection mixer is designed with the commercial 0.15-μm pseudomorphic high electron-mobility transistor (pHEMT) process in this paper. This mixer employs a compact Marchand Balun for LO signal pump and a Lange Coupler for RF quadrature signal generation, as well as two resistive FET mixer cells which are based on the improved gate bias circuits. The chip size is minimized to 1.8 mm×1.6 mm. According to the results of the simulation, Image rejection ration (IRR) is more than 23 dB and conversion loss(CL) is from 16.5 to 20 dB in the frequency range of 32 to 38 GHz. And the high isolation, which is better than 32 dB from LO to RF, and 30 dB from 4LO to RF, can be achieved by the proposed configuration.
Keywords :
baluns; high electron mobility transistors; millimetre wave couplers; millimetre wave field effect transistors; millimetre wave mixers; Lange coupler; RF quadrature signal generation; compact Marchand balun; frequency 32 GHz to 38 GHz; loss 16.5 dB to 20 dB; millimeter wave monolithic fourth-harmonic image rejection mixer; pHEMT process; pseudomorphic high electron-mobility transistor; size 0.15 mum; Integrated circuits; Mixers; Reliability; Wireless communication; conversion loss; fourth-harmonic mixer; image rejection; monolithic microwave integrated circuit (MMIC); pHEMT;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011
Conference_Location :
Harbin
Print_ISBN :
978-1-4244-9792-8
DOI :
10.1109/CSQRWC.2011.6037024
