Title :
A 25–75 GHz Broadband Gilbert-Cell Mixer Using 90-nm CMOS Technology
Author :
Tsai, Jeng-Han ; Wu, Pei-Si ; Lin, Chin-Shen ; Huang, Tian-Wei ; Chern, John G J ; Huang, Wen-Chu
Author_Institution :
Dept. of Electr. Eng. & Graduate Inst. of Commun. Eng., Nat. Taiwan Univ., Taipei
fDate :
4/1/2007 12:00:00 AM
Abstract :
A compact and broadband 25-75-GHz fully integrated double-balance Gilbert-cell mixer using 90-nm standard mixed-signal/radio frequency (RF) CMOS technology is presented in this letter. A broadband matching network, LC ladder, for Gilbert-cell mixer transconductance stage design is introduced to achieve the flatness of conversion gain and good RF port impedance match over broad bandwidth. This Gilbert-cell mixer exhibits 3plusmn2dB measured conversion gain (to 50-Omega load) from 25 to 75GHz with a compact chip size of 0.30mm2. The OP1 dB of the mixer is 1dBm and -4dBm at 40 and 60GHz, respectively. To the best of our knowledge, this monolithic microwave integrated circuit is the highest frequency CMOS Gilbert-cell mixer to date
Keywords :
CMOS integrated circuits; MMIC; microwave mixers; millimetre wave mixers; radiofrequency integrated circuits; 25 to 75 GHz; 90 nm; LC ladder; broadband Gilbert-cell mixer; broadband matching network; double-balance Gilbert-cell mixer; monolithic microwave integrated circuit; radio frequency CMOS technology; transconductance stage design; Bandwidth; CMOS integrated circuits; CMOS technology; Gain measurement; Impedance; Mixers; Radio frequency; Semiconductor device measurement; Size measurement; Transconductance; CMOS; Gilbert-cell; millimeter-wave (MMW); mixer; monolithic microwave integrated circuit (MMIC);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.892934
