Title :
A Novel Doubly-Balanced Folded Mixer for Low Supply Voltage and Direct Up-Conversion System
Author :
Lin, Chih-Ming ; Wei, Hung-Ju ; Wang, Yi-Ting ; Wang, Shyh-Chyi ; Wang, Yeong-Her
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng-Kung Univ., Tainan
Abstract :
A direct up-conversion mixer from 1MHz to 2.4GHz implemented by TSMC 0.18mum 1P6M CMOS process is demonstrated. In this design, the combination of the concepts of "active dual-gate mixer" and "passive FET mixer" is used to achieve mixing effect. With the "folded" structure, this mixer can operate at low voltage (1V) normally. As the results show, the conversion gain is 2.5dB at 0dBm of LO power and the P1db is about -3.5dBm. At the same time, the isolations of LO/input and input/output are both more than 30dB, but the isolation of LO/output is about 10~20 dB
Keywords :
CMOS integrated circuits; UHF mixers; 0.001 to 2.4 GHz; 0.18 micron; 2.5 dB; CMOS process; active dual-gate mixer; direct up-conversion system; doubly-balanced folded mixer; mixing effect; passive FET mixer; Bonding; CMOS process; Capacitors; Circuit simulation; FETs; Frequency conversion; Gain measurement; Low voltage; Power measurement; Radio frequency;
Conference_Titel :
Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0160-7
Electronic_ISBN :
1-4244-0161-5
DOI :
10.1109/ICSICT.2006.306289
