Title :
Design of a down / up conversion mixer with built-in oscillator
Author :
Wu, Chang-Hsi ; Huang, Wei-Hui
Author_Institution :
Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Taoyuan, Taiwan
Abstract :
A down/up conversion mixer with built-in oscillator for IEEE 802.11a applications using 0.18μm CMOS technology is proposed in this paper. With the techniques of LO body-grounded and output IF/RF common load, the conversion gain of the designed mixer can be improved not only for down conversion, but also for up conversion. Besides, the up-converted gain is also increased by gm-boosting technique, and the higher linearity of the down-conversion is achieved by using source degeneration in the mixer. Simulation results of the proposed mixer show the down conversion gain of 13.5dB with the IIP3 of -7dBm and the up conversion gain of 6.2dB with the IIP3 of -4.8dBm while consuming 4.37mW and 2.2mW from a 1.8-V supply voltage, respectively. The built-in voltage control oscillator (VCO) exhibits phase noise and output power of -113.6dBc/Hz and -0.9dBm, respectively. The chip size includes PAD is 1.394mm×1.182mm.
Keywords :
convertors; mixers (circuits); voltage-controlled oscillators; wireless LAN; CMOS technology; IEEE 802.11a; built-in voltage control oscillator; down conversion gain; down/up conversion mixer; gain 13.5 dB; gain 6.2 dB; power 2.2 mW; power 4.37 mW; size 0.18 mum; source degeneration; up conversion gain; up-converted gain; voltage 1.8 V; CMOS integrated circuits; CMOS technology; Mixers; Radio frequency; Transconductance; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2010 Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7590-2
Electronic_ISBN :
978-1-902339-22-2
