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A 0.5–7.5 GHz Ultra Low-Voltage Low-Power Mixer Using Bulk-Injection Method by 0.18- μm CMOS Technology

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3 Author(s)
Kung-Hao Liang ; Nat. Central Univ., Chung-Li ; Hong-Yeh Chang ; Chan, Yi-Jen

A fully differential low-voltage low-power downconversion mixer using a TSMC 0.18-mum CMOS logic process is presented in this letter. The mixer was designed with a four-terminal MOS transistor, the radio-frequency (RF) and local-oscillator signals apply to the gate and bulk of the device, respectively while the intermediate frequency (IF) signals output was from the drain. The mixer features a maximum conversion gain of 5.7dB at 2.4 GHz, an ultra low dc power consumption of 0.48 mW, a noise figure of 15 dB, and an input IP of 5.7 dBm. Moreover, the chip area of the mixer core is only 0.18 times 0.2 mm2. The measured 3-dB RF frequency bandwidth is from 0.5 to 7.5 GHz with an IF of 100 MHz, and it is greatly suitable for low-power in wireless communication.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:17 ,  Issue: 7 )