A LOW POWER CONSUMPTION AND WIDE-BAND INPUT MATCHING CMOS ACTIVE BALUN FOR UWB SYSTEM APPLICATIONS

作者：Li J Y; Lin W J; Houng M P^*; Chen L S

来源：Journal of Electromagnetic Waves and Applications, 2010, 24(11-12): 1449-1457.

This work presents an ultra-wideband (UWB) active balun (balanced-to-unbalanced) with current-reused technique for wideband input matching and low power consumption by using standard 0.18 mu m CMOS processes. The proposed circuit, using parallel common gate and common source structure, can efficiently improve the input-matching bandwidth for up to 10 GHz. Besides, the proposed circuit has good gain imbalance and phase imbalance from 3.1 GHz to 10.6 GHz. The proposed active balun achieved 4 +/- 1 dB gain with amplitude (gain) imbalances less than 0.5 dB, phase differences of 180 degrees +/- 2 degrees, 11.7 mW power consumption at 1.8 V supply voltage from 3.1 GHz to 10.6 GHz, and the chip size including pads is 0.76 x 0.73 mm(2).

• 出版日期2010