Abstract
Abstract – We have designed and fabricated a low power and high linearity up down convertor for wireless repeaters using 0.35 ㎛ SiGe Bipolar CMOS technology. Repeater is composed of a wideband up/down converting mixer, programmable gain amplifiers (PGA), input buffer, LO buffer, filter driver amplifier and integer-N phase locked loop (PLL). As of the measurement results, OIP3 of the down conversion mixer and up conversion mixer are 32 dBm and 17.8 dBm, respectively. The total dynamic gain range is 31 dB with 1 dB gain step resolution. The adjacent channel leakage ratio (ACLR) is 59.9 dBc. The total power consumption is 240 mA at 3.3 VKey Words : Repeater, PLL, High linearity, ACLR†Corresponding Author : School of Electrical and Electronics Engineering, Chung-Ang University, Korea.E-mail: ychoi@cau.ac.kr* School of Electrical and Electronics Engineering, Chung-AngUniversity, Korea.** EPIC Solution Co., LTd., Korea. Received : December 09, 2014; Accepted : February 26, 2015
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