標題: A LOW-POWER ALL-DIGITAL PHASE MODULATOR PAIR FOR LINC TRANSMITTERS
作者: Tsai, Ping-Yuan
Chen, Tsan-Wen
Lee, Chen-Yi
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2011
摘要: This paper presents a low-power all-digital phase modulator (PM) pair to generate constant-envelope signals for LINC transmitters. To reduce the power overhead, an open-loop delay line based phase shifter with a continuous locking scheme is adopted for the PM design. This design is implemented by 90 nm CMOS technology with active area of 0.1892 mm(2). The PM provides 8-bit resolution with RMS error 0.33 degrees at IF frequency 80 MHz, and the power consumption is only 885 uW with 1.0 V supply voltage. Considering a 64-QAM OFDM system, the EVM of -31.87 dB can be achieved by using the proposed PM pair.
URI: http://hdl.handle.net/11536/15153
ISBN: 978-1-4577-1617-1
期刊: 2011 IEEE INTERNATIONAL SOC CONFERENCE (SOCC)
起始頁: 48
結束頁: 51
顯示於類別:會議論文