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 |