https://scholars.lib.ntu.edu.tw/handle/123456789/318054
標題: | A Time-Based Frequency Band Selection Method for Phase-Locked Loops | 作者: | Y.-J. Lai TSUNG-HSIEN LIN |
公開日期: | 十一月-2005 | 卷: | 41 | 期: | 23 | 起(迄)頁: | 31-32 | 來源出版物: | Electronics Letters | 摘要: | High-performance phase-locked loops (PLLs) often require voltage-controlled oscillators (VCOs) employing both discrete and continuous tuning mechanisms to satisfy a wide frequency range and a low VCO tuning gain simultaneously. An auxiliary circuit is required to facilitate the selection among a group of discrete bands. An agile technique to search for an optimum VCO frequency band is proposed. The search is based on measuring the period difference between a reference and the VCO-divided signals. The VCO band selection circuit is implemented with a 10 GHz PLL in a 0.18 μm CMOS process and consumes only an extra 3 mA. The band selection time is less than 4 μs. © IEE 2005. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/318054 https://www.scopus.com/inward/record.uri?eid=2-s2.0-28244484963&doi=10.1049%2fel%3a20052451&partnerID=40&md5=50a24bc2c0af5aa592fe310679b8989d |
ISSN: | 00135194 | DOI: | 10.1049/el:20052451 | SDG/關鍵字: | CMOS integrated circuits; Frequencies; Tuning; Variable frequency oscillators; Auxiliary circuits; Frequency band selection; Frequency range; Tuning gain; Phase locked loops |
顯示於: | 電子工程學研究所 |
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