https://scholars.lib.ntu.edu.tw/handle/123456789/497540
標題: | A 206 ? 220 GHz CMOS VCO using body-bias technique for frequency tuning | 作者: | Chiang, P.-H. Cheng, J.-H. Wu, Y.-C. Chiong, C.-C. Liu, W.-D. Huang, G.-W. Huang, T.-W. HUEI WANG TIAN-WEI HUANG |
公開日期: | 2015 | 來源出版物: | 2015 IEEE MTT-S International Microwave Symposium, IMS 2015 | 摘要: | A 206 ∼ 220 GHz varactor-free voltage-controlled oscillator (VCO) is proposed to improve the output power and tuning range. The topology of the VCO is push-push crosscoupled pair. By using body-bias technique, the parasitic capacitor of the cross-coupled pair can be adjusted, and the varactors in the conventional VCO design can be removed. The proposed VCO was designed and implemented in TSMC 65-nm CMOS technology with a chip size of 0.25 × 0.25 mm2. The tuning range is 6.6% (from 206.2 to 220 GHz). The measured phase noise is -66 dBc/Hz at 1 MHz offset frequency. The output power is 1.3 dBm at 216 GHz with 54-mW dc power consumption and its maximum dc-to-RF efficiency is 2.1%. To the best of our knowledge, this varactor-free VCO achieves the highest dc-to-RF efficiency among published CMOS VCOs around 200 GHz. © 2015 IEEE. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/497540 | DOI: | 10.1109/MWSYM.2015.7166853 | SDG/關鍵字: | Bias voltage; Circuit oscillations; CMOS integrated circuits; Energy efficiency; Oscillistors; Phase noise; Varactors; Body bias; CMOS technology; Cross-coupled; DC power consumption; Frequency-tuning; Offset frequencies; Parasitic capacitors; Tuning ranges; Variable frequency oscillators |
顯示於: | 電機工程學系 |
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