题目/Title：A 47.6-to-71.0 GHz 65-nm CMOS VCO Based on Magnetically Coupled pi-Type LC Network

作者/Author：贾海昆,池保勇,况立雪,王志华
                        Haikun Jia,Baoyong Chi,Lixue Kuang,Zhihua Wang

期刊/Journal：IEEE Transactions on Microwave Theory and Techniques

年份/Issue Date：2015May

卷（期）及页码/Volume（No.）&pages：Vol.63, No.5, pp. 1645 - 1657

摘要/Abstract：
A wide tuning range mm-wave voltage controlled oscillator (VCO) based on magnetically coupled p-type LC network in 65nm CMOS is proposed. By configuring the switched negative-resistance unit, the VCO can oscillate at the even mode or the odd mode of the magnetically coupled p-type LC network, thus the tuning range is widened without introducing the switch loss into the resonator. The proposed VCO achieves a measured continuous tuning range of 39%, from 47.6 to 71.0 GHz. The measured phase noise for a 47.6 GHz carrier at the even mode and 56.2 GHz carrier at the odd mode are -110.3 dBc/Hz and -107.3 dBc/Hz at 10 MHz offset, with a corresponding FOMT of -185.5 dBc/Hz and -183.9 dBc/Hz, respectively. The measured phase noise in the whole frequency tuning range varies from -101.7 to -113.4 dBc/Hz at 10 MHz offset, while the corresponding FOM and FOMT vary from -167.8 to -179.0 dB and -179.6 to 190.6 dB, respectively. The VCO core consumes 8.9~10.4 mA current from 1.0 V power supply and 320x230 mm2 die area.