Abstract
In this paper, we propose a wide tuning range CMOS voltage control oscillator (VCO) at D band. In order to increase tuning range, we adopt switching transformer to change coupling coefficient. In addition, we cascade this 70 GHz VCO with frequency doubler to double frequency to 140 GHz. Combined-metal technique is used to improve Q of passive components and reduce insertion loss of transmission line for better phase noise. VCO tuning range is 14.5 % which is from 122.9 to 142.9 GHz. At 142 GHz, peak output power and peak efficiency is −2 dBm and 1.74 %, respectively. Phase noise is better than −96.5 dBc/Hz at all tuning frequency. The total DC power consumption is only 51 mW for 1 V supply voltage. To our best knowledge this VCO has wide tuning range and good DC to RF efficiency at D-band.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
