A K-band Application's LC-VCO with Body Biasing Technique using 130 nm CMOS Technology

In this paper, we propose two LC Voltage Controlled Oscillators (LC-VCO) with certain insensitivity to PVT (Process, Voltage, and Temperature) variations, dedicated for K-Band applications using body biasing technique, Automatic Amplitude Control (AAC), and filtering technique to eliminate frequency noise. The VCOs are designed with TSMC 130 nm CMOS RF Technology. One with 1.2 V dc supply and maximum power consumption of 8.24 mW. The second with 0.9 V dc supply and a maximum power consumption of 2.1 mW. The designed first VCO operates at 28.73 GHz and can be tuned from 24.88 to 29.35 GHz, this correspond to 16.5% Frequency Tuning Range (FTR), the VCO core consumes through it 1.63 to 1.58 mW. At 1 MHz frequency offset from the operating frequency, this VCO achieves a phase noise of -106 dBc/Hz with a Figure of Merits (FoM) of -186.9 and a FoM(T) of -190.5 dBc/Hz. The second VCO with low power consumption, which is an upgrade of the first one, can be tunned from 20.14 to 22.19 GHz with a core consumption from 0.625 to 1.1 mW. The phase noise and the FoM at 1 MHz frequency offset from 22.19 GHz are -98.92 and -183 dBc/Hz.