Dynamically switched low-phase-noise LC VCO with harmonic filtering

作者：Liu P^*; Upadhyaya P; Jung J; Heo D; Kim J H; Kim B S

来源：Electronics Letters, 2011, 47(14): 792-U117.

DOI：10.1049/el.2011.0741

A novel load-independent switched LC VCO with PMOS dynamically switched current source and harmonic filtering is presented. The VCO has been designed and implemented with Jazz 0.18 mu m CMOS process. At 5.47 GHz carrier frequency, the VCO achieves a measured phase noise of -122.4 and -102 dBc/Hz at 1 MHz and 100 kHz offset, respectively. The VCO works between 5.3-5.7 GHz, which yields a tuning range of 400 MHz. This VCO consumes 4.2 mA from a 1.2 V supply and the figure-of-merit (FOM) is -190.2 dBc/Hz, which is among the best published FOM results for 5-6 GHz VCOs in standard CMOS process.

• 出版日期2011-7-7