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Design and Simulation of 2GHz Current Starved VCO for Frequency Synthesizer


Rajeshkumar A. Dabhi , C.U.Shah engg. college Wadhwancity; Bharat H. Nagpara, C.U.Shah engg. college Wadhwancity


Phase locked loop (PLL), Current Starved Voltage control oscillator (VCO), Complementary metal oxide semiconductor (CMOS), Tanner Tool


A low power 2GHz CSVCO is presented in this paper for PLL Frequency synthesizer. The current starve VCO is used to decrease power consumption and to improve noise characteristic of the synthesizer. The proposed VCO achieves low phase noise and wide tuning range and consume low power. The measured phase noise is – 44.77dBc/Hz at 1 MHz offset. The operating frequency can be tuned from 5.231MHz-5.098GHz with the supply voltage varying from 0.1 V to 1V step of 0.5mV. Therefore, wide the tuning range is achieved. The canter frequency of VCO is 2GHZ at 0.5V approximately. The VCO circuit, dissipated 47.874µW power under a 1V supply voltage. The VCO is design and simulated on Tanner EDA Tool using 45nm CMOS process technology with supply voltage 1 V.

Other Details

Paper ID: IJSRDV2I3122
Published in: Volume : 2, Issue : 3
Publication Date: 01/06/2014
Page(s): 968-971

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