Abstract

This paper presents graphical optimization method of LC voltage controlled oscillator (LC_VCO). This method accomplishes with optimum size of LC_VCO components. This oscillator is characterized by tuning range of 4% from carrier frequency centered in 4 GHz. The phase noise is -126 dBc/Hz at 1 MHz offset frequency from carrier frequency of 4 GHz and the power consumption is 11.6 mW from a 2.5 V supply voltage. Theory approximations by graphical optimization method are verified by simulation.

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