voltage controlled oscillator (vco)の例文
- Voltage controlled oscillator ( vco ) is a key component of modern electronic equipments
- The system parameters are developed at the same time , and some universal conclusions on the theoretical analysis of pll are reached . then , we have carried on analysis and research to the theory of differential delay ring voltage controlled oscillator ( vco ) . on this basis , a improved differential delay ring vco with more efficient loads is described . this circuit has been designed and implemented in 0 . 35 m cmos technology
- The thesis describes a prototype fractional frequency synthesizer which is supported by a project granted by the ministry of science and technology of pr china . firstly , based on the principle of pll , this paper briefly describes three basic pll components : phase detector ( pd ) , low pass filter ( lpf ) , voltage controlled oscillators ( vco ) , analyzes the linearized pll and summaries the transfer functions of third - order pll with ideal intergrator filter respectively . based on a microwave vco , the single point frequency pll frequency ranging from 2 . 2 to 2 . 5ghz is developed
