voltage-controlled oscillator meaning in English

电压可近振荡器
压控振荡器

Examples

Voltage - controlled oscillator
压控振荡器
Recently , much attention has been paid to the thin films of tunable dielectric materials for their applications in microwave agile devices , such as phase shifters , tunable filters , and voltage - controlled oscillators ( vcos )
随着导弹等快速进攻性武器的发展，对雷达的功能提出了许多新的要求。采用机械扫描方式的天线已很难适应新的作战要求。
With the rapid advancement of process and technology , especially the realization of on - chip passive elements such as inductors and varactors , the on - chip implementation of voltage - controlled oscillators ( vcos ) which are necessary in wireless transceivers has become easy
在工艺技术的飞速进步下,尤其是电感和变容管等无源器件片上实现问题的解决,压控振荡器已经可以实现单片集成,这对降低收发机的成本十分关键。
The voltage - controlled oscillator and the dual - modulus prescaler are the most crucial blocks in the pll frequency synthesizer . two kinds of voltage - controlled oscillator ( the quadrature voltage - controlled oscillator based on symmetrical spiral inductors and differential varactors , and the voltage - controlled oscillator with wide tuning range based on mos varactors ) and two kinds of prescaler ( the prescaler using phase - switching techniques , and the prescaler using dynamic circuit techniques ) are proposed . then , the complete pll frequency synthesizer is implemented , in which
压控振荡器和双模预分频器是锁相环型频率合成器中最关键的两个模块，本论文分别实现了两种类型的压控振荡器（采用对称螺旋型电感和差分二极管型容抗管的正交压控振荡器和使用mos型容抗管的大调谐范围压控振荡器）和两种类型的双模预分频器（使用相位开关技术的双模预分频器和使用动态电路技术的双模预分频器）。
The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed , which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system , and simulator program of dynamic and steady condition is established , which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system , a comparison is made between predicted and experimental characteristics , experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion , harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched , which cancelled the low harmonic and improve the system performance
通过对电机的kron变换和对称分量变换，建立了系统较精确的数学模型，编制了系统动态及稳态运行的仿真计算程序分别计算系统的动态和稳态性能。通过对系统的具体参数进行了仿真运算和实验研究，实验和仿真结果进行比较，说明实验和理论较为一致，并从系统效率、转矩脉动及两相逆变器电容的影响等方面与各种逆变器和单相异步电动机组成的变频调速系统加以比较。在此基础上，对两相逆变器供电-异步电动机系统使用谐波抑制pwm控制进行了研究，由于减少了低次谐波，改善了系统性能。

voltage-controlled oscillator meaning in English

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