Design of 120 MHz Low Phase Noise Crystal Oscillator Based on Improving the Loaded Q 基于提高有载Q的120MHz低相噪晶体振荡器设计
The desalted eluates were then applied onto an ion_ exchange chromatographic column loaded with Q_sepharose for further purification of the R_phycoerythrin. 然后将洗脱液透析去盐,用阴离子交换柱层析(Qsepharose)进一步纯化。
Calculation of loaded cavity external Q 单谐振腔外部Q值的计算方法
An equivalent circuit model of the rectifier loaded 3 phase synchronous generator with d axis subtransient reactance x ″ d equal to q axis subtransient reactance x ″ q is developed for steady state and quasi steady state analysis of the synchronous rectifier load system. 在d轴与q轴超瞬变电抗值相差不大的条件下,建立了带整流负载的三相同步发电机的等效电路模型,该模型可用于同步发电机整流系统稳态和似稳态过程的分析计算。
Measured results including resonant frequencies and loaded quality factors. 测试结果包括谐振频率和有载Q值。
A trial multilayer one-port microwave resonator with loaded Q value more than 200, center frequency at 1.8 GHz was accomplished by microwave ceramic with high permittivity and low sintering temperature. 用多层陶瓷工艺技术、高介电常数和低温烧结微波陶瓷实现了中心频率为1.8GHz、有载品质因数大于200的试验单端口多层微波谐振器。
And the design of the oscillator is given on the basis of loaded Q. The phase noise of the circuit is simulated by the software-based method of harmonic balance. 并从振荡器有载Q值最大化出发进行了振荡器理论设计,然后通过基于软件的谐波平衡方法对此电路进行相位噪声仿真。