The goal of this subject is to sum up and exploit our technique how to produce low phase noise wideband vcos , through investigating and studying the basic theory and recent research fruits , combining national condition , and produce our low phase noise wideband vcos . using high q components , such as : coaxial resonator , dielectric resonator , makes bandwidth of vco become narrower , so that recently common wideband vcos generally make inductor and capacitor ( lc ) as resonators , combining varactors with wide range tunable capacitance , and achieve the wideband 本课题旨在通过对低相噪宽带vco的基本原理、国内外在这方面的进展，结合国内的实际情况进行研究，总结和开发出自己的方法，形成自己的理论。并把它运用于实践，以制造出低相噪的宽带vco 。由于加入高q元件，如：同轴谐振器、介质谐振器等，会导致振荡器带宽比较窄，目前的宽带vco一般采用电感电容( lc )作为谐振元件，辅之以大变容范围的变容二极管，达到宽带的目的。
To give a introduction about the achievements of national center of laser technology , beijing polytchnic university ( nclt ) on the research referred to laser technology till now and some of them such as laser cladding , laser welding , laser cutting and the application of laser processing have been made their application in the enterprises of china 本文提出了一种保持变容二极管调频电路在高、低温环境下载频稳定的温度补偿方法,介绍了补偿方法的基本原理,给出了电路模型,通过实验对实际电路进行了分析与标定.该方法简洁实用,有很广的应用范围
