压控振荡器如何设置Kv

嗨，我正在尝试模拟一个VCO，它需要一个具有5 - 9V * * DC电压的斜坡发生器的输入，并输出* 2 - 4 GHz *。
我希望斜坡发生器*上升时间为10毫秒*。
1）我不确定如何设置Kv（VCO Hz / Volt的调谐灵敏度），以便提供结果。
我的理解是：调谐电压范围= 4V带宽= 2 GHz * Kv * = 2GHz / 4V = 500 MHz 2）在模拟中，如果我放大到Vosc_out，在某些时候有空格，振荡不会
看起来随着时间的增加而增加......？
3）是否可以获得振荡输出频率与调谐电压（V_ramp）图？
如何做呢？
否则，如何确定振荡频率，我不认为测量振荡周期的峰值是正确的，因为周期随时间不断变化...请参阅附件中的数字。
非常感谢你的帮助，编辑：Vivian于2014年6月10日下午12:17



     以下为原文

  Hi,

I'm trying to simulate a VCO such that it takes an input from a ramp generator with a *DC voltage of 5 - 9V*, and outputs *2 - 4 GHz*.  
I want the ramp generator *rise time to be 10 msec*.  

1) I'm not sure how to set the Kv (tuning sensitivity of the VCO Hz/Volt) such that it will provide the result.  
What I understand is:
tuning voltage range = 4V
bandwidth = 2 GHz
*Kv*=2GHz/4V = 500 MHz

2) In the simulation, if I zoom in to the Vosc_out, there are spaces at certain times, the oscillation doesn't look like its increasing as time increases...?  

3) Is it possible to get a oscillation output frequency versus tuning voltage (V_ramp) graph? How can it be done? Otherwise, how can the oscillation frequency be determined, I don't think measuring the peaks for the oscillation period is correct as the period is constantly changing across time...  

Please see attached file for figures.

Thank you very much for your help,

Edited by: Vivian on Jun 10, 2014 12:17 PM   
附件

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