高功率脉冲/硬件门控求指导

根据您的路径损耗，您可能甚至不需要硬件门控，PNA中的脉冲选项通常就足够了。
你在测量什么（RCS？），你想要应用于你的Tx天线的功率是多少，天线之间的隔离是什么？路径损耗是多少？
我们在接收器前没有硬件门控，因此如果需要，您可能需要添加一个开关。
我们确实有IF门控，因此您可以精确选择要测试的脉冲部分，分辨率为10纳秒。
您可以使用选项025创建外部脉冲以发送到Rx开关，您不需要Tx调制器，因为源的内部调制将提供该功能。



     以下为原文

  Depending upon your path loss, you might not even need to have hardware gating, and the pulse option in the PNA is often sufficient.

What are you measuring (RCS?), what is the power you want to apply to your Tx antenna, and what is the isolation between antennas and what is the path loss?

We don't have hardware gating in front of the receivers, so you might need to add a switch if that is needed.

We do have IF gating, so you can select precisely the portion of the pulse to test, to resolution of 10 nsec.

You can use the option 025 to create external pulses to send to your Rx switch, you don't need a Tx modulator as the internal modulation of the source will provide that capability.

Tx Power @ Antenna：53dBm，互耦：路径损耗单向：75-80dB Ant增益：15dBi，我们仅在S波段工作这只是研究工作，不需要高精度。
请告诉我有关相关文件/应用说明或告诉我执行此操作的步骤。



     以下为原文

  Tx Power @ Antenna: 53dBm , 
Mutual Coupling : <- 50dB  ,
Path loss one way:  75-80dB
Ant Gain: 15dBi, We are working in  S-Band only
This is research effort only, high accuracy is not required. 
Please tell me about related documents /app notes  or tell me steps to perform this.

在你的情况下，如果我理解正确，则不需要Receiver选通。
您的放大器距离为+53 dBm，天线之间的隔离度为50 dB，因此端口2的最大功率为+3 dBm。
PNA的最大工作输入约为+13 dBm（我建议将其保持在+10 dBm）。
对于初始测试，我可能会建议在端口2输入端添加一个30 dB的焊盘，以确保在最坏的情况下将端口1挂接到端口2时，小于+30 dBm。但是在确定连接正确且功率水平之后
在端口2正确，你可以删除垫。
你需要放大器是否有脉冲？
如果是这样，请使用008设置脉冲测量。
您需要填充R通道输入（确保使用路径配置对话框将R通道设置为外部路径），以将小于-5 dBm应用于R通道外部输入。
你会进行扫描频率测量，或近场测量或RCS吗？
我不是RCS的专家，因此无法真正帮助您了解这方面的细节。
如果您需要更多帮助来设置测量值，我建议您联系当地的Keysight应用工程师。
有时通过电子邮件或论坛设置复杂的测量值有点困难。



     以下为原文

  In such a case as yours, Receiver gating is not needed, if I understand correctly.  

You have +53 dBm from your amplifier, and the isolation is 50 dB between antennas, so max power into port 2 will be +3 dBm.  The max operational input for PNA is about +13 dBm (I recommend to keep it to +10 dBm). For you initial tests, I might recommend adding a 30 dB pad to the port 2 input to ensure less than +30 dBm in the worst case that you accidentally hook port 1 to port 2.  But after you are sure connections are correct and power levels are correct at the port 2, you can remove the pad.

Do you require the amplifier be pulsed? If so, use 008 to setup the pulsed measurement.  You will need to pad down the R-channel input (be sure to use Path Configuration Dialog to set the R-channel to the external path) to have less than -5 dBm applied to the R-channel external input.  Will you be doing swept freq measurements, or near field, or RCS?  I'm not an expert on RCS, so can't really help you with the details of that aspect.

If you need more help setting up the measurements, I recommend contacting your local Keysight application engineer. Sometimes setting up complicated measurements is a little difficult to do over email or the Forum.

非常感谢你的帖子。
我将通过025生成脉冲并按照您的建议在接收器处切换HW门控。编辑：zubair_rafiq于2015年10月11日凌晨3:15



     以下为原文

  Thank you very much for your post. I will generate pulse via 025  and give to switch at receiver for HW gating as you suggested.

Edited by: zubair_rafiq on Oct 11, 2015 3:15 AM