是的 - 但有一点需要注意:VNA接收器不像扫描频谱分析仪接收器;
他们不是免费的。
因此,如果扫描一个寻找信号的跨度,除了信号本身之外,您还可能会看到信号的图像。
另一个值得关注的问题是,您必须确保设置开始/停止和点数,以便在您有兴趣测量的频率上有一个数据点。
由于标准VNA中使用的IF带宽滤波器的性质,与频谱分析仪不同,不能保证捕获落在跨度内的任何信号。
如果您要测量的信号的频率是完全已知的,那么使用PNA测量它们的最有效方法是设置一个段扫描,每个段中的1个点设置为感兴趣的频率。
这样,您就不必浪费任何时间在感兴趣的频率之间测量数据。
因为很多人都有这些形式的频谱分析仪类型测量应用并且想要使用他们的VNA,在我们的PNA-X网络分析仪系列中,我们实际上有一个测量应用程序,它基本上为您提供类似扫描的SA(无图像和使用
高斯分辨率带宽滤波器代替正常的VNA IFBW滤波器)在盒子中的测量和参考接收器上。
使用4端口PNA-X,就像在一个盒子里有4个频谱分析仪:-)
以上来自于谷歌翻译
以下为原文
Yes - but one word of caution: VNA receivers are not like swept Spectrum Analyzer receivers; they are not image free. so if you sweep a span looking for signals, you might also see images of the signals in addition to the signals themselves. Another point of concern is that you have to make sure that your start/stop and number of points are setup so that there is a data point at frequencies that you are interested in measuring. because of the nature of the IF Bandwidth filters used in a standard VNA, unlike a Spectrum Analyzer, it is not guaranteed that any signal falling within the span be captured. If the frequency of the signals that you want to measure are exactly known, then the most efficient way of measuring them with your PNA is to setup a segment sweep with 1 point in each segment set to the frequency of interest. This way you don't have to waste any time measuring data in between the frequencies of interest.
Because a lot of people have these forms of Spectrum Analyzer type measurement applications and want to use their VNAs, in our PNA-X line of Network Analyzers, we actually have a measurement application that gives you essentially an SA like sweep (image free and using Gaussian Resolution Bandwidth filters instead of the normal VNA IFBW filters) on the measurement and reference receivers in the box. With a 4-port PNA-X, that is like having 4 Spectrum Analyzers in one box :-)
是的 - 但有一点需要注意:VNA接收器不像扫描频谱分析仪接收器;
他们不是免费的。
因此,如果扫描一个寻找信号的跨度,除了信号本身之外,您还可能会看到信号的图像。
另一个值得关注的问题是,您必须确保设置开始/停止和点数,以便在您有兴趣测量的频率上有一个数据点。
由于标准VNA中使用的IF带宽滤波器的性质,与频谱分析仪不同,不能保证捕获落在跨度内的任何信号。
如果您要测量的信号的频率是完全已知的,那么使用PNA测量它们的最有效方法是设置一个段扫描,每个段中的1个点设置为感兴趣的频率。
这样,您就不必浪费任何时间在感兴趣的频率之间测量数据。
因为很多人都有这些形式的频谱分析仪类型测量应用并且想要使用他们的VNA,在我们的PNA-X网络分析仪系列中,我们实际上有一个测量应用程序,它基本上为您提供类似扫描的SA(无图像和使用
高斯分辨率带宽滤波器代替正常的VNA IFBW滤波器)在盒子中的测量和参考接收器上。
使用4端口PNA-X,就像在一个盒子里有4个频谱分析仪:-)
以上来自于谷歌翻译
以下为原文
Yes - but one word of caution: VNA receivers are not like swept Spectrum Analyzer receivers; they are not image free. so if you sweep a span looking for signals, you might also see images of the signals in addition to the signals themselves. Another point of concern is that you have to make sure that your start/stop and number of points are setup so that there is a data point at frequencies that you are interested in measuring. because of the nature of the IF Bandwidth filters used in a standard VNA, unlike a Spectrum Analyzer, it is not guaranteed that any signal falling within the span be captured. If the frequency of the signals that you want to measure are exactly known, then the most efficient way of measuring them with your PNA is to setup a segment sweep with 1 point in each segment set to the frequency of interest. This way you don't have to waste any time measuring data in between the frequencies of interest.
Because a lot of people have these forms of Spectrum Analyzer type measurement applications and want to use their VNAs, in our PNA-X line of Network Analyzers, we actually have a measurement application that gives you essentially an SA like sweep (image free and using Gaussian Resolution Bandwidth filters instead of the normal VNA IFBW filters) on the measurement and reference receivers in the box. With a 4-port PNA-X, that is like having 4 Spectrum Analyzers in one box :-)
举报