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您好,我是ADS的新手,我正在尝试使用它来评估第三人设计的RF电路的响应。
基本上我有设计,我已经添加了我的时域源,我已经配置了从我以前在matlab中生成的数据集中检索信号。 我要做的是测量功率放大器的输出电压。 我的时域源读取的数据是复杂的基带信号,我用600 MHz采样,并且我正在输入IQ调制器(调谐)以在900 MHz的载波频率下混合它们。 我会发现在时域中更容易运行模拟,但不幸的是,只要我通过信封模拟它,电路的一部分就可以传送数据。 现在我的问题是,当我简单地将电路的一部分用于为我的PA产生RF信号时,如果我尝试读取基带波形,或者还输出RF信号,我看不到我所期望的。 如何从此表示中获得正常波形? (实际信号,因为我和Q分开喂养)。 第二个问题是关于源,我在帮助页面上看到包络模拟可以使用时间和频率源,所以在这种情况下,如果我使用电压定时源,它是否正常? 任何好的提示将非常感激。 BR,Giovanni 以上来自于谷歌翻译 以下为原文 Hello, I am completely new to ADS, and I am trying to use it in order to evaluate the response of an RF circuit designed by a third person. Basically I have the design, and I have added my time domain sources which I have already configured to retrieve signals from a dataset that I have previously generated in MATLAB. What I am trying to do, is to measure the output voltage of a power amplifier. The data read by my time domain sources are complex baseband signals, which I have sampled with 600 MHz, and that I am feeding into an IQ modulator (tuned) to mix them at a carrier frequency of 900 MHz. I would have found easier to run the simulation in time domain, but unfortunately a part of the circuit can deliver data just if I simulate it by the envelope. Now my problem is that, when I simply take the part of the circuit generating the RF signal for my PA, if I try to read the baseband waverform, or also output RF signal I don´t see exactly what I would expect. How can I get from this representation to my normal waveforms? (real signals since I and Q are feeded separately). The second question is about the sources, I have read on the help page that the envelope simulation can use both time and frequency sources, so in this case is it alright if I am using the voltage timed source? Any good tip will be very appreciated. BR, Giovanni |
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6个回答
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您好,我发现我的问题可能只是混音器组件不适用于电路包络模拟器。
为了精确,我正在谈论IQ_ModTuned,它在我进行瞬态模拟时正常工作。 是否有任何其他组件可以在电路封套模拟中使用而不是这个以获得我的结果? 以上来自于谷歌翻译 以下为原文 Hello again, I have found out that my problem might just be that the mixer component doesn´t work for the circuit envelope simulator. To be preciser I am talking about the IQ_ModTuned, which is working correctly just when I do a transient simulation. Is there any other component that I could use instead of this one inside a circuit envelope simulaiton to obtain my result? |
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您好aehoward,首先我要感谢您的快速回答。 好吧,我只是这么说,因为很明显,当我模拟输出波形时,我没有得到我所期望的。 我现在已经尝试将混音器再次包含在我的模拟中,现在我看到信号对应(中间的某个幅度常数因子的一部分......)到我的信号。 唯一的问题是我使用了3.3秒的信号,而且我现在正在运行模拟,但我得到的结果只是我期望的一小部分。 例如,根据ADS,模拟在大约260毫秒结束。 当我查看波形并将其与我期望的波形进行比较时,我看到我看到的信号部分实际上是原始信号的500毫秒,但仍然ADS以错误的方式引用X轴(有 几乎是因素2之间)。 除此之外,我的模拟数据仍然不完整。 在使用电路包络模拟时,我应该注意一些特别的东西吗? 我必须说,当我只是尝试瞬态仿真时,一切正常,我在IQ调制器的输出端看到了完整的波形。 关于模拟结束实际取决于什么? 以上来自于谷歌翻译 以下为原文 Hello aehoward, in first place I would like to thank you for your quick answer. Well I was just saying this because appearantly, when I simulated the output waveform I didn´t get exactly what I expected. I have tried right now to include the mixer again inside my simulation, and now I see that the signal corresponds (a part of some amplitude constant factor in the middlle....) to my signal. The only issue is that I am using 3.3 useconds of signal, and I run the simulation exactly for this time, but I get as a result just a smaller part of what I would expect. For instance, according to ADS the simulation end at about 260 nseconds. When I look at the waveform and I compare it to the one I would expect, I see that the part of the signal I see is actually 500 nseconds of my original signal, but still ADS quotes the X axis in a wrong way (there is almost a factor 2 in between). In addition to that my simulation data are still not complete. Is there something particular I should be aware of when using the circuit envelope simulation? I must say that when I was just trying the transient simulation, everything worked fine and I saw my complete waveform at the output of th IQ modulator. On what does the end of the simulation actually depends? |
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***5 发表于 2018-11-14 08:35 您好,我对此一无所知,但我打算四处询问。 我认为这里的问题是我们是一所大学,所以我真的不知道是否与许可证一起,我们有类似的东西。 我会在今天检查,我会告诉你的。 BR,Giovanni 以上来自于谷歌翻译 以下为原文 Hello, I dont´t know anything about this, but I am going to ask around. The issue here I think is that we are a University, so I don´t really know if together with the licenses we have something like that included. I will check during today, and I will let you know. BR, Giovanni |
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wslyx 发表于 2018-11-14 07:45 测试 以上来自于谷歌翻译 以下为原文 test |
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