# Search results

1. ### ADS power calculation in EM-Model

Hi, I have some questions about an EM-Model in ADS. I simulated a PCB with 3 differential ports and two ports to ground. After that, I inserted that model to my schematic, placed some components (s-parameter container of real measurements) and want to measure power, current and voltage between...

Hi, I measured a blackbox at one frequency and many different states (with a network analyzer). With the resulting S-Parameters (for every single state), i can describe this blackbox. The parameters of interest are only the input reflections (S11). Here is an example of the measurements -...
3. ### [SOLVED] SmithChart Fundamentals

Thank you very much! That was what im looking for!
4. ### [SOLVED] SmithChart Fundamentals

But that what I say: you need the absolute value of S11 and the angle to draw it in the smith chart. it is no problem to calculate them with real and imaginary part of S11. for your example: |r| = sqrt(.707^2+.707^2) = 1 phi = arctan(.707/.707) * 180/pi = 45 An other possibility is to convert...
5. ### [SOLVED] SmithChart Fundamentals

Good morning FvM, I got only the real -and imaginary part of the s-parameter. They could be in a range of -1 and 1 and if I got no reflections at the output of my network (50 ohm termination), S11 and the reflection coefficient is the same. How is it possible to plot S11 in a smith chart (with...
6. ### [SOLVED] SmithChart Fundamentals

Hi, I got a question about simple smith chart basic: Szenario: I got the s-parameters of a network at only one frequency. The s-parameters are splitted into real -and imaginary part and measured with a network analyzer (50 Ohm termination). The parameter of interest is only S11. I want to plot...
7. ### Area Pin in momentum Simulation - ADS

okay thank you. is it important to choose the right order of the pins? you got pin2 at the end of the taper.. i found many examples with pin1 and pin2 at the beginning and end of the stripline, with the other pins in between.
8. ### Area Pin in momentum Simulation - ADS

Thank you for your answer! I found out, that there is an example of the different calibrations if you hold the mouse for some seconds at the calibration dropdown menu. There are some pictures for the corresponding setup. But what is the right way to simulate? In the my layout (nearly the same...
9. ### Area Pin in momentum Simulation - ADS

Hi, i want to simulate a PCB with area pins in ADS and found that article: https://muehlhaus.com/support/ads-application-notes/edge-area-pins I did exactly the same.. Unfortunately I got some warnings at momentum simulation. Here is my Layout with area pins at the input and output of the...
10. ### Converting series-through s-parameter measurements to shunt configuration (ADS)

Very impressive article, absolutely comprehensibly. Especially with the sketch! Thank you very much. That there are different locations in the smith chart is what I expected (on the basis of the different terminations). Apart from the real part (series R, okay negative... I would measure...
11. ### Advanced Design System - Stripline Calculation

Hi, I want to measure (with networkanalyzer) 3 inductors in series configuration. At first, I try to simulate the stripline just for one inductor.. In the s2p blocks are the files of the manufacturer (of the inductors i want to measure). Okay, the first picture in my last post was only a...
12. ### Advanced Design System - Stripline Calculation

mhmm.. okay. I think the length of the transmission line causes a rotation around the middle. how can I compensate this effect?
13. ### Advanced Design System - Stripline Calculation

Good morning Mr. Muehlhaus and thank you very much for your response. Okay, i'll start with only ground at the bottom layer. It was just a question if there are maybe some clear advantages with a ground plane at bottom and top compared to only ground at the bottom layer. Today, I started with...
14. ### Advanced Design System - Stripline Calculation

Hello, I try to design my second PCB with Keysight Advanced Design System (the first PCB was just a 50 ohm microstrip) and Im looking for a how-to or something else. The plan is to measure three components in series. Now, im looking for an idea to calculate the microstrip transmission lines...
15. ### Converting series-through s-parameter measurements to shunt configuration (ADS)

Thank you for your answer. Okay, I didn't know that it should be so easy to simulate a s2p file to ground if my DUT was measured with 50 ohm termination at both ports. But you can see, there is a big difference between the s2p simulation in series configuration (upper simulation in picture...
16. ### Converting series-through s-parameter measurements to shunt configuration (ADS)

Vielen Dank für Ihre Antwort Herr Dr. Mühlhaus! Okay, let's write in english again. But it's not really easy since I know, there is an other german who's answering to my questions. It's a pleasure to get help of an expert in ADS, thank you very much! At first: I designed a 50 Ohm stripline...
17. ### Converting series-through s-parameter measurements to shunt configuration (ADS)

Hi, I measured a voltage controlled capacitor with a network analyzer (NWA) in series-through configuration. That means: Port 1 of the NWA is connected with RF input of the capacitor, Port 2 accordingly with the output. For every capacitor bias voltage (1 V to 24 V with 0.1 V steps), i've got...