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Resonator sensor is a totally different topic. Perhaps in the future, I will create a video for that.

The 2.4GHz is the frequency of operation. Or the frequency that the structure works at

Thanks for the comment and what a great question. I have not tried that actually. Maybe in the future, I will check that out.

Glad it helped!

Unfortunately, this software is not available for online usage. It must be downloaded and installed on a computer and also you need license to be able to use it

You can download the software from Keysight website and if you are student, you can use student license to use the software

Hi Giovanny, I'm glad that you liked the video. Usually there should be a minimum length for the TL. If the length of the TL is so short, probably you don't even need that TL. Or you can have the length of the TL a multiple of half of the wavelength to get the same impedance. In the ADS Tline tool, you can simply add 180 degrees to the length of the TL and you see the reflection coefficient rotates to where you started from. But I think there might be something wrong with the topology of the matching network that you chose for your PA that your design led to a very short TL. I hope my answer helped.

Hi Gustav, thank you for your good question. Usually the thickness of the metal sets by the PCB manufacturing standards. For example, if they provide 1oz copper (T=35um) or 2oz copper (T=70um). Therefore, follow the specification that is provided by the manufacturer and set the metal thickness based on that.

Hello Mahesh, Thank you for your question. The main reason for this shift is that the MLIN that is used in ADS is an ideal T-line model while the S2P file generated in HFSS is a realistic model that includes all the EM effects. But if we consider the values of S11 and S33 in dB, although there is about a 10dB difference at 2.4GHz, since the values are quite small (-35dB to -45dB), we can ignore that. Usually, it is better to tune the width and length of the transmission line such that the frequency of the notches matched with each other. Please let me know if you need more explanation.

Hi Hector, thanks for watching the video and your good questions. The 90 degrees is just an example and the reason that I used 90 is that most of the time we need to do impedance transformation using a quarter-wavelength line (90-degree line at the frequency of operation). But in general, the line can be designed using any values for the phase shift.

@@soroushmoallemi774 , thanks for the clarification.

Hi Benammar. Thanks for your great question. A quarter wave line determines the electrical length of the line, which has a direct relationship with the physical line length. Theoretically, the electrical phase shift of the line (theta), which is in this case pi/2 or 90 degrees, can be found according to the equation theta=(2*pi/lambda)*L, where lambda is the wave length, L is the physical length of the line, and pi=3.1415. About the width, it is determined by the line characteristic impedance and has nothing to do with the length of the transmission line. Please refer to: www.microwaves101.com/encyclopedias/microstrip for more information.