Another excellent video!

@BhargavaAnurag

3 жыл бұрын

Thanks Bro, I am glad you found it helpful.

Thank you so much for these excellent tutorials! Would love to learn how to design an oscillator from you!

@BhargavaAnurag

3 жыл бұрын

Its in my to-do list but not in near future though...😊

Excellent Explanation!!.

@BhargavaAnurag

3 жыл бұрын

Thanks Ravi, I am glad you liked it.

Thank you so much sir. These video tutorials helped me to design my L -Band power amplifier works.

@BhargavaAnurag

10 ай бұрын

Glad to hear that. Best of luck for your future designs.

Always on your excellence

@BhargavaAnurag

3 жыл бұрын

Thanks for your kind comments Adnan. Hope this will be of your help.

very complex analysis and excellent presentation

@BhargavaAnurag

Жыл бұрын

Glad you liked it!

Thanks for this video

@BhargavaAnurag

3 жыл бұрын

Most welcome

Thank you for an excellent series! I have a question about the CTS result. I've used your archive as-is, but am using ADS 2022U1 and Cree V16. The Cree models seem appropriate as your power, gain, efficiency results in the video are similar to what I simulate. But in the CTS result, the non-linear portion (Spec_NonLin_Distortion) has an ear (peak) at the left edge of the signal bandwidth. I've used Tstop=0.1ms, rate 245.76MHz, sig length=10usec. I've tried other signal lengths, not knowing if the signal is fully allocated ( 3276 carriers vs. 1000 in the video) but still get the ear. The only other appropriate dial to turn seems to be Tstop, which when increased to 1ms eliminates the ear. Was this the right thing to do?

@BhargavaAnurag

Жыл бұрын

Hi, Its kind of difficult to support this kind of query as it will require looking at your simulation setup etc. Kindly contact your local/regional Keysight tech support team for assistance.

Hi, thanks for the great video. I noticed that you first had ACLR in dB (positive values) when you first ran VTB (15:45). After running DPD (50:45), you showed ACLR in dBc (negative values). Are they pretty much the same except that they are off by a negative sign?

@BhargavaAnurag

3 жыл бұрын

Yes, they are same. Whether you represent it with negative sign or not is your choice.

super excellent thanks a lot

@BhargavaAnurag

2 жыл бұрын

You are most welcome

Thank you for sharing this excellent video. I used level 3 for FCE DPD simulation with 5G NR DL signal. I realized that the simulation time is extremely long. I'm simulating multi-stage PA with die/MCM level EM blocks in my circuit. Do you think EM blocks are the main reason for the slow simulation?

@BhargavaAnurag

3 жыл бұрын

Hi Josh, Thanks for liking the video and glad to know it was of some help. I am not sure how slow is slow but for a typical DPD analysis it is a 2 step process, one for extraction and 2nd for application and it is typically 15-20 mins after the FCE3 is extracted for 100MHz, Oversampling ratio=4. These are initial comments and I would recommend you to contact Keysight tech support for further help.

Thanks for the great content!! Would you be able to point to any of Keysight's videos on Doherty Power amplifier designs?

@BhargavaAnurag

2 жыл бұрын

Hi Aparna, I am not aware of any videos on Doherty PA design from Keysight but there are few documents on Keysight Knowledge Center (KC), you can search required documents/examples using your keywords on KC portal.

@aparnadr2189

2 жыл бұрын

@@BhargavaAnurag Many Thanks!

Thank you so much for your instructive videos! At minute 38, you're talking about the signal file that can be used for modulation in the P_1tone source. I was wondering how I can get/create/download such a file? I have never simulated modulation, so any advice would be highly appreciated. Some other questions: In the Fast Envelope Demo, for the P_1Tone source, why you are adding 10dBm to the P_RF_dBm? The value of P_RF_dBm is the value of input power in which the power amplifier is in the linear region (maybe upto1dB compression point)? How do you calculate the sample rate? Thanks.

@BhargavaAnurag

3 жыл бұрын

You can refer to ADS documentation which explains the file format and actually its quite simple and you can generate this kind of waveform files very easily using any programing language such as C or Matlab etc, just simply use QPSK waveform to be exported into the file format recommended in the ADS manual and you can read it in just to plot in ADS and then use it as an excitation to your circuit. Another alternative is to use only VTB component in your schematic and export the waveform into a file and use it in P_1Tone source. Hope this helps....

@behnooshmeskoob1003

3 жыл бұрын

@@BhargavaAnurag Thanks a lot for the instruction. I will try both solutions. Would you please explain about adding 10 dBm to the P_RF_dBm?

@BhargavaAnurag

3 жыл бұрын

Don't worry about that too much, I was just playing with the variable to get right input power level....😊

@behnooshmeskoob1003

3 жыл бұрын

@@BhargavaAnurag Thanks :)

Hi, very useful video, really appreciate it! Could you kindly explain the SystemVue license should be used if using VTB method ? I have ADS here but no SystemVue installed and I can't run VTB simulation...

@BhargavaAnurag

Жыл бұрын

Hi, VTB needs to be downloaded and installed. You don't need to install SVue separately. Kindly download the VTB from the ADS download page. If you need more help then contact your local Keysight tech support team

Could you please post detailed videos on envelop & transient simulation like you did in the case of HB? Is it possible to show AM-AM and AM-PM conversion? Any documents/references for the theory part you covered here as few things went above head?

@BhargavaAnurag

3 жыл бұрын

I will have videos to cover Envelope and Transient later. AM-AM & AM-PM is nothing great if you are doing power sweet HB and you just need to plot gain & output phase vs. input power. AM-AM, AM-PM was also shown in the DPD analysis. Not sure which part/topic went above head for you....😊

Thank you for your useful videos and excellent explanation. I have a problem that I would like you to help me solve, which is that when running a DPD simulation, the simulation stops suddenly in the second stage (operation=1) at about 25% of the simulation. I tried to repeat the simulation many times and the same problem occurs, and every time a message appears: “The simulation failed unexpectedly” or the ADS program closes. Is it possible to perform a DPD analysis on two separate simulation operations, first putting 0 in operation and then resimlate by putting 1 in operation instead of using parameter_sweep?

@BhargavaAnurag

9 ай бұрын

Yes, you can disable the parameter sweep and configure the variable to 0 or 1 based on your need. The error message indicates convergence problem and I would recommend you to contact your local Keysight tech support team for help.

awesome video, one question, how do I know th range dbm power to make the transitor work?

@BhargavaAnurag

Жыл бұрын

You can refer to the device datasheet

Thank you so much for these excellent tutorials. Is it possible to put the design schematics for download, please? I am a student and my university purchase ADS, in this regard is it possible to download the schematic design from keysight website?

@BhargavaAnurag

3 жыл бұрын

If your university has ADS license and active support contract, you can make your account on Keysight Knowledge Center using the HOSTID on which license was issued. Once done, download the ADS workspace from: edadocs.software.keysight.com/pages/viewpage.action?pageId=652387041

@mohammadrezarahimi1431

3 жыл бұрын

@@BhargavaAnurag Thanks a lot for your quick reply and comprehensive answere.

Thank you for sharing this excellent video, Could you tell me what's the relationship between the P1Tone's power level and the output spectrum power level? The output Spectrum power level is the original modulated signal's power?

@BhargavaAnurag

Жыл бұрын

P_1Tone is the input signal level and output spectrum power level is the output of your amplifier or circuit whatever you may be analyzing and it obviously will be more of less depending on what kind of circuit you are designing. However in the output you will need to integrate the power in the required bandwidth to see the actual power level else only average power will be shown as the energy is scattered over the bandwidth of the signal.

@wangfrank8512

Жыл бұрын

@@BhargavaAnurag Thanks !

I think LTCC is the only technology you have not yet touched on. Would love to learn it from you

@BhargavaAnurag

3 жыл бұрын

Its in my to-do list and cover that some time in near future but not in next 1-2 months.

Hi friend 👋 Thank you for so informative videos. My question: I have low power amplifier and the output shape is gaussian. The problem with bust of pulses I have droop issue! Can you show me what should I look at for the droop issue? Thank you for help.

@BhargavaAnurag

Жыл бұрын

Please contact Keysight Tech support team for help

@kamalibrahim7322

Жыл бұрын

@@BhargavaAnurag Will do and you for the reply. I appreciate it.

Can you please share the FR1_100MQPSK_SV.txt file because I cannot create it and I just want to run a simple simulation in order to see only the evm?

Hello sir , where are measured load pull we measured at transistor or at amplifier when we design apower amplifier

@BhargavaAnurag

3 жыл бұрын

Sorry, I didn't understand your question. Kindly ask again with proper clarity

@zaramlslamalislam4614

3 жыл бұрын

@@BhargavaAnurag I want design a power amplifier class E ، How to start designing What is the first step after selecting a transistor ،I don't understand load pull step

Very helpful. Sir can you please guide me regarding how to import System vue file into ADS. If its possible, pleas share the method.

@BhargavaAnurag

3 жыл бұрын

Hi Ali, I couldn't understand the purpose of bringing SVue files into ADS. Kindly give me the full context of what you are trying to do so that I can provide comments accordingly.

@aaliz110

3 жыл бұрын

@@BhargavaAnurag Sir ,I have to simulate a layout with transistor whose library was not available in ADS but in System Vue, so I need help if I can import it or not.

@BhargavaAnurag

3 жыл бұрын

@@aaliz110 SystemVue doesn't do any layout or layout simulation and that doesn't have any transistor library as well. There are library for amplifier models and largely most of them would be S-Parameter based so I don't see any value. You can simply get the S-Parameter for the amplifier from vendor website and do everything in ADS itself. What is the part number and company you are referring to?

@aaliz110

3 жыл бұрын

Transistor was provided by the vendor, only available in system vue.

@BhargavaAnurag

3 жыл бұрын

@@aaliz110 Kindly tell me the part number and company please. Let me check and let you know my findings