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I need some help to understand how the following circuit works.
I get that the MOSFET N when Vgs> Vgs_thereshold, Vdrain= Vs
But how does a MOSFET P works, in simplified words, as a switch?
And how this entire circuit work?
I can't get it simulating when using pulse signal and transient in...
I add a bigger schematic, in data items the EM simulation of 180 hybrid and mixer LPF filter.
I have build this mixer and measure it.
Return loss at IF: -5dB at RF=-13dB at LO -8dB, with LO 7dBm.
I'm not able to reproduce this values in simulation. Only LO matching, with the configuration as...
Hello I'm designing a 180 single balanced mixer. For up and downconversion.
I have a simulated design in ADS, but when I look at the matching as a downconverter, using LSSP I've got quite poor results.
Also, the LPF at IF, I desingned it without taking into account the matching at IF port, as...
Hello
I have a doubt and I don't find the answer. I will like to avoid trying as I lack of time, and diodes are very expensive.
I have a beam lead diode, very very small.I want to use it between two lines: A microstrip line, wich is much wider than the diode, and a waveguide. In this case...
I'm using a 180 º hybrid for downconversion. For up-conversion, is it possible to use the same hybrid? Or which parameters I should optimize for up conversion?
Thanks!
In your design go to Results>Solution Data. A window with differece tabs pop up. One tab is convergence.
There you can find Convergence, in my opinion is easy to look for the plot.
I have to say that in the Analysis Setup I always select : Options>Adaptative Options>Minimum Converged passes: 2...
If you don't kow very well how to use it, default mesh is a good option in my opinion.
Solution frequency is your frequency of interest, in your case 868MHz.
I have basic doubts about how to design a up conversion diode mixer. Which are the difference with designing a downconverter?
In a case of a single balanced mixer, using a 3 dB coupler, design could be depicted as (Hybrid, diodes, IF Filter):
While designing an up converter:
What should be...
Thanks for the help (and sorry for the delay on answering). Unfortunately, I continue to have problems to understand LSSP from ADS. I understand what is for, but no how to configure it en the case of a diode mixer.
If 2 Source Ports are needed, one in RF for sure, but the other, in LO or IF...
Thank you to all.
I post here my schematic and the diode model (SPICE model of the manufacturer).
I've already correct some errors, in assigning frequencies. Now it gives an output. But it's not what I was specting. An still it gives the message: "Port 1 has no power, spFreq at 2.4e10
Por 2 has...
Please, I need help. I've search in the internet and ADS manuals for info, but I don't know why I've got this error.
I'm doing a diode, I want to analyze LSSP parameteres of the diode.
RF=24.125 GHz
LO= 23.125 GHz
IF=1GHz
As in ADS example I connect in series a P_1Tone, wich is port 1 and RF...
I need to design a single balanced mixer at K band using shottky diodes.
I have find some available diodes, to use at this frequencies such as: Skyworks DMK2790
https://www.skyworksinc.com/uploads/documents/DMK2790_DMK2308_200660K.pdf
In the Data sheet there is a SPICE model parameter (Fig...
Hi, I'm very new, but please, I need some help
After designing with Design View of Mentor's an schematic, compiled with CDB, and no error appeared. I tried to open in PCB, from Design View, and directly from Expedition PCB, but the error
Job Wizard: Failed to copy all files appeared.
In...
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