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Yes there's two that look to be just your standard TE10 waveguide mode just once each side length of the port is large enough to support it. This will be excited by a TEM mode from a coax I just didn't want to have to simulate that.
Thank you!
I need to simulate a microstrip to microstrip (different substrates) transitions which lie inside a metal cavity.
See (b)
[found at mwrf . com / site-files / mwrf .com /files /archive /mwrf .com /Files /30 /19725 /fig_02 .gif]
The cavity cross-section is about a square.
When I simulate...
Sorry to reply to this, can't seem to edit my post but I wanted to mark this as "Solved" and say what fixed it so if anyone else uses simulink for something like this.
Answer: I'm using simulink in "Frame Based" mode. So Simulink will break data up into "arrays" of data MxN long where M is the...
I have a simulink model (using Comm. Toolbox / DSP blocks) I have built that will do QAM modulation just fine with pulse-shaping (using Root-Raised Cosine Filter). I'm trying to get a Baseband signal to RF for time-domain analysis for a RF PA.
I need an LTE like signal with a high PAPR. So I am...
Hi,
I'm having difficulty verifying my test for measuring Noise Figure of an assembly using a spectrum analyzer set for noise spectral density. Essentially I'm trying to measure noise figure by loading the input to 50ohms, having the device on (with LOs) and measuring the NSD at the output. I...
In #2 they may be discussing this IM3 at the input.
For example,
OIP3 = Pout + (Pout - Po,IM3)/2
Pout = G + Pin
Po,IM3 = G + Pi,IM3
OIP3 = IIP3 +G
therefore,
IIP3 + G = Pin + G + (Pin + G - P,IM3 - G)/2
IIP3 = Pin + (Pin - Pi,IM3)/2
where (Pin - Pi,IM3) = (Pout - Po,IM3). Theoretically...
Make sure your calculations are all correct. Cutoff of waveguide, size of waveguide and coax, impedance match between coax and waveguide, and correct port renormalization for your system's impedance you are using.
From the picture do you have an outer conductor for your coax? Almost looks like...
If you just have a substrate and no housing you can select the bottom fact (press 'f') of the substrate and assign it as a PEC (with the option of assuming it is an infinite ground plane) or with material properties as Finite Conductivity and input the conductivity or assign from material...
Assuming your doing a PWB/PCB design it will depend on a number of factors.
What kind of isolation do you want between the paths/sources? 70dB, 80dB, 90dB, 100dB... The more isolation the harder it will be as different sources of RF crosstalk will rise. Then you will have to figure out where...
If you are asking you probably won't be able to get these parts easily or have access to them. If you have to develop this your company then they should have all the info you need to source your parts. Or at least give recommendations where to look.
Space parts go through lots of research...
I'm sure others here will have a better way but you could use active (or passive if signal is strong enough) filters. LPF to FcLow which feeds into red led, HPF with FcHigh which feeds to blue and then a BPF which has cutoff of FcLow and FcHigh which feeds to green.
You would need a 2x resistor...
I have a cavity that has two separate microstrip input/output paths (2 in - 2 out) and I want to make sure there is enough isolation between the two RF paths. They are not connected physcially and are not supposed to be coupled to one another.
Currently I'm using a Driven Terminal, Network...
Ya, like JohnJoe said it will be easier with a schematic and larger picture.
Also here's a tip that may help in the future. I've used PCB Artist by Advanced Circuits and if you create a schematic and move to layout you'll know immediately if it's the same or wrong. There's a design...
Simulating a circuit will resolve a lot of headaches when attempting to build it.
For example if building a regulator or a filter you can be sure that over any temp/tolerance variations your circuit will work as expected or within your own specs. Like Audioguru mentioned students, including I...
Simplest and most straight forward explanation would be to replace the MOSFET with it's small-signal model (Pi-Model Preferably). If you just want DC gain then treat all caps (Cgs, Cgd, Csb, Cdb) as open circuits. Now you would sum currents at nodes until you have enough equations with enough...
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