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genesys .s2p simulation
Hi
I have been trying to simulate an interdigital filter with the LNA (using the s2p files for the component) attached to it. The linear simulation looks reasonably good but when it comes to the EMPower simulation things don’t go as well.
I've sort of figured out why...
Hello,
I've sort of figured out why EMPower simulation is not as good as the linear one when the LNA is connected to it. When i connect up the LNA in the schematic and optimize it, the circuit is optimised for the scenario when the LNA is connected. But since the LNA is invisible to EMPower...
pizza oven pcb soldering
Hi,
Thanks for that. It certainly gave me an idea of how it could be done, although I dont know if we have the hot air station here and the cost of the IC (US$100+) makes me hesitant to try something like that out without any experience, but I will definitely keep it...
lp3 package
Hi All.
Im working on a circuit that requires an LNA. The LNA im looking at is a 3 x 3 mm QUAD FLATPACK NO-LEAD (QFN) PLASTIC PACKAGE.
https://www.hittite.com/content/documents/data_sheet/hmc548lp3.pdf
I assume there wont be any legs on the component to solder it on to the PCB...
Hi
I have been trying to simulate an interdigital filter with the LNA attached to it. The linear simulation looks reasonably good but when it comes to the EMPower simulation things don’t go as well. Im not too sure why this is happening. Does EMPower account for the LNA attached to the filter...
Hi there,
I need to design a QPSK and QAM receiver in Simulink based on the provided transmitter design. It is meant to simulate transmission of data through a wireless channel. In this case an image is the data to be transmitted and my receiver has to receive the data with the highest possible...
Many thanks for that. Im not so sure what u mean when u say that i cannot have the opimizing goals set your way when having two amplifers, as the gain will be so much higher, this is true also in the stopband. The circuit will collapse during optimization.
How do you get the response of the...
Hi All,
Im designing a circuit in Genesys. The main component of this circuit will be the Hittite HMC548LP3 LNA. The data sheet for the component is below:
https://www.hittite.com/content/documents/data_sheet/hmc548lp3.pdf
The problem i am facing now is getting the layout footprint for the...
Hello again,
It is interesting how you seem to get a high pass response with my filter as I have actually manufactured this filter already and the bench test still gives me a band pass response albeit with slightly higher return loss compared to the simulation. I'm not sure why this is...
Hi,
I tried using the datafile instead of dataset option to upload the LNA S-parameter files but i still get the same response for my filter. The bandwidth of 100 MHz becomes really narrow so that it only focuses on the center frequency. I even tried uploading the file under the parameter...
Hi again,
I tried to simulate the filter along with the LNA S-parameter files using the way you suggested. When i do that though my filter's bandwith narrows dramatically. I'm not sure if this is due to matching or some other factor. I also tried implementing a matching circuit using the MATCH...
Hi again,
I see what you mean by the matching circuits now. I have had a look at the s-parameter file for the LNA and in it the manipulating variable is the frequency while the dependent ones are the s-parameters and something called YP, im unsure if this is the admittance, in which case it...
Thanks for your input as usual. When u say matching, do you mean all the signal lines should be 50ohms. This is already the case in my filter and the LNA specs say the same thing as well. In terms of keeping the transmission lines as short as possible, I'm in a bit of a fix as the LNA package is...
Hello again,
I'm at the stage where i want to integrate my filter together with an LNA. This is going to be used at the receiver end of a ground station for a student satellite project. The LNA+filter will be connected to the satellite dish and it is meant to filter a certain frequency range...
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