u/Lubravi

Hello, I would like to know if I can use FR4 for my RF power amplifier operating at a narrowband frequency of 805 MHz. I initially designed the amplifier using RO4350B, but few US manufacturers supply that substrate, and it is more expensive, even though it is the material used by the vendor of my BLP981 transistor. I know FR4 should work well at that operating frequency, but given that I am generating 100 W, I think that could pose a problem. Could I use FR4?

Hey everyone! I just got a dsPIC33CK Curiosity Nano board and I am looking for good learning resources to get started. Does anyone know of any courses on Udemy or other platforms?

https://preview.redd.it/oeinnjvfedlh1.png?width=256&format=png&auto=webp&s=c9d2aaa1526fdccff0a5a9c10b22c927b15de17f

I am looking to learn embedded systems and would like to start with a microcontroller that has good documentation and plenty of learning resources. Which one would you recommend for a beginner? I would also appreciate any recommendations for books or learning resources.

Hello!

I am trying to simulate the input matching network of the MRF13750H reference board (915 MHz) using Usimmics (I do not have ADS or AWR to open the models provided by NXP).

I am using microstrip lines with same width and length as those in NXP's 915 MHz design, but the results do not correspond to that frequency. Does anyone know what I might be doing wrong?

https://www.nxp.com/docs/en/data-sheet/MRF13750H.pdf

Simulation

MRF13750H - 915MhzRF Power Amplifier