I'm designing the avionics portion of an ADS-B transponder and have everything done except the one thing I just can't figure out is decoding and encoding the baseband signal. I'm kind of under the gun to get things moving along for my senior design project so that's why I'm reaching out on here so forgive my ignorance. I have been spending a lot of time learning the ins and outs trying to understand but just hitting a wall.
Another person in my group is designing the RF portion and from what he says we got an RF LDMOS producing baseband signals and I have to generate a signal as well to go to it.
I'm using an ATSAM MCU and currently have the schematic made for ATSAMC21G but from what I've been looking at and asking on ATMEL community forums it might not be powerful enough and might have to use ATSAMD or ATSAME models for a bigger clock frequency. I have been looking over the data sheets and not sure if I need to tie this into the TC/TCC, USART, LIN, ADC, PWM, or something else. Once I know how to tie it all together I can get my PCB laid out and ordered. While I wait for that to be made I can figure out the code portion.
I again am sorry for being a newbie at this... my classes thus far have just been really basic MOFSET circuits so any help would be appreciated.