Radio Transmitter Circuit Design

Discussion in 'Wireless & RF Design' started by viseth, Aug 18, 2010.

  1. viseth

    Thread Starter New Member

    Aug 18, 2010
    Hi guys. I am currently having a garage-door-opening-systems project. The project is about designing a radio transmitter and receiver circuit to open and close the garage door (prototype). Both circuits are provided but I have to choose the values for each component of the circuits and design the digital part of the transmitter circuit Manchester Encoder to encode my group number to be used as a key to open or close the garage door.

    I have no idea how to choose the value for each component of both circuits to achieve the reference values provided. What I can think of now is just try some value for each component in LTspice but it's like finding a needle in the sea. Are there some kind of ways or equations that we can use to choose the values to achieve the reference value? Please have a look at the attached files to get what I am talking about.