This is not something where you just find an equation, plug in a few numbers, and you are done. Based on your requirements you'd select an architecture, and specific information on your requirements will allow you to set requirements for the components that make up the transmitter in the architecture. You might need to evaluate multiple architectures because there are often many ways to design a given system. And all of this is traded off against other requirements such as cost, size, weight, and component availability and lead time.
Your requirements are not well enough established to create a design. "Reliable output" is a vague description with no specific meaning.
For example you'll want to know the following:
This is a good book which should help you: https://www.amazon.com/Microelectronics-Communications-Engineering-Technologies-Rappaport/dp/0137134738
RF Microelectronics by Razavi is very, very good. It was recommended in my RF IC seminar and I found it very helpful.
Well I'm more of antenna engineer, but the jobs I've applied to have demanded a lot of RF/analog experience as well. For antennas the hands-down best site is antenna-theory.com. You probably don't need the antenna stuff, but there is a lot of basic smith chart and matching material.
microwaves101 is alright as well, but it's more of an encyclopedia. Good for if there is something specific you forget and want to quickly look it up.
The next best thing is probably your course notes (if you still have them). Basic transistor, smith chart, microwave theory, system level circuit analysis (others have mentioned the good stuff to study).
The next thing I would suggest is the first chapter or two of many textbooks. Behzad Razavi's RF Microelectronics has a great first couple chapters on RF system parameters (noise, linearity, architectures) so if you read them over a week you would probably be in good shape. All depends on how much time you have.