Recommend me a beginner's book about RF

Pozar's "Microwave Engineering".

If you are already familiar with electromagnetics, then the book mentioned above by Pozar is good. If not, get an electromagnetics book to start with. If you have a strong physics background start with an electrodynamics book.

The Pozar book is about microwave. If you need RF search this site. There were a lot of such topics and you will find what you need.

strt with boooks like simon haykin,then proceed to liao and proakis

Added after 1 minutes:

u also have to have brief of antennas and electromagnetics frm sadiku

microwave engineering & Microwave and RF design of wireless systems both by Pozar[/quote]

There are lot of posts on this topic in this forum
And lot of book suggestions
please search & go through it

RF circuit design by Chris Bowick.
It's cheap and easy to read, basic and practical. You can also use google !
Good luck