Antenna is a vital component in wireless application systems. With the rapid growth of the wireless mobile communication technology, the future technologies need a very small antenna and also the need of wide band antenna is increased to avoid using two antennas and to allow video, voice and data information to be transmitted. Micro strip patch antenna is promising to be a good candidate for the future technology. This book begins by introducing learners to the basic of antenna theory. Only the basic idea of antenna parameters are described here. This book will be a first choice of basic micro strip antenna designer. The author makes very effort to find out intuitive results from antenna simulation. Different antenna performance parameters are described with excellent illustrations and graphical results. This unique text is highly informative and easily accessible to learners.