An update on microstrip antenna theory and design including some novel feeding techniques

This article will review the development of microstrip antennas and arrays. Early design and analysis work will be discussed, along with the advantages and limitations of microstrip antennas. Characteristics such as bandwidth, mutual coupling, and polarization will be addressed, and some of the recent work related to these characteristics will be noted. The current state of analytical techniques will be discussed, as will the concepts of a monolithic phased array. Finally, some new ways of feeding microstrip antennas will be presented.