Fabry-perot cavity antennas

Fabry-Perot Cavity Antennas (FPAs) are a type of highly directive planar antennas that offer a promising alternative to standard planar microstrip patch arrays or waveguide slot array antennas. They offer significant advantages in terms of low fabrication complexity, particularly at mm wave frequencies, high radiation efficiency, and good radiation pattern performance. These advantages, in conjunction with a renewed interest in periodic surfaces and meta-surfaces, led to a reinvigoration of international research on this antenna type. This chapter reports recent advances on the design and implementation of FPAs at mm-wave bands. The main concept of FPAs, their operating principles and analysis approaches are briefly introduced. The basic types of FPAs are summarized following a historical account of various implementations until recent years. The main body of this chapter provides an overview of recent designs with a main focus on mm-wave bands and the advantages of the reported antennas for high-frequency implementations.