ABSTRACT
This chapter describes the design methodology of the normal microstrip antenna arrays. The digital beamforming microstrip antenna array takes advantage of doing that, because it is exempted from the radio frequency feed network, providing plenty of space. A microstrip array can be designed in either a single-layer or multilayer configuration. In designing a wide-angle scanned microstrip phased array, substrate thickness, dielectric constant, and element spacing are all important parameters that need to be considered for reducing mutual coupling effects and avoiding scan blindness. The estimation of spurious radiation from microstrip lines has been done by using the full wave analysis. In addition, when the probe diameter is larger than the width (W) of the feed line connected to it, a pad has been placed to insure good welding of the probe to the microstrip line. One of the most basic configurations for a microstrip antenna is a resonant rectangular patch which has resonant length and W.
