Multifunctional Reconfigurable Microelectro-mechanical Systems Integrated Antennas for Multiple Input Multiple Output Systems

Abstract

This chapter focuses on a new class of antenna, henceforth referred to as microelectromechanical systems (MEMS) integrated multifunctional reconfigurable antenna (MRA), which can be employed in many wireless systems applications. It discusses MRA concept. The chapter explains the radio frequency (RF) MEMS technology compatible with microwave laminates for constructing MRA systems. The key advantage of RF MEMS can be realized by system-level implementation through monolithic integration capability with other circuit components. The chapter presents the design, microfabrication, and results of two different RF MEMS integrated antennas. The first design is a multielement selection diversity antenna in which RF MEMS actuators are monolithically integrated with antenna feed lines to selectively route the RF feed signal. In the second design, RF MEMS actuators are integrated within the geometrical structure of the antenna to construct a multifunctional reconfigurable spiral antenna capable of dynamically changing its polarization between right-hand and left-hand circular polarizations.