Antennas’ Figures of Merit

An antenna’s “figures of merit,” or “antenna parameters,” are all the objective, measurable characteristics of an antenna. These are the figures by which an engineer can judge the suitability of a particular antenna for any given application. An antenna’s figures of merit may include descriptions of its physical form, such as its dimensions or conformability, but more often we focus on the performance characteristics of the antenna, such as its radiation pattern, maximum gain, efficiency, frequency of operation, bandwidth, and input impedance, among others. For this course, we will be focusing on two major antenna parameters: antenna efficiency and antenna bandwidth. This course was developed by Kathryn Leigh Smith, Assistant Professor in the Department of Electrical and Computer Engineering at the University of North Carolina-Charlotte, in partnership with Ansys.

Recommended Courses

Wireless communication systems transmit information between two antennas: a send antenna and a receive antenna. This course will explore the basics of antenna-to-antenna communication systems, with an emphasis on understanding Frii’s Transmission equation, which is a basic formula for computing the output-to-input power ratio of a simple two-antenna system.

Antennas are engineered devices used to send and receive electromagnetic signals. Each antenna has a unique set of characteristics — frequency response, polarization, radiation pattern, etc. It is important to know the general characteristics of common antenna topologies in order to be able to choose the proper topology for any particular application. In this course, we will briefly introduce four common antenna topologies: horn antennas, Yagi-Uda antennas, slot antennas, and rectangular patch antennas