This example shows you how to create a custom slot cavity patch using custom antenna geometry and thick dielectric substrate. A double slot cavity patch consist of a double slot patch, backed by a cavity and probe-fed. The cavity is filled with TMM10 substrate. The cavity backing helps to reduce back radiation. You can use this antenna for microwave imaging by placing the antenna close to the human body.

The standard rectangular microstrip patch is a narrowband antenna and provides 6-8 dBi Gain with linear polarization. This example based on the work done in [1],[2], models a broadband patch antenna using a slot in the radiator and develops a dual-band and a tri-band variation from it. In the process, the single wide response has been split into multiple narrow band regions catering to specific bands in the WiMAX standard. These patch antennas have been probe-fed.

This example shows how to create and analyze microwave planar Photonic Band Gap (PBG) structures in Antenna Toolbox™. Photonic Band Gap structures consist of a periodic lattice which provides effective and flexible control of the Electromagnetic wave propagation in one or multiple directions. Microwave planar PBG structures were first introduced around the year 2000 by Prof. Itoh and his group. These structures create a stop band over a certain frequency range and are easy to implement by cutting periodic patterns on the metal ground plane.