Design and Analysis of Multidielectric Layer Microstrip Antenna With Varying Superstrate Layer Characteristics
The multidielectric layer microstrip antenna structure involves addition of a superstrate layer over the substrate. It is important that the superstrate layer must act as a part of the antenna. Design of the multidielectric layer microstrip patch antenna based on different thickness and permittivity of the superstrate layer has significant effect in gain and antenna efficiency. The designer must however ensure that the superstrate layer does not adversely affect the performance of the antenna. With proper choice of the thickness of substrate and superstrate layer, significant increase in gain can be achieved for practical applications. This paper discusses a set of closed form expressions for the resonant frequency for the general case of multidielectric layers.