Abstract
The microstrip patch antenna is used in various communication applications including cellular phones, satellites, missiles, and radars, due to its several attractive features such as small size and weight, low cost, and easy fabrication. The microstrip patch antenna consists of a top radiating patch, a bottom ground plane, and a dielectric substrate in between. The patch can have different shapes, the rectangular patch being the most commonly used. In practice, the microstrip antenna suffers from narrow bandwidth and low gain efficiency. This paper aims to enhance the bandwidth and efficiency of a rectangular-patch antenna using the High-Frequency Structure Simulator (HFSS). Initially different patch sizes and substrate materials are investigated and optimal antenna parameters are achieved. Then, the antenna performance is further enhanced by inserting single and double slot designs into the patch. Two cost-effective feeding methods are involved in the investigation. The antenna is designed to operate in the Super High Frequency (SHF) band.
Highlights
Among various antenna structures, the microstrip patch antenna is the most widely used nowadays because it can be installed and fabricated on a printed circuit board [1, 2]
This paper explored ways for enhancing the bandwidth and efficiency of a simple rectangular patch antenna using High-Frequency Structure Simulator (HFSS)
A preliminary design was introduced via optimizing the patch size and substrate material parameters
Summary
The microstrip patch antenna is the most widely used nowadays because it can be installed (due to its low size, weight and cost) and fabricated on a printed circuit board [1, 2]. The microstrip patch antenna is a metallic patch placed on a dielectric material and supported by a ground plane. Contacting method is more attractive because it is easy to model and fabricate and simple to match the impedance. It uses either inset or probe feeding techniques. The inset feeding uses a microstrip line connected to the patch directly, while the probe feeding involves a coaxial cable connected to the ground and extended up to the patch. The main disadvantage of the contacting method is that it yields a low frequency bandwidth
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