Design of Four-Triangle High-Gain Miniaturized Microstrip Antenna Array

This article presents the design of a high-gain microstrip array antenna using a four-triangle configuration. The antenna’s radiation unit features a novel form of four-triangle shaped patch, and it is constructed using a single-layer dielectric plate fed through a coaxial line. By increasing the antenna’s effective radiated area, the patch unit’s design significantly improves the antenna’s gain, which now stands at 11.29dBi. A 12 element array antenna with a gain of 20.26dBi and an antenna size of 30 mm $\times$ 36 mm was designed and processed based on the four-triangle structure as the patch unit. Its size is 38 percent less than conventional dual-corner fed rectangular patch arrays [4]. Tests and analysis demonstrated the design’s viability.