Design Two Port Microstrip Patch Array Antenna for Ultra-Wideband Applications
Keywords:
Microstrip Antenna, Partial ground plane, Ultra-wide bandAbstract
Ultra-Wideband (UWB) communication systems require antennas that provide wide impedance bandwidth, high gain, low mutual coupling, and stable radiation characteristics while maintaining a compact and low-profile structure. Among the available antenna technologies, microstrip patch array antennas are widely preferred due to their lightweight design, low fabrication cost, ease of integration with microwave circuits, and compatibility with modern wireless communication systems. This paper presents the design of a two-port microstrip patch array antenna for UWB applications. The proposed antenna consists of two symmetrically arranged microstrip patch elements configured as an array to enhance gain and improve radiation performance while supporting dual-port operation. The antenna geometry and feed network are optimized to achieve broad impedance bandwidth, good impedance matching, and high isolation between the two ports. Performance parameters including return loss (|S11|), mutual coupling (|S21|), Voltage Standing Wave Ratio (VSWR), gain, radiation pattern, bandwidth, and radiation efficiency are analyzed through electromagnetic simulations. The proposed design demonstrates improved bandwidth, enhanced gain, and reduced port-to-port interference, making it suitable for high-speed wireless communication, radar imaging, Internet of Things (IoT), medical imaging, and short-range sensing applications. The compact structure and reliable performance indicate that the proposed two-port microstrip patch array antenna is a promising candidate for next-generation UWB wireless communication systems.
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