A Wideband High Gain Differential Patch Antenna Featuring In-Phase Radiating Apertures
Honglin Zhang, Jianhao Ye
TL;DR
This paper introduces a high-gain, wideband antenna design suitable for communication and radar systems due to its improved performance and bandwidth.
Contribution
The novel antenna design uses in-phase radiating apertures to achieve high gain and wide bandwidth simultaneously.
Findings
The antenna achieves an average gain of 9.7 dBi over a bandwidth of 1.49 GHz to 3.92 GHz.
The design increases bandwidth from 65 MHz to 2.43 GHz using coplanar waveguide feeding and short-circuited patches.
The maximum gain of the antenna reaches 11.3 dBi with a fractional bandwidth of 89.8%.
Abstract
Communication systems need antennas with wide bandwidths to provide large throughput, while imaging radars benefit from high gain for increased range and wide bandwidths for high-resolution imaging. This paper presents the design and evaluation of a wideband, high-gain antenna that achieves an average gain of 9.7 dBi over a bandwidth of 1.49 GHz to 3.92 GHz by using multiple in-phase radiating apertures. The antenna has a unique structure with a central rectangular short-circuited patch sandwiched between two back-to-back U-shaped radiating patches and two flanking H-shaped short-circuited patches. Each of the U-shaped patches employs a coplanar waveguide as feeding to achieve ultra-wideband impedance matching. Benefiting from design arrangement, in-phase electrical field distributions appear at the gaps between the patches that result in equivalent radiating magnetic currents in the…
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Taxonomy
TopicsAntenna Design and Analysis · Microwave Engineering and Waveguides · Antenna Design and Optimization