Design of a Wideband Printed Patch Dipole Antenna with a Balanced On-Board Feeding Network

Abstract

This paper proposes a wideband printed patch dipole antenna with a simple on-board feeding network. The proposed antenna is composed of two dipole radiators, a transmission line, and an on-board feeding network with a chip balun. The dipole radiators are printed on a substrate, and the edges of the radiators are truncated to create a hexagonal shape with wide impedance-matching characteristics. The chip balun is embedded in an RO4003C printed circuit board (PCB) to excite differential feeding to each radiator with a 180° phase difference. The proposed antenna is optimized using a CST Studio full electromagnetic software tool, and it is fabricated and measured in an anechoic chamber. The measured fractional bandwidth for the reflection coefficient below –10 dB is 79.5%, and the proposed antenna has a measured gain of 7.1 dBi at 3.5 GHz.

Impedance Bandwidth Enhancement Using Capacitor-Controlled Series Resonance in an Antenna’s Feeding Structure

“…The other case is to add a conductor near the antenna's printed circuit board (PCB) to generate parasitic resonance to increase the antenna's impedance bandwidth. A patch dipole antenna printed board feeding in the center of the PCB and a chip balun are embedded therein to excite each radiator to achieve wideband impedance matching technology [7]. Using endless metal rims around the ground plane can improve the antenna's performance [8].…”

Design of a Dual-Polarization All-Metal Vivaldi Array Antenna Using a Metal 3D Printing Method for High-Power Jamming Systems

“…Although these antennas can achieve the broadband characteristics, the element antenna size is too large to extend to an array antenna. To solve this problem, many studies have attempted to make the antenna elements thinner and smaller, such as printed LPDAs fed by a coplanar waveguide [11], [12] printed Vivaldi antennas using a tapered slot edge or cavity structure [13], [14], and bow-tie slot antennas with cavity-backed design [15], [16]. However, these techniques are still difficult to be applied to dual-polarization highpower jamming systems, which require a much higher level of fabrication complexity [17], [18].…”