An Ultrawideband Vertically Polarized Omnidirectional Patch Antenna With Low Profile

Zhang, Jing; Dong, Qing; Wang, Wei; Ye, Liang Hua; Li, Jian‐Feng; Zhang, Xiu Yin

doi:10.1109/lawp.2023.3279426

Cited by 8 publications

(2 citation statements)

References 16 publications

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“…The proposed antenna exhibits a remarkable fractional bandwidth of 124.8%, closely approaching the widest fractional bandwidth of 127.27% reported in [16]. The wide bandwidth allows for seamless coverage of a broad spectrum of frequencies, making it suitable for applications that require comprehensive signal reception in a very wide bandwidth.…”

Section: Discussionmentioning

confidence: 60%

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Wideband Omnidirectional Antenna Featuring Small Azimuthal Gain Variation

Zhang,

Fu,

et al. 2023

Micromachines

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Wideband omnidirectional antennas are essential components in radio monitoring and communication systems, enabling the reception of signals from all directions over a wide bandwidth. This paper presents a novel wideband omnidirectional antenna design that achieves a 1-dB gain variation across its azimuthal plane within a bandwidth of 1.8 GHz to 7.77 GHz. The antenna’s exceptional performance is attributed to two flower-bud-shaped monopoles that, through pattern superposition, generate a wideband omnidirectional radiation pattern. Analysis shows that the use of a circular ground plane also reduces the azimuthal gain variation. Additionally, an embedded matching structure integrated into the antenna’s base enhances the impedance bandwidth without compromising its compact size. Analytical investigations demonstrate that the matching structure effectively behaves as a five-order LC circuit, explaining its wideband matching capabilities. Furthermore, structural modifications effectively reduce side lobe levels, ensuring minimal interference. Experimental measurements corroborate the antenna’s omnidirectional radiation pattern and confirm that the azimuthal gain variation remains within 1-dB throughout its bandwidth, while maintaining an S11 below −10 dB from 1.8 GHz to 7.7 GHz. The antenna’s bandwidth overlaps with the spectrum intensively used in mobile communication technologies, such as LTE, Bluetooth, and IEEE 802.11be, as well as radiolocation applications, making it a promising choice for unmanned aerial vehicles conducting communication and radio monitoring missions.

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Section: Discussionmentioning

confidence: 60%

“…[15] introduced a substrate integrated dielectric resonator antenna with a bandwidth of 49.2% and a profile of 0.1 wavelength at the center frequency. A low-profile antenna utilizing a 1-to-8 equal output divider to feed a circular patch was presented in [16], achieving a bandwidth from 1.57 GHz to 5.39 GHz.…”

Section: Introductionmentioning

confidence: 99%