Summary
Asia-Pacific Microwave Conference
2022
Session Number:TH2-F3
Session:
Number:TH2-F3-5
Broadband Omnidirectional Stacked Biconical Antenna with Gain Enhancement Based on a Gradient Structure
Mengyuan Zhang, Hui Chu,
pp.318-320
Publication Date:2022/11/29
Online ISSN:2188-5079
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Summary:
In this paper, an omnidirectional stacked biconical antenna that can be implemented to achieve broadband and high gain with a gradient biconical structure is proposed. The proposed antenna is constructed by three different biconical elements, in which two of them are composed of a pair of symmetrical cones each loaded with a cylinder and a ring. With this setup, a gain enhancement is achieved in the azimuth plane that corresponds to the omnidirectional radiation, while a broad impedance bandwidth still can be maintained. In the designed prototype, the proposed antenna demonstrates |S11| below -10 dB and an omnidirectional radiation pattern over a frequency band from 0.38 GHz to 10.35 GHz. Moreover, simulated results indicate that, the realized gain of antenna in its azimuth plane ranges from 0.45 dBi at 1 GHz to 6.96 dBi at 6 GHz, which is improved by about 0.95 dBi to 5.5 dBi, when compared with conventional designs.