期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 68, 期 4, 页码 3254-3258出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2019.2944548
关键词
Broadside/endfire radiation; even/odd mode; shared-aperture antenna; spoof surface plasmon polaritons (SSPPs)
资金
- Key Project of Natural Science Foundation of China [61631015]
- National Natural Science Foundation of China [61671466, 61601507]
- National Key Research and Development Program of China [SQ2017YFA0700201]
In this communication, we propose a method of designing shared-aperture antennas based on excitations of both even- and odd-mode spoof surface plasmon polaritons (SSPPs). The antenna consists of a feeding monopole and a tapered SSPPs structure, both of which are placed vertically on a metallic ground. Due to tilted electric vectors of the monopole in near fields, both even- and odd-mode SSPPs can be excited. Standing waves of even-mode SSPPs on the SSPPs structure will enable broadside or tilted radiation, while traveling waves of odd-mode SSPPs on the tapered end will enable endfire radiation. Therefore, such an antenna configuration can achieve broadside, tilted, and endfire radiations. As an example, a shared-aperture antenna operating in C/X/Ku-bands was designed, fabricated, and measured. Both the simulated and measured results verify that the antenna can achieve broadside radiation in 4.68-4.83 GHz, tilted radiation in 8.51-8.82 GHz, and endfire radiation in 11.00-17.38 GHz, with peak gains about 2.7, 3.5, and 6.8 dB, respectively. The antenna itself can work in multiple bands with customized radiation patterns, without using several antenna radiators and complex feeding network. This communication provides an effective method of designing shared-aperture antennas in future lightweight and multifunctional wireless communication systems.
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