基于單層線-圓極化轉(zhuǎn)換聚焦超表面的寬帶高增益圓極化天線設(shè)計(jì)
[Abstract]:A wideband line-circular polarization focusing supersurface is designed based on the principle of line-circular polarization conversion and focusing supersurface correlation theory. A wideband high-gain circular polarization antenna is designed in combination with linear polarization feed. First of all, a single-layer deformable cross supersurface element is proposed. The element is polarization-independent and can realize the phase of reflection wave in 10-14 GHz wide band. At the same time, the one-dimensional hyperelement constructed by this unit can well verify the phenomenon of singular reflection. Then, the distribution of the transverse and longitudinal dimensions of the control units respectively is used to construct a dual functional supersurface which satisfies both the linear and circular polarization conversion and focusing conditions. Finally, the Vivaldi antenna is used as feed to irradiate the supersurface to form an antenna system. The simulation and test results show that the antenna system simultaneously achieves high gain and line-circular polarization conversion, and the bandwidth of the system is 24 dB. The bandwidth of-3 dB axis ratio is 29.8b. The design of this paper fully reflects the flexibility of the supersurface to the electromagnetic wave phase and polarization control, and has a significant application prospect.
【作者單位】: 空軍工程大學(xué)防空反導(dǎo)學(xué)院;
【基金】:國家自然科學(xué)基金(批準(zhǔn)號:61372034)資助的課題~~
【分類號】:TN820
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