本文選題：脊波導(dǎo)縫隙天線　切入點(diǎn)：圓極化　出處：《微波學(xué)報(bào)》2014年06期 　論文類型：期刊論文

【摘要】：設(shè)計(jì)了一種新型脊波導(dǎo)縫隙圓極化天線。在脊波導(dǎo)寬邊開并聯(lián)縱縫,從波導(dǎo)耦合電磁波至其上方的四脊波導(dǎo)圓極化器,實(shí)現(xiàn)圓極化輻射。采用脊波導(dǎo)不僅減小了單元尺寸,更改善了天線的帶寬性能。重點(diǎn)研究了四脊波導(dǎo)圓極化器對(duì)相互垂直的兩輻射場(chǎng)分量的影響,優(yōu)化單元的軸比特性。在提取單元諧振電導(dǎo)的基礎(chǔ)上,設(shè)計(jì)了工作在10GHz的1×10圓極化波導(dǎo)縫隙陣列。對(duì)天線實(shí)物測(cè)試得到中心頻率處的增益為16.8d B,第一副瓣電平為25d B,阻抗帶寬約為8.5%,相對(duì)軸比帶寬(AR≤3d B)約為3.2%。
[Abstract]:In this paper, a novel circular polarization antenna for ridged waveguide slot is designed. A parallel longitudinal slot is opened at the wide side of the ridge waveguide, and the circular polarization radiation is realized by a four-ridge waveguide polarizer from the waveguide coupling electromagnetic wave to the top of the waveguide. The use of the ridge waveguide not only reduces the size of the element, but also reduces the size of the waveguide. Furthermore, the bandwidth performance of antenna is improved. The influence of four-ridge waveguide circular polarizer on the components of two radiation fields perpendicular to each other is studied, and the axial ratio characteristic of the element is optimized. On the basis of extracting the resonant conductance of the element, the resonant conductance of the cell is extracted. A 1 脳 10 circularly polarized waveguide slot array operating in 10GHz is designed. The gain at the center frequency is 16.8 dB, the first sidelobe level is 25 dB, the impedance bandwidth is about 8.5 dB, and the relative axis ratio bandwidth AR 鈮，

本文編號(hào)：1646895