A Novel Printed-circuit Microwave Antenna

一种新型印刷电路微波天线

• 批准号: 9461548
• 负责人: Lee Miller
• 金额: $ 7.42万
• 依托单位: Applied Science Associates Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9461548&HistoricalAwards=false
• 关键词: Novel; Printed; circuit; Microwave; Antenna

A novel printed-circuit antenna is described which has the potential of drastically reducing the cost of microwave antennas. Use of printed-circuit dipole antenna arrays is not new, however existing methods require complex and precise interconnecting transmission lines. The antenna comprises a guided wave substrate that is coupled, by proximity, to dipole elements. The structure is relatively thin in cross-section, and readily adaptable to many different antenna applications. It does not require any protrusions, such as the feed-horn needed with parabolic dishes. The radiation patterns may be of essentially arbitrary form. Bandwidth and aperture efficiency of the antenna is essentially identical to any traveling-wave structure; such as planar waveguide slotted arrays. These waveguide array antennas, although expensive to manufacture, represent state-of-the-art electrical performance and are used in many applications. An example is the F16 aircraft multi-mode radar. The proposed antenna is electrically analogous, the difference being in the excitation mode. Experimental results are given which confirm the electrical efficiency and directionality properties of the antenna.

本文介绍了一种新型的印刷电路天线，它有可能大大降低微波天线的成本。印刷电路偶极天线阵列的使用并不新鲜，然而现有的方法需要复杂且精确的互连传输线。该天线包括导波基板，该导波基板通过接近耦合到偶极元件。该结构的横截面相对较薄，并且容易适用于许多不同的天线应用。它不需要任何突起，如抛物面天线所需的馈电喇叭。辐射图案可以具有基本上任意的形式。天线的带宽和孔径效率基本上与任何行波结构相同，例如平面波导缝隙阵列。这些波导阵列天线虽然制造昂贵，但代表了最先进的电气性能，并用于许多应用中。一个例子是F16飞机多模式雷达。所提出的天线是电模拟的，不同之处在于激励模式。实验结果证实了天线的电效率和方向性特性。