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A compact EHF dual-frequency antenna for ASCAMP

机译：用于ASCAMP的紧凑型EHF双频天线

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A compact, high-performance, dual-band antenna has been developednfor use with ASCAMP (advanced single-channel antijam man-portable). Itnconsists of a compact feed with an elliptical subreflector whichnproduces the required focus ring for a displaced axis parabolicnreflector. The main reflector of the antenna, which weights 2.6 pounds,nis made up of six lightweight petals which can be separated and nestednfor easy portability. Because the petals in the assembled antenna do notnmate up perfectly, the aperture illumination efficiency of the antennanis reduced relative to a single-piece reflector by 0.9 dB and 0.2 dB atn44.5 GHz and 20.7 GHz, respectively. Even with this added loss, however,nthe efficiency of the final design is better than 53% in both frequencynbands. The author discusses the considerations which led to the finalnantenna design, describes the antenna's mechanical configuration, andnpresents measured performance test results
机译：已开发出一种紧凑的高性能双频天线，可与ASCAMP（高级单通道抗干扰便携式）配合使用。它由带有椭圆形副反射镜的紧凑型进给器组成，椭圆形副反射镜产生位移轴抛物面反射镜所需的聚焦环。天线的主反射器重2.6磅，由六个轻巧的花瓣组成，这些花瓣可以分开并嵌套在一起，便于携带。由于组装天线中的花瓣未完全吻合，因此天线的孔径照明效率相对于单片反射器在44.5 GHz和20.7 GHz处分别降低了0.9 dB和0.2 dB。但是，即使增加了损耗，最终设计的效率在两个频带中也都优于53％。作者讨论了导致最终天线设计的考虑因素，描述了天线的机械配置，并给出了测得的性能测试结果

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