EIRP and power efficiency of reconfigurable active transmit antennas

IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010) Pub Date : 1999-07-11 DOI:10.1109/APS.1999.789515

U. Kraft

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Abstract

Reconfigurable, active transmit antennas are attractive for a variety of applications in the military and aerospace sector, since they offer antenna pattern flexibility via reconfigurable amplitude/phase control and permit high EIRP-figures with a set of amplifiers operating at fairly low power levels. Such antennas can be realized as direct radiating arrays, single-reflector multi-feed types or array-fed double reflector antennas (magnified arrays) and comprise, in all cases, a radiator section, a set of power amplifiers (PAs) and a low-power BFN. Looking from the systems perspective, one basic need for the handling of such antennas within the systems analysis and design is an antenna model which can be used for a wide variety of antenna types and provides easily usable tools for the prediction of the most relevant system figures. Whereas such a description for the gain and G/T of active receive antennas has been proposed in Kraft and Blaschke (1997), the current contribution provides a corresponding model for the EIRP and power efficiency of active transmit antennas where the antenna gain is almost meaningless.

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可重构有源发射天线的EIRP和功率效率

可重构的有源发射天线对于军事和航空航天领域的各种应用都很有吸引力，因为它们通过可重构的幅度/相位控制提供了天线方向图的灵活性，并允许在相当低的功率水平下使用一组放大器实现高eirp值。这种天线可以实现为直接辐射阵列、单反射面多馈电类型或阵列馈电双反射面天线(放大阵列)，并且在所有情况下都包括一个辐射器部分、一组功率放大器(pa)和一个低功率BFN。从系统的角度来看，在系统分析和设计中处理此类天线的一个基本需求是天线模型，该天线模型可用于各种天线类型，并为预测最相关的系统图形提供易于使用的工具。虽然Kraft和Blaschke(1997)已经提出了对有源接收天线增益和G/T的描述，但目前的贡献为有源发射天线的EIRP和功率效率提供了相应的模型，其中天线增益几乎没有意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Antennas and Propagation Society International Symposium. 1999 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.99CH37010)

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