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首页> 外文期刊>Aerospace and Electronic Systems, IEEE Transactions on >Multi-Band Radar Receiver Design Approach for Minimum Bandpass Sampling
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Multi-Band Radar Receiver Design Approach for Minimum Bandpass Sampling

机译：最小带通采样的多频带雷达接收器设计方法

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摘要

Multi-frequency radars, which are employed in a plurality of emerging applications, exploit the echoes for different bands that come from illuminated targets. A compact multi-function architecture that makes use of direct sampling could be a preferable choice for these new-generation radar systems, with RF front-end design a first step in their development. Here, within the framework of multi-frequency radars, an analytical tool for simultaneously acquiring the signal bands by using the minimum sub-Nyquist sampling frequency is addressed. Although the dual-band radar scenario is exhaustively analyzed, keys to understand the acquisition of more-than-two-band systems are also provided. Moreover, as the core of the associated RF architecture to carry out arbitrary multi-band signal preselections, a new class of microwave planar multi-passband filters based on stepped-impedance-line signal-interference concepts is reported. Also, for validation, the construction and testing of a microstrip spectrally-asymmetrical dual-passband filter prototype for a specific example of minimum-sampling dual-frequency radar RF front-end are shown.
机译：在许多新兴应用中使用的多频雷达利用来自照明目标的不同频段的回波。对于这些新一代雷达系统来说，利用直接采样的紧凑型多功能架构可能是一个更好的选择，而射频前端设计是其开发的第一步。在此，在多频雷达的框架内，提出了一种用于通过使用最小奈奎斯特次采样频率同时获取信号频带的分析工具。尽管对双频带雷达方案进行了详尽的分析，但也提供了了解获取多于两个频带的系统的关键。此外，作为执行任意多频带信号预选的相关RF体系结构的核心，已报道了一种基于步进阻抗线信号干扰概念的新型微波平面多通滤波器。此外，为验证起见，显示了微带谱非对称双通带滤波器原型的构造和测试，该原型用于最小采样双频雷达RF前端的特定示例。

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