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本文提出了一种基于真实时延的带通多波束阵列，工作在毫米波频段，支持瞬时宽带宽。该设计解决了传统相控阵在宽带宽应用中波束斜视的问题，并实现了多个波束同时独立扫描功能。
The phased array is a common technique where multiple spaced antennas electronically form and scan narrow electromagnetic beams to achieve spatial selectivity. These arrays are also referred to as steering arrays. On the other hand, there are many wireless communications, imaging, and sensing applications where it is highly desirable and even essential to form multiple simultaneous beams, each staring (or scanning around) a specific angle independently. These arrays are also referred to as multi-beam starring arrays. A larger instantaneous bandwidth is always desirable to achieve high data rate in communication systems, better (temperature) sensitivity in passive imaging systems (radiometry), and higher resolution in active imaging systems. However, the majority of phased arrays are either narrowband [1] or do not support signals with an instantaneously wide bandwidth despite having a wide RF
Ta-Shun Chu, Hossein Hashemi
University of Southern California, Los Angeles, CA