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1. 发明申请

US20120039366A1 TRUE TIME DELAY PHASE ARRAY RADAR USING ROTARY CLOCKS AND ELECTRONIC DELAY LINES 有权
标题翻译：使用旋转时钟和电子延迟线的真实时间延迟相位阵列雷达
公开(公告)号：US20120039366A1
公开(公告)日：2012-02-16
申请号：US11913377
申请日：2006-06-06
申请人： John Wood , Haris Basit
发明人： John Wood , Haris Basit
IPC分类号： H01Q21/00 , H03H11/26 , H04B1/40 , H03L7/24
CPC分类号： G01S7/03 , G01S13/0209 , G01S2007/403 , G01S2007/4034 , H01Q3/2694 , H01Q3/42
摘要： Local oscillator circuitry for an antenna array is disclosed. The circuitry includes an array of rotary traveling wave oscillators which are arranged in a pattern over an area and coupled so as to make them coherent. This provides for a set of phase synchronous local oscillators distributed over a large area. The array also includes a plurality of phase shifters each of which is connected to one of the rotary oscillators to provide a phase shifted local oscillator for the array. The phase shifter optionally includes a cycle counter that is configured to count cycles of the rotary oscillator to which it is connected and control circuitry that is then operative to provide a shifted rotary oscillator output based on the count from the cycle counter. A system and method for operating a true-time delay phased array antenna system. The system includes a plurality of antenna element circuits for driving or receiving an rf signal from the elements of the array. Each element circuit has a transmit and a receive path and a local multiphase oscillator, such as a rotary traveling wave oscillator. Each path has an analog delay line for providing a true-time delay for the antenna element. Preferably, the analog delay line is a charge coupled device whose control nodes are connected to phases of the local multiphase oscillator to implement a delay that is an integer number local multiphase oscillator periods. A fractional delay is also included in the path by using a sample and hold circuit connected to a particular phase of the oscillator. By delaying each antenna element by a true time delay, broadband operation of the array is possible.
摘要翻译：公开了用于天线阵列的本地振荡器电路。该电路包括旋转行波振荡器的阵列，它们被布置成一个区域上的图案并被耦合以使它们相干。这提供了分布在大面积上的一组相位同步本地振荡器。该阵列还包括多个移相器，每个移相器连接到一个旋转振荡器以提供阵列的相移本地振荡器。移相器可选地包括周期计数器，其被配置为对其连接的旋转振荡器的周期进行计数，然后控制电路可操作以基于来自周期计数器的计数提供移位的旋转振荡器输出。一种用于操作真时延迟相控阵天线系统的系统和方法。该系统包括用于从阵列的元件驱动或接收rf信号的多个天线元件电路。每个元件电路具有发射和接收路径以及本地多相振荡器，例如旋转行波振荡器。每个路径都有一个模拟延迟线，用于提供天线元件的真实时间延迟。优选地，模拟延迟线是电荷耦合器件，其控制节点连接到本地多相振荡器的相位，以实现作为整数局部多相振荡器周期的延迟。通过使用连接到振荡器的特定相位的采样和保持电路，路径中还包括分数延迟。通过将每个天线元件延迟真实的时间延迟，阵列的宽带操作是可能的。

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