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Photonic beamforming system for a phased array antenna receiver

Drummond, M. V. ; Nogueira, R.N.

Instituto de Telecomunicações

Invention Title: Photonic beamforming system for a phased array antenna receiver

Patent Nr.: CN2016800033515

Type: Patent

Regional Coverage: National

Grant Status: Granted

Priority Date: 20-04-2015

Filing Date: 25-04-2017

Granting Date: 26-05-2020

Country: China

Tech Offer: High-capacity photonic beamforming for phased antennas

Abstract
本发明的一个目的是一种对具有N天线元件的相控阵列天线所接收的无线电信号执行波束成形的光子系统。它提供通过可调谐光延迟线(6)实现的具有周期性频率响应的真时间延迟波束成形。本发明提供了四个关键优点:光子RF相移;利用本征光子频率下转换的高灵敏度相干检测;相位噪声消除,因为频移光本振信号可从用于供给电光调制器(5)的同一激光源(1)获得;仅需要单个延迟线的可能性,该单个延迟线在所有可调谐光延迟线之间共享。这些优点的集合使所提出系统对于高端无线接收机极其有吸引力,高端无线接收机是诸如卫星通信系统和宽带无线信号传输的高要求应用所需要的。