【摘要】 提出了一种基于光学四波混频技术的方向回溯天线阵。这种类型的天线阵能够在不使用移相器的情况下自动追踪移动终端。现有的智能天线和相控阵天线的自动追踪功能是基于相位共轭混频电路实现的。提出了一种更新的基于四波混频技术的相位共轭的实现方法,以解决原有方法在射频电路在设计和结构上出现的问题。最后分析了半导体光放大器(SOA)的工作原理,并设计合适的参数以确保产生的相位共轭射频信号强度能够满足发射天线阵正常工作的要求。更多还原

【Abstract】 A retro-directive arrays based on the optical Four-Wave Mixing(FWM) technique was proposed. This kind of arrays automatically tracks mobile terminal without phase shifters. Normal selftracking action is based on phase-conjugating mixing circuit in smart antenna and phased array antenna. A new method was suggested for phase-conjugation which relies on FWM technique to solve the problems in the radio frequency circuit and design the structure of this system afterward. Finally, the working principle of SOA was analyzed and the appropriate parameters was designed to ensure that the phase-conjugating RF signal intensity can make the transmitting antenna array work normally.更多还原