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首页> 外文会议>Applied Electromagnetics Conference (AEMC), 2011 IEEE >Adaptive phased array antenna based on NMOS phase shifter for Intelligent Transport System application
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Adaptive phased array antenna based on NMOS phase shifter for Intelligent Transport System application

机译：基于NMOS移相器的自适应相控阵天线在智能交通系统中的应用

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摘要

In this paper an adaptive phased array based on NMOS phase shifter is presented. The main beam of the adaptive antenna can be steered ± 30° by controlling the bias voltage of the NMOS based variable phase shifter which is required to detect the blind spot zone in Intelligent Transport System. This transceiver consists of four inset fed rectangular microstrip patch antennas with four different phase angle excitation. Four different phase angles are generated from the same source by using four symmetrical phase shifter by properly adjusting their bias voltage. To maximize the gain and to reduce the side lobe level, the patches are also fed with Chebyscheff polynomial based current distribution technique. Two different case has been studied, one beam angle at 15° and another at 30° from its broad side direction. For both the angles of main beam, the gain of the adaptive phased array antenna is found to be 11.7dBi and 10.5dBi respectively.
机译：本文提出了一种基于NMOS移相器的自适应相控阵。通过控制基于NMOS的可变移相器的偏置电压，可将自适应天线的主波束转向±30°，这是检测智能传输系统中盲区所需的。该收发器由四个具有四个不同相角激励的插入式矩形微带贴片天线组成。通过使用四个对称移相器，通过适当地调整其偏置电压，可以从同一源产生四个不同的相角。为了最大化增益并降低旁瓣电平，还使用基于Chebyscheff多项式的电流分配技术来给贴片供电。研究了两种不同的情况，一种是从其广角方向成15°的光束角，另一种是从其宽侧方向成30°的光束角。对于主波束的两个角度，发现自适应相控阵天线的增益分别为11.7dBi和10.5dBi。

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