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A single RF channel smart antenna receiver array with digital beamforming for WLAN application

机译:具有数字波束成形功能的单个RF信道智能天线接收器阵列,用于WLAN应用

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A low-noise smart antenna array with adaptive beamforming is proposed. The system employs a Spatial Multiplexing of Local Elements (SMILE) scheme to reduce N RF-channels to one, reducing the amount of costly RF hardware by a factor of N. The sampling rate must be higher than the signal bandwidth based on the Nyquist criterion to ensure proper restoration of the original signal. The multiplexing network is implemented with low-noise amplifier switches utilizing NE32485C HJFETs and a non-conventional feed network. Switching is achieved at 20 MHz allowing up to 10 Mbps reception. Beamforming and digital data demodulation is performed to validate the system.
机译:提出了一种具有自适应波束形成的低噪声智能天线阵列。该系统采用本地元素空间复用(SMILE)方案,将N个RF通道减少为一个,从而将昂贵的RF硬件数量减少了N倍。基于奈奎斯特准则,采样率必须高于信号带宽以确保正确恢复原始信号。多路复用网络通过利用NE32485C HJFET的低噪声放大器开关和非常规馈电网络来实现。以20 MHz的频率实现切换,从而允许高达10 Mbps的接收速度。执行波束成形和数字数据解调以验证系统。

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