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提出和实现了一种智能天线系统的模拟权值乘法器。这种乘法器将智能天线阵接收到的基带信号与模拟权值进行相乘,实现了智能天线的波束形成。其处理速度快,无量化误差,无需数模、模数转换,无需存储空间等外部设备,硬件完全由乘法器芯片和运放芯片组成,模拟电路简单,实现和调试方便。仿真和实验的结果对比表明提出的模拟权值乘法器具有较强的可行性和可靠性。
Proposed and implemented a smart antenna system analogue weight multiplier. This kind of multiplier multiplies the baseband signal received by the smart antenna array with the simulation weight to realize the beamforming of the smart antenna. Its processing speed, no quantization error, no digital-analog, analog-digital conversion, no need for storage space and other external devices, hardware entirely by the multiplier chip and operational amplifier chip, analog circuit is simple, easy to implement and debug. The comparison of the simulation results and the experimental results shows that the simulation weight multiplier proposed has strong feasibility and reliability.