As a result , rf front - end circuits have become one of the most active research areas in wireless communications 目前,射频电路存在广阔的市场,成为无线通信领域内研究的热点之一。
In view of the importance of rf front - end circuits in the receiver system , the paper finally is focused on the analysis and design of the rf front - end circuits , including the design of low noise amplifier ( lna ) , microstrip filter and balanced mixer . all the circuits above are simulated individually using ansoft serenade , and the results are satisfying with the desired performance 考虑到射频前端电路性能的好坏会直接影响到整机的性能,文中还重点论述了该接收机射频前端电路的分析和设计,主要包括低噪声放大器、微带滤波器和单平衡混频器的理论分析和实际设计,并在ansoftserenade环境下进行了模拟仿真,仿真结果符合设计要求。
Finally , a ku - band receiver combined with lna , mixer and filter is designed , and a complete flow chart for the design process of the front - end circuit is given . in the end , some rf transceiver examples such as microwave power transfer system , satellite communication receiver system and phs cell station system are introduced and analyzed 最后结合前面各章内容,给出了一个ku波段射频前端接收机完整设计实例,并给出了包含微波无线供电系统、卫星接收机和phs基站在内的多个射频前端电路的实例分析。