As a result , rf front - end circuits have become one of the most active research areas in wireless communications 目前,射頻電路存在廣闊的市場(chǎng),成為無(wú)線通信領(lǐng)域內(nèi)研究的熱點(diǎn)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 考慮到射頻前端電路性能的好壞會(huì)直接影響到整機(jī)的性能,文中還重點(diǎn)論述了該接收機(jī)射頻前端電路的分析和設(shè)計(jì),主要包括低噪聲放大器、微帶濾波器和單平衡混頻器的理論分析和實(shí)際設(shè)計(jì),并在ansoftserenade環(huán)境下進(jìn)行了模擬仿真,仿真結(jié)果符合設(shè)計(jì)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 最后結(jié)合前面各章內(nèi)容,給出了一個(gè)ku波段射頻前端接收機(jī)完整設(shè)計(jì)實(shí)例,并給出了包含微波無(wú)線供電系統(tǒng)、衛(wèi)星接收機(jī)和phs基站在內(nèi)的多個(gè)射頻前端電路的實(shí)例分析。