电子器件
電子器件
전자기건
JOURNAL OF ELECTRON DEVICES
2014年
4期
669-673
,共5页
地下通信%软件无线电%数字接收机%自动增益控制%调频正交解调
地下通信%軟件無線電%數字接收機%自動增益控製%調頻正交解調
지하통신%연건무선전%수자접수궤%자동증익공제%조빈정교해조
underground communication%software radio%digitized receiver%AGC%FM quadrature demodulation
为解决地下通信实现困难、接收端信号波动范围大的问题，研究了软件无线电接收机的原理和关键技术，设计了数字化地下通信语音调频接收机。根据信号流向，设计了80 dB大动态自动增益控制放大器，给出了数字正交鉴频结构，完成了语音终端设计，最后详细地阐述了接收机的软件设计和硬件实现。整个接收机具有较强的抗噪声性能。
為解決地下通信實現睏難、接收耑信號波動範圍大的問題，研究瞭軟件無線電接收機的原理和關鍵技術，設計瞭數字化地下通信語音調頻接收機。根據信號流嚮，設計瞭80 dB大動態自動增益控製放大器，給齣瞭數字正交鑒頻結構，完成瞭語音終耑設計，最後詳細地闡述瞭接收機的軟件設計和硬件實現。整箇接收機具有較彊的抗譟聲性能。
위해결지하통신실현곤난、접수단신호파동범위대적문제，연구료연건무선전접수궤적원리화관건기술，설계료수자화지하통신어음조빈접수궤。근거신호류향，설계료80 dB대동태자동증익공제방대기，급출료수자정교감빈결구，완성료어음종단설계，최후상세지천술료접수궤적연건설계화경건실현。정개접수궤구유교강적항조성성능。
To solve the difficulty in underground communications and the problem of large signal fluctuation range in the receiver,the principle and key technologies of software radio receiver were analyzed,and a digital Voice FM un-derground communication receiver was designed. According to the signal flow,a large dynamic AGC amplifier up to 80dB was designed, the architecture of FM quadrature demodulation was provided and the voice terminal was completed. Finally,a detailed exposition of the receiver’s software design and hardware implementation were given. The whole receiver has strong anti-noise performance.
