摘要
中波调幅发射机发生包络输出信号畸变时,将引起传送的广播节目出现失真、可听度下降等问题。为避免以上情况的发生,DAM-10 k W中波发射机设计了完备的包络检测电路,一旦发射机出现较为严重的包络畸变,该电路能及时提醒值班人员采取措施,确保安全播出。
The transmitted radio show distortion and audibility decline are cause when the medium wave AM transmitter output envelope signal distortion occurs. To avoid the situation, a complete envelope detection circuit is designed in DAM - 10 kW medium wave transmitter. Once the transmitter envelope distortion becomes serious, the circuit can timely remind the staff on duty to take measures, ensure the safety of broadcast.
出处
《电声技术》
2015年第9期34-36,53,共4页
Audio Engineering
关键词
中波发射机
包络畸变
峰值检测
补偿电路
MW transmitter
envelope distortion
peak detection
compensation circuit
