超外差 meaning in English
[电子学] superheterodyne; superhet; ultradyne
◇超外差变频器 superheterodyne converter; super converter; 超外差电路 superheterodyne circuit; tropadyne; 超外差接收法 superheterodyne reception; 超外差接收机 [电子学] superhet; superheterodyne receiver; ultradyne receiver; 超外差收音机 superheterodyne (radio set); 超外差线圈 super coil
Examples
- The receiver used two stages of down conversion . the total gain of receiver is more than 43db
接收支路采用超外差两次下变频的方式,实验表明接收支路的总增益大于43db 。 - In receiver system development , there are some innovations in the design of high linearity and high dynamic range , also in the circuitry realization
接收机采用两次变频超外差式结构设计，第一中频为高中频。接收机频率合成器采用dds来实现1hz的频率分辨率。 - In the pre - procession of front radio frequency , the super - heterodyne technology which get proper a / d sampling rate through choosing a proper frequency and bandwidth is adopted
射频前端预处理采用成熟的超外差技术，选择合适的中频和带宽，得到合适的a d采样速率。 - The rf receiver consists of rf front end and baseband regulation module . the high - intermediate - frequency superheterodyne structure is adopted in the final scheme . the fine sensitivity of the receiver is achieved by two cascaded lna in the front of the system
系统采用超外差式变频结构设计,两级低噪声放大单元级联保证了接收机灵敏度,两级增益控制单元实现了所要求的接收机动态范围,并且整机的线性度也得到了保证。 - In this paper , microwave t / r front - end for short distance wireless communication is realized in miniature based on low cost mcm - l technology . the main jobs are as follows : 1 . the performances of i / q modulation and direct converter receiver are analyzed to set down the system scheme
主要工作包括以下几个方面: 1 .基于目前流行的数字中频接收技术,分析了i / q调制和直接变频接收机的性能,提出超外差变频的总体系统方案。