1) Zero-IF despreading
零中频解扩
2) Zero-IF demodulator
零中频解调
1.
The Demodulation Technique for Reader is selected, and the research focuses mainly on Zero-IF demodulator.
在对UHF RFID阅读器工作原理进行分析的基础上,介绍了一种工作在UHF频段下的阅读器的射频接口电路,并确定阅读器的解调方式,重点对零中频解调方式进行了研究。
3) zero-IF quadrature demodulator
正交零中频解调
1.
The demodulation techique for reader is selected,and the research focuses mainly on zero-IF quadrature demodulator,gives its solution.
在对UHF RFID读写器工作原理进行分析的基础上,介绍一种工作在UHF频段下的读写器的射频接口电路,并确定读写器的解调方式,重点对正交零中频解调方式进行研究,并给出读写器的实现方案。
4) spreading/de-spreading
扩频/解扩
5) spread spectrum and despreading
扩频和解扩
1.
This paper presents the principle of an mary orthogonal coded spread spectrum and despreading, and then puts forward a method for frame synchronization, based on the corresponding relationship between m sequence and Walsh sequence.
本文介绍了多进制正交码扩频和解扩原理,并基于m序列与Walsh序列的对应关系,给出了一种帧同步方法。
6) Zero-IF
零中频
1.
A low flicker noise mixer for zero-IF GPS receiver;
用于零中频GPS接收机的低闪烁噪声混频器
2.
Design of a Zero-IF CMOS Mixer for WLAN Application;
一种基于W LAN零中频CMO S混频器的设计
3.
Innovative Approaches for Testing Zero-IF Transceiver Devices;
测试零中频收发器器件的创新方法
补充资料：中频
1.高于低频﹑低于高频的电磁振荡，其范围一般是10－550千周。在超外差式收音机中，由收音机本身产生的振荡和接收到的高频混合而取得中频。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条