宽带I/Q正交解调器是高分辨率SAR系统的关键部件之一。
The wideband I/Q demodulator is one of the key devices for high-resolution SAR system.
文中基于矢量网络分析仪测试方法，给出了该宽带正交解调器的幅相不平衡实验结果。
Based on measuring method of vector network analyzer, the experimental results of the wideband quadrature demodulator in the imbalance of amplitude and phase are given in this paper.
提出一种适用于石油测井领域高速电缆遥测通信系统，基于自适应均衡和QAM正交振幅调制技术的调制解调器的原理和实现方法。
This paper proposed a modem based on adaptive equalization and QAM in oil logging for cable telemetry communication systems with high date rate.
通过对OFDM(正交频分复用)技术原理及测井电缆传输特性的分析，设计出满足测井电缆所需的调制解调器。
Based on analyzing the theory of OFDM (Orthogonal Frequency Division Multiplexing) and characteristic of cable transmission, the Modem of high speed cable telemetry system has been designed.
中频部分主要由HFA3724正交调制解调器和基于MB1502的锁相频率合成电路等组成。
The intermediate frequency circuit includes QPSK modulation based on HFA3724, PLL circuit based on MB1502.
中频部分主要由HFA3724正交调制解调器和基于MB1502的锁相频率合成电路等组成。
The intermediate frequency circuit includes QPSK modulation based on HFA3724, PLL circuit based on MB1502.
应用推荐