image-reject

基本解释

This paper presented a X-Band Image-Reject Mixer Design and its circuit using ADS tool for debugging.
利用ADS工具辅助设计和调试了一个X波段镜像抑制混频器。
By the reconstruction of DCT coefficient, HSFW can accept JPEG lossy compression on the watermarked image to a pre-determined quality factor, and reject malicious attacks.
基于DCT系数重构的分层认证水印算法利用预量化原理来实现对有损压缩后的DCT系数的重构，水印达到了对正常的JPEG有损压缩鲁棒，对恶意篡改脆弱的目的。
Then we perform digital pre-compensation method, which can be used in the processing of base band signal to reject image frequency and protect carrier leak to meet the application purpose.
然后采用对基带信号的数字预补偿方法来抑制镜像频率和载波泄漏，从而达到应用的目的。

镜频抑制
In chapter three, after presenting the working principle of mixer and image-reject mixer, some problems which should be paid attention to during the mixer design are discussed.
第三章介绍了微波混频器及镜频抑制混频器的工作原理，讨论了设计微波镜频抑制混频器中应该注意的一些问题。