CAJ | 학술논문

雷达和通信系统中，采用镜频抑制混频器能够有效抑制镜像频率，提高系统的抗干扰能力，同时能够有效的回收镜频能量，提高工作效率。在介绍镜像干扰原理的基础上，文中给出了一种镜频抑制混频器的框图，该结构既能在接收机中作为镜频抑制混频器，还能在发射机中作为单边带调制器。本文对某型下变频器进行了干扰分析．与镜像抑制混频器进行了对比研究，提出了用镜像抑制混频器替代该型下变频器的可行性。
뢰체화통신계통중，채용경빈억제혼빈기능구유효억제경상빈솔，제고계통적항간우능력，동시능구유효적회수경빈능량，제고공작효솔。재개소경상간우원리적기출상，문중급출료일충경빈억제혼빈기적광도，해결구기능재접수궤중작위경빈억제혼빈기，환능재발사궤중작위단변대조제기。본문대모형하변빈기진행료간우분석．여경상억제혼빈기진행료대비연구，제출료용경상억제혼빈기체대해형하변빈기적가행성。
Image rejection mixer is widely used in radar and communication receiving system to suppress image frequency and improve the ability of antijamming. Based on introducing the principle of interference in the image, a block diagram of image rejection mixer is given,which is not only an image rejection mixer in receiver but also a single sideband modulator in transmitter.The article analyses the interference of D/C,and researches both of the Mixer.And it is pointed out that the D/C can be substituted viably by the image reiection mixer.