摘要
在无线通信中使用跳频技术是通信中主要的保密和抗干扰手段之一,系统中使用数字调谐中心频率的带通滤波器可以改善系统的抗干扰性能。比较了几种可用于实现快速变频的带通滤波器方案,引出一类适合多点精确跳频、适合射频段的数字调谐滤波器,并且对研制的数字调谐跳频滤波器原理、方案和特点进行了初步的介绍,指出结合硬件的复杂的软件技术才是设计数字调谐滤波器的关键。
In the wireless communication systems, using the technology of frequency hopping spread spectrum is the most security and one of anti- jamming measures. In the system,it is possible to improve the ability of anti- jamming by using the digital harmonious center frequency band - pass filter. Several kinds available in the realization of fast frequency conversion band - pass filter plan are compared. A class of precise frequency hopping and suitable for RF tunable filter of many points are introduced. The principle, scheme and cheracteristics of digital harmonious frequency- hopping filter are proposed. The combination of hardware and complex software technology is the key figure tunable filter technology.
出处
《现代电子技术》
2009年第17期75-78,共4页
Modern Electronics Technique
关键词
跳频
数字调谐
滤波器
抗干扰
frequency - hopping
digital harmonious
filter
anti - jamming
