In Low-speed Short-range Wireless Image Transmission System

A wireless image transmitting system based on Zero-IF is designed. A new idea realized by ultra-wide band technology is also put forward. The design and testing ideas of digital wireless image transmitting system are studied. On the basis of introduction of main technologies in wireless communication area, two aspects has been finished:A low speed wireless image transmitting system in short distance is designed and realized. The system based on the principle of zero-IF is realized by WE905 chip combined with AFC (Automatic Frequency Control) circuits power amplify circuit and so on to communicate. The process is described in details: signals from PC are transmitted to wireless system, coupled in the carrier of 900MHz frequency, and reach the wireless channels via antenna. Besides, some experiments are designed to analyze and verify the performance of circuit, further improvements being made according to the results.On the other aspect, a new idea which is realized in XS110 chipset experiment board is put forward. The advantage of this scheme is high data rate which can satisfy the need of consumers.Digital mode has many advantages, compared with traditional analog wireless image transmitting system, such as being strong in noisy environment, good security properties and so on.