超宽带UWB信号测试的技术分析

Technical Analysis of Ultra Wideband UWB Signal Testing

现如今,无线电技术新兴起一种名叫超宽带(UWB)无线技术。这种技术发展非常迅速,并且有望在低功耗、短距离无线应用上广泛普及。目前,UWB技术已经迅速成为无线USB和短程探地雷达等应用的领导技术。UWB无线电不同于传统窄带无线电,拥有大量的专用测试需求。巨大的信号带宽、窄脉冲和接近热噪底的瞬态功率频谱密度(PSD),使得UWB测试起来非常困难。这是UWB测试的比较简单有效的解决方案。

Today, radio technology has come up with a new technology called ultra wideband （UWB） wireless. This technology is developing rapidly and is expected to be widely used in low power, short distance wireless applications. At present, UWB technology has rapidly become the leading technology of wireless USB and short-range ground penetrating radar applications. UWB radio is different from traditional narrowband radio, and has a large number of special test requirements. It is difficult to test UWB because of the large signal bandwidth, narrow pulse and transient power spectral density （PSD） near the thermal noise base. This is a relatively simple and efficient solution for UWB testing.