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由于毫米波的波长短,故元件尺寸可比微波段小,使得设备的体积小、重量轻,在同样的天线增益和带宽条件下天线尺寸也小,辐射波束窄,特别适合导弹制导等的应用。毫米波系统具有大的频带宽度,在通信系统中允许同时传输大量信息,在雷达中能获得高的分辨能力。毫米波频率范围可能获得大的多普勒频移,在相对速度测量中与微波频段相比较,可以
Due to the short wavelength of the millimeter wave, the size of the component can be smaller than that of the microwave, which makes the device small in size and light in weight. The antenna size is also small and the radiation beam is narrow under the same antenna gain and bandwidth conditions, and is particularly suitable for applications such as missile guidance. The millimeter-wave system has a large bandwidth, allowing a large amount of information to be transmitted simultaneously in the communication system and high resolution in the radar. It is possible to obtain a large Doppler shift in the millimeter-wave frequency range, which in comparison with the microwave frequency band in the relative speed measurement