人们对毫米波技术的研究已有相当长的历史。早在五十年代就已进行过广泛的研究,打下了基础,在许多方面取得了相当大的进展。但在随后的二十年内进展不大,直到七十年代后期,才又开始取得引人注目的成果。近年来许多毫米波系统的实验证明,毫米波系统具有微波和红外所没有的优点,是微波和红外的重要补充,在实际应用中具有重要的地位。 People have a long history of studying millimeter-wave technology. As early as the 1950s, extensive research has been carried out, the foundation laid, and considerable progress has been made in many aspects. However, little progress was made in the two decades that followed, and it was not until the late 1970s that dramatic gains began again. In recent years, many millimeter-wave system experiments show that the millimeter-wave system has the advantages of microwave and infrared and is an important supplement to microwave and infrared. It has an important position in practical applications.