一.引言众所周知,微波衰减材料已广泛地应用于消极电子对抗中,例如地面重要的军事设施、空中的飞行器以及建造保密的微波隔离室等都需要大量使用微波衰减材料来防止对方的发现、跟踪和袭击。在微波测量系统中,作为衰减器和负载也在波导和同轴线中得到广泛应用。此外,在许多微波电真空器件中,它是一 I. INTRODUCTION As we all know, microwave attenuation materials have been widely used in negative electronic warfare, such as ground-based military facilities, aerial vehicles and the construction of confidential microwave isolation room and so require a large number of microwave attenuation materials to prevent each other’s discovery, tracking And attack. In microwave measurement systems, attenuators and loads are also widely used in waveguides and coaxial lines. In addition, in many microwave electric vacuum devices, it is one