其中重点介绍了PBG的基本概念，分析了PBG的分类、用途和高阻抗表面结构，对高阻抗表面的设计理论做了总结。
The basic conception of PBG is formulated. The classification, use and high impedance ground plane of PBG are analyzed, and design principles of impedance ground plane are generalized.
它具有耐磨、量轻、灵敏度高、声学阻抗低、容易固定在复杂的表面、价格便宜，频带宽等特点。
They are characterized by ruggedness, light weight, high sensitivity, low acoustic impedance, easy conformability to complex surface, low cost and large bandwidth.
它具有耐磨、量轻、灵敏度高、声学阻抗低、容易固定在复杂的表面、价格便宜，频带宽等特点。
They are characterized by ruggedness, light weight, high sensitivity, low acoustic impedance, easy conformability to complex surface, low cost and large bandwidth.
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