无线电工业的飞速发展,促使新材料、新工艺及其新型元器件的不断发展,压电陶瓷材料及其滤波器的出现就是一例。目前压电陶瓷正越来越广泛地应用于水声、超声、无线电整机(滤波器、监频器、槽路、换能器)等方面。其中陶瓷滤波器的性能、体积、重量等都比LC滤波器优胜得多。压电陶瓷虽是一种多晶材料,但它具有 The rapid development of the radio industry, prompting the continuous development of new materials, new processes and new components, the emergence of piezoelectric ceramics and filters is an example. At present, piezoelectric ceramics are more and more widely used in underwater acoustic, ultrasonic, radio machine (filters, monitors, tanks, transducers) and so on. One of the ceramic filter performance, size, weight and much better than the LC filter. Although piezoelectric ceramic is a polycrystalline material, but it has