虽然晶体滤波器通常由石英晶体制造者提供,但对于通信工程师也应了解该器件的优点和限制,以便能够设计晶体容易被获得的简单滤波器。本文打算对已有的晶体滤波器技术和实际设计技术方面提供一个基本的了解。为了设计晶体滤波器,首先必须了解通常由制造者提供的晶体的详细参数。晶体可用范围大约从100Hz到200MHz,并且因为90%以上的晶体滤波器都是用AT切晶体 While crystal filters are typically provided by quartz crystal manufacturers, the advantages and limitations of the device should also be understood to the communication engineer to enable the design of simple filters whose crystals are readily available. This article intends to provide a basic understanding of existing crystal filter technology and practical design techniques. In order to design a crystal filter, it is first necessary to understand the detailed parameters of the crystals that are usually provided by the manufacturer. Available crystal range from about 100Hz to 200MHz, and because more than 90% of the crystal filters are AT cut crystal