Ceramic Strip-Line Filters: Essential for Mobile Communications

摘要

In order to ensure undisturbed, error-free transmission, mobile telephones require radio-frequency filters which, among other things, suppress adjacent bands. They also require local oscillators, image frequencies, and frequencies produced by mixing. A solution is provided by microwave ceramic filters. Until recently, these filters were assembled using a complex and expensive packaging technology. Thanks in large part to intense competition, simpler and more economical filters have now become available.