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Thin Film Filter Design and Technology

Thin Film Filter Design and Technology Written By: George Korony Abstract: When specifying filter for a design, the admissible insertion loss and frequency range in the pass-band, the required attenuation and frequency ranges in the forbidden-bands, are the most important characteristics of filters. Several other important parameters are also required to define a filter, including functional parameters as input output impedances, power handling capabilities, and reliability requirements, as well as physical requirements such as dimensions, input-output type (wire-bond, SMT, BGA), and encapsulation. Other conditions may be imposed by special applications (space, automotive, medical)