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Article: Thin film filter design & technology: the main advantage of a film filter is its ability to achieve high accuracy in processing in small device sizes when compared to competing technologies.(EYE ON FILTERS)
- Article from:
- Wireless Design & Development
- Article date:
- September 1, 2009
- Author:
CopyrightCOPYRIGHT 2009 Advantage Business Media. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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When specifying filters for a design, the admissible insertion loss and frequency range in the pass-band, and 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).
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