Power system harmonics and passive filter designs por Das, J. C. 1934-

The circuits and filters handbook passive, active, and digital filters

Available for University of the Philippines Diliman via Taylor & Francis. Click here to access
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The circuits and filters handbook passive, active, and digital filters

Ridge waveguides and passive microwave components por Helszajn, J.

Available for University of the Philippines Diliman via IET Digital Library. Click here to access
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Advanced electromagnetic analysis of passive and active planar structures por Rozzi, T., Farina, Marco Ph.D

Available for University of the Philippines Diliman via IET Digital Library. Click here to access
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Microwave planar passive circuits and filters por Helszajn, J. (Joseph)

Active and passive analog filter design an introduction por Huelsman, Lawrence P.