Transcription of Introduction to RF Filter Design - Rowan University
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Introduction to RF Filter DesignRF Electronics Spring, 2018 Robert R. Krchnavek Rowan UniversityObjectives Understand the fundamental concepts and definitions for filters. Know how to Design filters using tabulated parameters for common Filter types. Know how to convert lumped-element Filter designs into distributed-element Configurations = cwhere c is defined as the cutoff frequency for low-pass and high-pass filters and the center frequency for bandpass and bandstop Filters Profiles for Three Common Types Binomial or Butterworth - easy to implement; monotonic profile; requires numerous elements to get step profile. Chebyshev - equal amplitude variations; steeper profile than Butterworth.
Impedance Transformation • For the Butterworth designs, the source and load resistances have a value of 1. • For the Chebyshev designs, even-number ordered designs have a non-unity load. • Impedance transformation is the process of adjusting all the elements to account for different source and load impedances.
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