Transcription of Prof. Tzong-Lin Wu Department of Electrical …
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Prof. T. L. WuMicrowave Filter DesignChp4. Transmission Lines and ComponentsProf. Tzong-Lin WuDepartment of Electrical EngineeringNational taiwan UniversityProf. T. L. WuMicrostrip LinesMicrostrip Structure Inhomogeneous structure: Due to the fields within two guided wave media, the microstrip does not support a pure TEM wave. When the longitudinal components of the fields for the dominant mode of a microstripline is much smaller than the transverse components, the quasi TEM approximation is applicable to facilitate T. L. WuMicrostrip Lines - Transmission Line ParametersEffective Dielectric Constant ( re) and Characteristic Impedance(ZC) For thin conductors ( , t 0), closed form expression (error 1 % ): W/h 1: re W/h 1: For thin conductors ( , t 0), more accurate expressions: Effective dielectric constant (error % ): Characteristic impedance (error % ):Prof.
Prof. T. L. Wu Microwave Filter Design Chp4. Transmission Lines and Components Prof. Tzong-Lin Wu Department of Electrical Engineering National Taiwan University
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