Bandpass Filters Using Parallel Coupled Stripline Stepped Impedance Resonators

Bandpass Filters Using Parallel Coupled Stripline Stepped Impedance Resonators

Approximate design formulas for bandpass filters using parallel coupled stripling stepped impedance resonators (SIR) are derived. The formulas take into account the arbitrary coupling length as well as quarter-wavelength coupling. Some advantages of this filter are its abilities to control spurious...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1980-12, Vol.28 (12), p.1413-1417
Hauptverfasser: Makimoto, M., Yamashita, S.
Format: Artikel
Sprache:eng
Schlagworte:
Admittance
Band pass filters
Coupling circuits
Equations
Impedance
Matched filters
Resonance
Resonant frequency
Resonator filters
Stripline
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Zusammenfassung:Approximate design formulas for bandpass filters using parallel coupled stripling stepped impedance resonators (SIR) are derived. The formulas take into account the arbitrary coupling length as well as quarter-wavelength coupling. Some advantages of this filter are its abilities to control spurious response and insertion loss by changing the structure of the resonator. Using the design formulas two experimental filters were designed and fabricated and their performances closely matched design data.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.1980.1130258