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Characteristics of microwave filters based on microstrip photonicbandgap ring structures
Ist Teil von
Current Applied Physics, 2005, 5(6), , pp.619-624
Ort / Verlag
한국물리학회
Erscheinungsjahr
2005
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
We study the characteristics of microstrip ring exhibiting photonic band gap properties. Since the stop band is caused by thereection of electromagnetic waves at the narrow gap introduced in the ring, the geometry of the ring can inuence on the charac-teristics of stop band. The center frequency of the stop band is determined mainly by the outer ring radius when the line width of thecircular ring is rather narrow. But it is determined mainly by the mean ring radius when the ring is not a circular form or the linewidth of circular ring is wide. The frequency range of the stop band can be varied by a reactive component mounted on the gap. Thepresence of capacitor (inductor) on the gap decreases (increases) the center frequency and the frequency range of the stop band.Moreover, the stop band can be widened by modifying the geometry of ring. These properties can be useful in the applicationsto the compact microwave circuits, tunable lters and microwave switches.. KCI Citation Count: 1