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Industry News / Passive Components

A Helical Resonator-based Filter with Improved Skirt Selectivity

November 14, 2006
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Helical type resonators are widely used for frequencies below 0.5 GHz, mainly for mass and dimensional considerations. Replacing the more traditional TEM combline types or dielectric resonators by helical resonators significantly reduces the size and mass of the filters at the expense of the insertion loss. The rather complicated...
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