Production method for micro-strip filter
AssigneeNEC Corporation
InventorWataru Hattori
Life of this patent
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Abstract
A production method for a band-pass micro-strip filter which need not conduct an adjusting process on the central frequency in a pass band based on the frequency characteristics of a filter that have been previously measured and inspected after the filter is produced. The production method for a micro-strip filter includes the step of adjusting, in the production process, a resonator length according to the thickness and capacitance of a substrate that have been measured in advance.
Claims15
A method for manufacturing a microstrip filter made up by placing a plurality of microstrip resonators each resonating at the center frequency of a pass band at intervals corresponding to a coupling coefficient, characterized in that a resonator length adjustment step for adjusting the resonator length of microstrip resonators without measuring and inspecting the frequency characteristics of the microstrip filter is included in a filter pattern processing step for processing a conductor layer formed on a dielectric substrate into a filter pattern of the microstrip filter.
Dependencies are inferred from the claim text.