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Filter with stepped impedance resonators and method of making the filter

  • US 6,255,917 B1
  • Filed: 01/12/1999
  • Issued: 07/03/2001
  • Est. Priority Date: 01/12/1999
  • Status: Expired due to Term
First Claim
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1. A filter comprising:

  • first and second resonators, wherein said resonators are stepped impedance resonators including a high impedance portion connected to a low impedance portion, wherein said high impedance portions are integral with a housing, and wherein said high impedance portions are plastic and include a coating of conductive film; and

    a coaxial cable including an inner conductor connected to said first resonator and an outer conductor connected to said second resonator.

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