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Helical resonator filter including short circuit stub tuning

  • US 5,585,771 A
  • Filed: 12/23/1994
  • Issued: 12/17/1996
  • Est. Priority Date: 12/23/1993
  • Status: Expired due to Fees
First Claim
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1. A resonator filter comprising:

  • a conductive element grounded at a point and having an impedance to ground that increases with distance of a position from the point; and

    a wound resonator having one end adapted to be coupled to any one of a range of the positions on the conductive element, said wound resonator further having a tapping point at a distance from the one end for connection to a utilization circuit, whereby the impedance from the tapping point to ground is equal to the sum of the impedance from the tapping point to the end of the wound resonator and the impedance from the one position on the conductive element to ground.

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