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LOW PASS FILTER

  • US 20170170798A1
  • Filed: 02/27/2017
  • Published: 06/15/2017
  • Est. Priority Date: 03/24/2015
  • Status: Active Grant
First Claim
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1. A low pass filter comprising:

  • a multilayer body including a plurality of insulator layers laminated in a lamination direction;

    a first LC parallel resonator including a first inductor including a first end portion at a first side in the lamination direction and a second end portion at a second side in the lamination direction, the first inductor having a helical shape turning around while extending in the lamination direction;

    a second LC parallel resonator including a second inductor including a third end portion at the first side in the lamination direction and a fourth end portion at the second side in the lamination direction, the second inductor including a helical shape turning around while extending in the lamination direction, the second LC parallel resonator being electrically connected in series with the first LC parallel resonator;

    a first via-hole conductor connected to the first end portion of the first inductor and the third end portion of the second inductor and extending to the second side in the lamination direction with respect to the second end portion of the first inductor and the fourth end portion of the second inductor; and

    a first capacitor electrically connected in parallel with at least a portion of the first inductor and a portion of the second inductor and defined by a first capacitor conductor layer.

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