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US 6,686,815 B1Granted
Microwave filter
AssigneeNokia Corporation
InventorsDariush Mirshekarl-Syahkal, Joseph Chuma
Life of this patent
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Abstract
A filter element comprising a conductive element mounted in a conductive housing, the conductive element and conductive housing arranged such that the conductive element is electrically coupled to the conductive housing at one end of the element and capacitively coupled to the conductive housing at the opposite end of the element with a solid dielectric element disposed around a length of the conductive element.
Claims40
A filter comprising:
- a plurality of adjacent filter elements providing an elliptic function filter, wherein the filter elements comprise a conductive element mounted in a conductive housing, the conductive element and conductive housing with the conductive element being electrically coupled to the conductive housing at one end of the element and capacitively coupled to the conductive housing at an opposite end of the element;
- and wherein
- a solid dielectric element is disposed around a length of conductive elements of two adjacent filter elements between which negative coupling is to occur and an opening providing electric coupling between the two adjacent filter elements.
Dependencies are inferred from the claim text.