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US 2017/0250452 A1Published application
Filter and method of designing same
AssigneeFujikura Ltd.
InventorYusuke Uemichi
Life of this patent
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Abstract
A filter includes: a first resonator and a second resonator; a first strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the first resonator; a first conductor pin which is electrically connected to a first end of the first strip-shaped conductor; a second strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the second resonator; and a second conductor pin which is electrically connected to a first end of the second strip-shaped conductor.
Claims6
A filter comprising:
- a first resonator and a second resonator coupled to each other directly or via another resonator;
- a first strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the first resonator;
- a first conductor pin which is (i) electrically connected to a first end of the first strip-shaped conductor and (ii) inserted into the first resonator;
- a second strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the second resonator;
- and
- a second conductor pin which is (i) electrically connected to a first end of the second strip-shaped conductor and (ii) inserted into the second resonator.
3 more elements
A method of designing a filter,
- the filter comprising:
- a first resonator and a second resonator each including a narrow wall and a pair of wide walls, the first resonator and second resonator being coupled to each other directly or via another resonator;
- a first strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the first resonator;
- a first conductor pin which is (i) electrically connected to a first end of the first strip-shaped conductor and (ii) inserted into the first resonator;
- a second strip-shaped conductor which is provided on a dielectric layer provided on a surface of a first wide wall of the second resonator;
- and
- a second conductor pin which is (i) electrically connected to a first end of the second strip-shaped conductor and (ii) inserted into the second resonator,
- said method comprising the steps of:
- (A) obtaining a correlation, between a parameter and an external Q factor, occurring in a case of altering at least one parameter of first through third parameters,
- the first parameter being lengths of portions of the respective first and second conductor pins, which portions are inserted into the respective first and second resonators,
- the second parameter being (i) a distance between (a) a first short wall, constituting a portion of the narrow wall of the first resonator and (b) the first conductor pin and (ii) a distance between (c) a second short wall constituting a portion of the narrow wall of the second resonator and (d) the second conductor pin,
- the third parameter being widths of the respective first and second strip-shaped conductors;
- (B) determining, in accordance with a result of the step (A), a parameter corresponding to a desired external Q factor.
10 more elements
Dependencies are inferred from the claim text.