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US 11,121,695 B2Granted
Diplexer and multiplexer
AssigneeFujikura Ltd.
InventorYusuke Uemichi
Life of this patent
Estimating the term…
Abstract
A diplexer (100) includes: first and second directional couplers (106A, 106B); and first and second filters (101A, 101B). The filters (101A, 101B) each include a plurality of resonators (110A to 150A, 110B to 150B) that are electromagnetically coupled. The resonators (110A to 150A, 110B to 150B) each have a broad wall that is in a shape of a circle or a regular polygon with six or more vertices, and two resonators, which are coupled together, of the resonators (110A to 150A, 110B to 150B) are arranged such that D<R1+R2 is satisfied, where R1 and R2 represent radii of circumcircles of the broad walls of the two resonators and D represents a center-to-center distance between the two resonators.
Claims13
A diplexer comprising:
- a first directional coupler that is comprised of a first waveguide and a second waveguide;
- a second directional coupler that is comprised of a third waveguide and a fourth waveguide;
- a first filter that resides between the first waveguide and the third waveguide;
- and
- a second filter that resides between the second waveguide and the fourth waveguide,
- the first filter and the second filter each including a plurality of resonators that are electromagnetically coupled,
- the plurality of resonators each having a broad wall that is in a shape of a circle or a regular polygon with six or more vertices,
- two resonators, which are coupled together, of the plurality of resonators being arranged such that D<R1+R2 is satisfied, where R1 and R2 represent radii of circumcircles of the broad walls of the two resonators and D represents a center-to-center distance between the two resonators,
- wherein:
- each of the plurality of resonators is formed by a pair of the broad walls and a narrow wall that resides between the pair of broad walls,
- the pair of broad walls are constituted by a pair of conductor layers provided on opposite surfaces of a dielectric substrate, and
- the narrow wall passes through the dielectric substrate and is constituted by a conductor post group via which the pair of broad walls are in electrical communication with each other.
9 more elements
A diplexer comprising:
- a first directional coupler that is comprised of a first waveguide and a second waveguide;
- a second directional coupler that is comprised of a third waveguide and a fourth waveguide;
- a first filter that resides between the first waveguide and the third waveguide;
- and
- a second filter that resides between the second waveguide and the fourth waveguide,
- the first filter and the second filter each including a plurality of resonators that are electromagnetically coupled,
- the plurality of resonators each having a broad wall that is in a shape of a circle or a regular polygon with six or more vertices,
- two resonators, which are coupled together, of the plurality of resonators being arranged such that D<R1+R2 is satisfied, where R1 and R2 represent radii of circumcircles of the broad walls of the two resonators and D represents a center-to-center distance between the two resonators,
- wherein at least one of the plurality of resonators further includes a projection made of a conductor, the projection projecting inward from one of a pair of the broad walls that form the at least one of the plurality of resonators.
6 more elements
A diplexer comprising:
- a first directional coupler that is comprised of a first waveguide and a second waveguide;
- a second directional coupler that is comprised of a third waveguide and a fourth waveguide;
- a first filter that resides between the first waveguide and the third waveguide;
- and
- a second filter that resides between the second waveguide and the fourth waveguide,
- the first filter and the second filter each including a plurality of resonators that are electromagnetically coupled,
- the plurality of resonators each having a broad wall that is in a shape of a circle or a regular polygon with six or more vertices,
- two resonators, which are coupled together, of the plurality of resonators being arranged such that D<R1+R2 is satisfied, where R1 and R2 represent radii of circumcircles of the broad walls of the two resonators and D represents a center-to-center distance between the two resonators,
- wherein:
- the first filter and the second filter each have a passband which is a first frequency band;
- and
- the diplexer further comprises a third filter that is comprised of a plurality of resonators electromagnetically coupled, that has a passband which is a second frequency band different from the first frequency band, and that is connected to an opposite end of the first waveguide from the first filter.
9 more elements
Dependencies are inferred from the claim text.