Band-pass filter
AssigneeTDK Corporation
InventorsYuta ASHIDA, Noriyuki HIRABAYASHI, Shigemitsu TOMAKI
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Abstract
A band-pass filter includes a main body, five resonators, a shield, and a partition. The main body is formed of a dielectric. The partition is formed of a conductor. The five resonators are configured so that capacitive coupling is established between every two of the resonators adjacent to each other in circuit configuration. Each of the five resonators includes a resonator conductor portion. A first stage resonator and a fifth stage resonator are magnetically coupled to each other although not adjacent to each other in circuit configuration. The partition extends to pass between the respective resonator conductor portions of the first stage resonator and the fifth stage resonator, and is electrically connected to the shield.
Claims14
A band-pass filter comprising:
- a main body formed of a dielectric;
- a first input/output port and a second input/output port integrated with the main body;
- three or more resonators provided within the main body, located between the first input/output port and the second input/output port in circuit configuration, and configured so that electromagnetic coupling is established between every two of the resonators adjacent to each other in circuit configuration;
- a shield formed of a conductor and integrated with the main body;
- and
- a partition formed of a conductor, provided within the main body, and electrically connected to the shield, wherein
- the shield includes a first portion and a second portion spaced from each other in a first direction, and a connecting portion connecting the first and second portions,
- the first portion, the second portion and the connecting portion are arranged to surround the three or more resonators,
- the three or more resonators include a first resonator and a second resonator that are configured to be magnetically coupled to each other although not adjacent to each other in circuit configuration,
- the first resonator includes a first resonator conductor portion formed of a conductor,
- the second resonator includes a second resonator conductor portion formed of a conductor,
- each of the first and second resonator conductor portions extends in a direction intersecting the first direction,
- the partition is in contact with the first portion and the second portion, and
- at least part of the partition extends to pass between the first resonator conductor portion and the second resonator conductor portion.
Dependencies are inferred from the claim text.