Back to results
US 10,854,939 B2Granted
Dielectric filter
AssigneeTDK Corporation
InventorsYuta Ashida, Noriyuki Hirabayashi, Shigemitsu Tomaki
Life of this patent
Estimating the term…
Abstract
A dielectric filter has a first input/output port, a second input/output port, an even number of dielectric resonators, and a capacitor for capacitively coupling the first input/output port and the second input/output port. The even number of dielectric resonators are provided between the first input/output port and the second input/output port in circuit configuration, and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other.
Claims8
A dielectric filter comprising:
- a first input/output port;
- a second input/output port;
- an even number of dielectric resonators which are provided between the first input/output port and the second input/output port in circuit configuration and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other;
- and
- a capacitor for capacitively coupling the first input/output port and the second input/output port, wherein
- the even number of dielectric resonators include a first input/output stage resonator which is closest to the first input/output port in circuit configuration, and a second input/output stage resonator which is closest to the second input/output port in circuit configuration, and
- the dielectric filter further comprising a first phase shifter provided between the first input/output port and the first input/output stage resonator in circuit configuration, and a second phase shifter provided between the second input/output port and the second input/output stage resonator in circuit configuration.
4 more elements
A dielectric filter comprising:
- a first input/output port;
- a second input/output port;
- an even number of dielectric resonators which are provided between the first input/output port and the second input/output port in circuit configuration and are configured so that two dielectric resonators adjacent to each other in circuit configuration are magnetically coupled to each other;
- a capacitor for capacitively coupling the first input/output port and the second input/output port;
- and
- a structure for constructing the even number of dielectric resonators and the capacitor, the structure including an even number of resonator body portions corresponding to the even number of dielectric resonators, and a peripheral dielectric portion lying around the even number of resonator body portions, each of the even number of resonator body portions being formed of a first dielectric having a first relative permittivity, the peripheral dielectric portion being formed of a second dielectric having a second relative permittivity lower than the first relative permittivity.
3 more elements
Dependencies are inferred from the claim text.