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US 12,603,408 B2Granted
Cavity filter for radio frequency wireless communication
AssigneeNexwave Inc
InventorJin-Wan Jeon
Life of this patent
Estimating the term…
Abstract
A cavity filter for RF wireless communication is proposed. The cavity filter includes a filter housing provided in a form of a box that is open at a top thereof, and including a bottom plate and a side plate extending upwards from an outer end of the bottom plate, a plurality of resonance elements arranged on the bottom plate provided on the filter housing, and a PCB cover connected to the side plate provided on the filter housing to cover a top of the filter housing, and including a plurality of electrode patterns formed over the plurality of resonance elements to adjust design frequency characteristics, thus allowing the frequency band of the cavity filter to be finely adjusted.
Claims17
A cavity filter for RF wireless communication, the cavity filter comprising:
- a filter housing provided in a form of a box that is open at a top thereof, and including a bottom plate and a side plate extending upwards from an outer end of the bottom plate;
- a plurality of resonance elements arranged on the bottom plate provided on the filter housing;
- and
- a PCB cover connected to the side plate provided on the filter housing to cover a top of the filter housing, and including a plurality of electrode patterns formed over the plurality of resonance elements to adjust design frequency characteristic,
- wherein the PCB cover comprises:
- a lower substrate provided on an upper portion of the filter housing;
- a first corresponding electrode provided on a lower surface of the lower substrate to be spaced apart from the resonance element;
- a first ground electrode provided on the lower surface of the lower substrate while being outside the first corresponding electrode to be spaced apart therefrom, and electrically connected to the filter housing;
- a second corresponding electrode provided on an upper surface of the lower substrate to be electrically connected to the first corresponding electrode;
- a plurality of first split electrodes provided on the upper surface of the lower substrate while being outside the second corresponding electrode to be spaced apart therefrom;
- a second ground electrode provided on the upper surface of the lower substrate while being outside the plurality of first split electrodes to be spaced apart therefrom, and electrically connected to the first ground electrode;
- an upper substrate provided on the lower substrate, and provided on an upper surface of the second ground electrode;
- a third ground electrode provided on an upper surface of the upper substrate, and electrically connected to the first ground electrode and the second ground electrode;
- and
- a cover provided on the third ground electrode to cover a structure.
12 more elements
A cavity filter for RF wireless communication, the cavity filter comprising:
- a filter housing provided in a form of a box that is open at a top thereof, and including a bottom plate and a side plate extending upwards from an outer end of the bottom plate;
- a plurality of resonance elements arranged on the bottom plate provided on the filter housing;
- and
- a PCB cover connected to the side plate provided on the filter housing to cover a top of the filter housing, and including a plurality of electrode patterns formed over the plurality of resonance elements to adjust design frequency characteristic,
- wherein the PCB cover comprises:
- a multilayered substrate provided on an upper portion of the filter housing;
- a first corresponding electrode provided on a lower surface of the multilayered substrate to be spaced apart from the resonance element;
- a first ground electrode provided on the lower surface of the multilayered substrate while being outside the first corresponding electrode to be spaced apart therefrom, and electrically connected to the filter housing;
- a second corresponding electrode provided as an inner layer of the multilayered substrate to be electrically connected to the first corresponding electrode;
- a plurality of first split electrodes provided as the inner layer of the multilayered substrate while being outside the second corresponding electrode to be spaced apart therefrom;
- a second ground electrode provided as the inner layer of the multilayered substrate while being outside the plurality of first split electrodes to be spaced apart therefrom, and electrically connected to the first ground electrode;
- a third corresponding electrode provided on an upper surface of the multilayered substrate, and electrically connected to the second ground electrode;
- a plurality of second split electrodes provided on the upper surface of the multilayered substrate while being outside the third corresponding electrode to be spaced apart therefrom, and electrically connected to the plurality of first split electrodes;
- a third ground electrode provided on the upper surface of the multilayered substrate, and electrically connected to the first ground electrode and the second ground electrode;
- and
- a cover provided on the third ground electrode to cover a structure.
13 more elements
Dependencies are inferred from the claim text.