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US 11,996,875 B2Granted
Filters including bandpass filter transmission lines
AssigneeCommScope Italy S.r.l.
InventorsRoman Tkadlec, Stefano Tamiazzo, Marco Riva
Life of this patent
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Abstract
Filters include a housing having an input port and an output port and a plurality of resonant cavities within the housing. Each resonant cavity may include a respective notch resonator. The filter may further include a bandpass filter that includes a plurality of bandpass resonators, the bandpass filter extending between the input port and the output port. The bandpass filter may replace a transmission line that is included in conventional filters.
Claims20
A filter, comprising:
- a housing having an input port and an output port;
- a plurality of resonant cavities within the housing, each resonant cavity including a respective notch resonator;
- and
- a bandpass filter that includes a plurality of bandpass resonators, the bandpass filter extending between the input port and the output port,
- wherein the filter is an interference mitigation filter that includes a passband and a stopband, and
- wherein the notch resonators are configured to generate a plurality of nulls within the stopband,
- wherein a first of the resonant cavities that is configured to generate a first of the nulls that is closest to the passband is not electrically adjacent a second of the resonant cavities that is configured to generate a second of the nulls that is second closest to the passband.
4 more elements
A filter, comprising:
- a housing having an input port and an output port;
- a plurality of resonant cavities within the housing, each resonant cavity including a respective notch resonator;
- and
- a bandpass filter that includes a plurality of bandpass resonators, the bandpass filter extending between the input port and the output port,
- wherein the filter is an interference mitigation filter that includes a passband and a stopband, and
- wherein the notch resonators are configured to generate a plurality of nulls within the stopband,
- wherein a first resonant cavity that is electrically closest to the input port is configured to generate a first of the plurality of nulls and a second resonant cavity that is electrically closest to the output port is configured to generate a second of the plurality of nulls, wherein the first of the plurality of nulls and the second of the plurality of nulls are the two nulls that are closest to the passband.
4 more elements
A filter, comprising:
- a housing having an input port and an output port;
- a plurality of resonant cavities within the housing, each resonant cavity including a respective notch resonator;
- and
- a bandpass filter that includes a plurality of bandpass resonators, the bandpass filter extending between the input port and the output port,
- wherein the filter is an interference mitigation filter that includes a passband and a stopband, and
- wherein the notch resonators are configured to generate a plurality of nulls within the stopband,
- wherein a first of the resonant cavities that is configured to generate a first of the plurality of nulls that is farthest from the passband is electrically adjacent a second of the resonant cavities that is configured to generate a second of the plurality of nulls that is second farthest from the passband.
4 more elements
A filter, comprising:
- a housing having an input port and an output port;
- a transmission line that extends between the input port and the output port;
- and
- a plurality of resonant cavities within the housing, each resonant cavity including a respective first resonator,
- wherein the transmission line comprises a bandpass filter that includes a plurality of second resonators, and
- wherein all of the resonant cavities include a window that opens to the bandpass filter,
- wherein the second resonators are disposed between a first wall and a second wall, and at least some of the resonant cavities are on one side of the first wall,
- wherein windows are provided in the first wall that allow radio frequency (“RF”) energy to pass from the bandpass filter into the respective resonant cavities, and no windows are provided between adjacent ones of the resonant cavities, and
- wherein the second resonators are arranged in a staggered line that extends substantially from the input port to the output port.
6 more elements
Dependencies are inferred from the claim text.