Circuits for filtering radio-frequency signals
AssigneeSkyworks Solutions, Inc.
InventorDavid Richard Pehlke
Life of this patent
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Abstract
Embodiments of the invention relate to a switching circuit that includes a first signal path for a first frequency range, a second signal path for a second frequency range, and one or more switches. Each of the first and second signal paths may include one or more filters configured to pass a respective region of the first or second frequency ranges. The one or more switches are configured to select one or more signal path filters based on a control signal. Related methods for filtering a radio-frequency signal, radio-frequency modules and wireless devices are also provided.
Claims21
A radio-frequency switching circuit for multiple signal bands, comprising:
- a first signal path for a first frequency range;
- a second signal path for a second frequency range, the first and second frequency ranges being adjacent to each other;
- one or more second signal path filters each configured to pass a respective region of the second frequency range, at least one of the respective regions being smaller than the second frequency range;
- and
- one or more switches configured to select one of the second signal path filters based on a control signal.
A radio-frequency switching circuit, comprising:
- a first signal path for a first frequency range;
- a second signal path for a second frequency range, the first and second frequency ranges being adjacent to each other;
- one or more first signal path filters each configured to pass a respective region of the first frequency range, at least one of the respective regions of the first frequency range being smaller than the first frequency range;
- one or more second signal path filters each configured to pass a respective region of the second frequency range, at least one of the respective regions being smaller than the second frequency range;
- and
- one or more switches configured to select one or more of the first signal path filters and the second signal path filters based on a control signal.
A radio-frequency module comprising:
- a packaging substrate configured to receive a plurality of components;
- and
- a semiconductor die implemented on the packaging substrate, the semiconductor die including a radio-frequency switching circuit including a first signal path for a first frequency range, a second signal path for a second frequency range, the first and second frequency ranges being adjacent to each other, one or more second signal path filters each configured to pass a respective region of the second frequency range, at least one of the respective regions being smaller than the second frequency range, and one or more switches configured to select one of the second signal path filters based on a control signal.
Dependencies are inferred from the claim text.