Tuning multiplexer filters
AssigneeSkyworks Solutions, Inc.
InventorsNan Wu, Yiliu Wang, Stephane Richard Marie Wloczysiak, Bo Yu
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Abstract
Systems and methods for tuning multiplexer filters are disclosed. In one aspect, a multiplexer includes a first filter coupled to a common node, the first filter configured to pass a first band, a second filter coupled to the common node, the second filter configured to pass a second band, and at least one electrical component configured to generate a notch at a frequency between the first band and the second band.
Claims21
A multiplexer for filtering radio frequency signals, the multiplexer comprising:
- a first filter coupled to a common node, the first filter configured to pass a first band, the first filter including one or more matching components configured to rotate a phase of the first filter to lower loading for the first band;
- a second filter coupled to the common node, the second filter configured to pass a second band;
- and
- at least one electrical component configured to generate a notch at a frequency between the first band and the second band, the notch further configured to reduce out of band gamma phase loading resulting from rotating the phase of the first filter from loading the second filter.
A multiplexer for filtering radio frequency signals, the multiplexer comprising:
- a first filter coupled to a common node, the first filter configured to pass a first band, the first filter tuned to rotate a phase of the first filter to lower loading for the first band;
- a second filter coupled to the common node, the second filter configured to pass a second band;
- and
- at least one electrical component configured to generate a notch at a frequency between the first band and the second band, the notch further configured to reduce out of band gamma phase loading resulting from rotating the phase of the first filter from loading the second filter.
A radio frequency module comprising:
- a multiplexer including a first filter coupled to a common node, the first filter configured to pass a first band, the first filter including one or more matching components configured to rotate a phase of the first filter to lower loading for the first band, a second filter coupled to the common node, the second filter configured to pass a second band, and at least one electrical component configured to generate a notch at a frequency between the first band and the second band, the notch further configured to reduce out of band gamma phase loading resulting from rotating the phase of the first filter from loading the second filter;
- and
- an antenna coupled to the multiplexer, the multiplexer and the antenna being enclosed within a common package.
Dependencies are inferred from the claim text.