Back to results
US 2026/0291465 A1Published application
Multiplexer filter with reduced out of band impedance
AssigneeSkyworks Solutions, Inc.
InventorsNan Wu, Yiliu Wang, Stephane Richard Marie Wloczysiak, Bo Yu
Life of this patent
Estimating the term…
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
(canceled)
A multiplexer circuit comprising:
- a first filter coupled to a common node and configured to pass a first band;
- one or more matching components configured to rotate a phase of the first filter closer to open impedance as illustrated on a Smith chart;
- a second filter coupled to the common node and configured to pass a second band;
- and
- a first notch filter configured to generate a notch at a frequency between the first band and the second band and to tune the first band without significantly affecting tuning of the second band.
2 more elements
A multiplexer circuit configured for carrier aggregation:
- a first filter coupled to a common node and configured to pass a first band, the first filter tuned to rotate a phase of the first filter closer to open impedance as illustrated on a Smith chart;
- a second filter coupled to the common node and configured to pass a second band;
- and
- a first notch filter configured to generate a notch at a frequency between the first band and the second band and to tune the first band without significantly affecting tuning of the second band.
1 more element
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 tuned to rotate a phase of the first filter closer to open impedance as illustrated on a Smith chart, the multiplexer further including a second filter coupled to the common node, the second filter configured to pass a second band, and the multiplexer further including a first notch filter configured to generate a notch at a frequency between the first band and the second band and to tune the first band without significantly affecting tuning of the second band;
- and
- a module package, the multiplexer enclosed within the module package.
Dependencies are inferred from the claim text.