RADIO FREQUENCY FILTERING CIRCUITRY WITH RESONATORS
First Claim
1. Radio frequency (RF) multiplexer circuitry comprising:
- a first signal path between a first intermediate node and a common node;
a second signal path between a second intermediate node and the common node;
first resonator circuitry connected between the first signal path and ground and configured to allow signals within a first frequency pass band to pass between the first intermediate node and the common node while attenuating signals outside of the first frequency pass band, the first resonator circuitry comprising a first LC resonator and a second LC resonator that is electromagnetically coupled with the first LC resonator such that a coupling factor between the first LC resonator and the second LC resonator is between about 1.0% and 40.0%; and
second resonator circuitry connected between the second signal path and ground and configured to allow signals within a second frequency pass band to pass between the second intermediate node and the common node while attenuating signals outside of the second frequency pass band, the second resonator circuitry comprising a third LC resonator and a fourth LC resonator that is electromagnetically coupled with the third LC resonator such that a coupling factor between the third LC resonator and the fourth LC resonator is between about 1.0% and 40.0%.
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Accused Products
Abstract
RF multiplexer circuitry includes a first signal path coupled between a first intermediate node and a common node, a second signal path coupled between a second intermediate node and the common node, first resonator circuitry coupled between the first signal path and ground, and second resonator circuitry coupled between the second signal path and ground. The first resonator circuitry is configured to allow signals within a first frequency pass band to pass between the first intermediate node and the common node, while attenuating signals outside of the first frequency pass band. The first resonator circuitry includes a first LC resonator. The second resonator circuitry is configured to allow signals within a second frequency pass band to pass between the second intermediate node and the common node, while attenuating signals outside of the second frequency pass band.
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Citations
20 Claims
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1. Radio frequency (RF) multiplexer circuitry comprising:
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a first signal path between a first intermediate node and a common node; a second signal path between a second intermediate node and the common node; first resonator circuitry connected between the first signal path and ground and configured to allow signals within a first frequency pass band to pass between the first intermediate node and the common node while attenuating signals outside of the first frequency pass band, the first resonator circuitry comprising a first LC resonator and a second LC resonator that is electromagnetically coupled with the first LC resonator such that a coupling factor between the first LC resonator and the second LC resonator is between about 1.0% and 40.0%; and second resonator circuitry connected between the second signal path and ground and configured to allow signals within a second frequency pass band to pass between the second intermediate node and the common node while attenuating signals outside of the second frequency pass band, the second resonator circuitry comprising a third LC resonator and a fourth LC resonator that is electromagnetically coupled with the third LC resonator such that a coupling factor between the third LC resonator and the fourth LC resonator is between about 1.0% and 40.0%. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Radio frequency (RF) filtering circuitry comprising:
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multiplexer circuitry comprising; a first signal path between a first intermediate node and a common node; a second signal path between a second intermediate node and the common node; first resonator circuitry coupled between the first signal path and ground and configured to allow signals within a first frequency pass band to pass between the first intermediate node and the common node while attenuating signals outside of the first frequency pass band, the first resonator circuitry comprising a first LC resonator and a second LC resonator that is electromagnetically coupled with the first LC resonator such that a coupling factor between the first LC resonator and the second LC resonator is between about 1.0% and 40.0%; second resonator circuitry coupled between the second signal path and ground and configured to allow signals within a second frequency pass band to pass between the second intermediate node and the common node while attenuating signals outside of the second frequency pass band, the second resonator circuitry comprising a third LC resonator and a fourth LC resonator that is electromagnetically coupled with the third LC resonator such that a coupling factor between the third LC resonator and the fourth LC resonator is between about 1.0% and 40.0%; and acoustic filtering circuitry coupled to the multiplexer circuitry and comprising; a first acoustic filter coupled to the first intermediate node and configured to separate signals within the first frequency pass band into one or more of a first set of sub-bands; and a second acoustic filter coupled to the second intermediate node and configured to separate signals within the second frequency pass band into one or more of a second set of sub-bands. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification