SYSTEMS AND METHODS FOR REDUCING FILTER INSERTION LOSS WHILE MAINTAINING OUT-OF-BAND ATTENUATION
First Claim
1. A system for processing radio-frequency (RF) signals, the system comprising:
- a plurality of signal paths configured to accommodate multiple frequency bands, each of the multiple bands having a passband; and
a filter circuit disposed along each of the signal paths, at least one of the filter circuits segmented into two or more segments that substantially cover the passband corresponding to the filter circuit, the at least one segmented filter circuit configured to provide a desired attenuation of out-of-band interferers and a desired insertion loss level.
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Accused Products
Abstract
Disclosed are systems and methods for reducing filter insertion loss while maintaining out-of-band attenuation. In some embodiments, a system can be configured for processing of radio-frequency (RF) signals. The system can include a plurality of signal paths configured to accommodate multiple frequency bands, with each of the multiple bands having a passband. The system can further include a filter circuit disposed along each of the signal paths. At least one of the filter circuits can be segmented into two or more segments that substantially cover the passband corresponding to the filter circuit. The segmented filter circuit can be configured to provide a desired attenuation of out-of-band interferers and a desired insertion loss level. In some embodiments, the signal paths can include receive (Rx) paths.
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Citations
20 Claims
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1. A system for processing radio-frequency (RF) signals, the system comprising:
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a plurality of signal paths configured to accommodate multiple frequency bands, each of the multiple bands having a passband; and a filter circuit disposed along each of the signal paths, at least one of the filter circuits segmented into two or more segments that substantially cover the passband corresponding to the filter circuit, the at least one segmented filter circuit configured to provide a desired attenuation of out-of-band interferers and a desired insertion loss level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A radio-frequency (RF) module comprising:
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a packaging substrate configured to receive a plurality of components; a filter system disposed on the packaging substrate and having a plurality of filter circuits configured to accommodate multiple frequency bands, at least one of the filter circuits segmented into two or more segments that substantially cover a passband associated with the segmented filter circuit to provide a desired attenuation of out-of-band interferers and a desired insertion loss level; and a plurality of connectors configured to provide electrical connections between the filter system and the packaging substrate.
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20. A radio-frequency (RF) device comprising:
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a transceiver configured to process RF signals in multiple frequency bands; one or more antennas in communication with the transceiver to facilitate transmission and reception of the RF signals; and a filter system connectable to the transceiver and the one or more antennas, the filter system having a plurality of filter circuits configured to accommodate the multiple frequency bands, at least one of the filter circuits segmented into two or more segments that substantially cover a passband associated with the segmented filter circuit to provide a desired attenuation of out-of-band interferers and a desired insertion loss level.
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Specification