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 including bands B1, B2, B3 and B4 associated with a 3GPP communication standard, each of the multiple frequency bands having a passband; and
a plurality of filter circuits, a corresponding filter circuit of the plurality of filter circuits disposed along each of the signal paths, at least one segmented filter circuit of the plurality of filter circuits segmented into two or more segments configured to provide attenuation of out-of-band interferers, the plurality of filter circuits arranged to partition at least one receive band of the multiple frequency bands into two overlapping frequency segments received on different ones of the signal paths, the plurality of filter circuits arranged to partition bands B1, B2, B3 and B4 such that receive (Rx) bands of bands B1, B2, and B3 each include two overlapping frequency segments received on different ones of the signal paths.
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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
19 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 including bands B1, B2, B3 and B4 associated with a 3GPP communication standard, each of the multiple frequency bands having a passband; and a plurality of filter circuits, a corresponding filter circuit of the plurality of filter circuits disposed along each of the signal paths, at least one segmented filter circuit of the plurality of filter circuits segmented into two or more segments configured to provide attenuation of out-of-band interferers, the plurality of filter circuits arranged to partition at least one receive band of the multiple frequency bands into two overlapping frequency segments received on different ones of the signal paths, the plurality of filter circuits arranged to partition bands B1, B2, B3 and B4 such that receive (Rx) bands of bands B1, B2, and B3 each include two overlapping frequency segments received on different ones of the signal paths. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A radio-frequency (RF) module comprising:
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a packaging substrate configured to receive a plurality of components and including a plurality of signal paths configured to accommodate multiple frequency bands including bands B1, B2, B3 and B4 associated with a 3GPP communication standard; a filter system disposed on the packaging substrate and having a plurality of filter circuits configured to accommodate the multiple frequency bands, at least one segmented filter circuit of the plurality of filter circuits segmented into two or more segments configured to provide attenuation of out-of-band interferers, the plurality of filter circuits arranged to partition at least one receive band of the multiple frequency bands into two overlapping frequency segments received on different ones of the signal paths, the plurality of filter circuits arranged to partition bands B1, B2, B3 and B4 such that Rx bands of bands B1, B2, and B3 each include two overlapping frequency segments received on different ones of the signal paths; and a plurality of connectors configured to provide electrical connections between the filter system and the packaging substrate. - View Dependent Claims (16, 17)
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18. A radio-frequency (RF) device comprising:
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a transceiver configured to process RF signals in multiple frequency bands including bands B1, B2, B3 and B4 associated with a 3GPP communication standard; one or more antennas in communication with the transceiver to facilitate transmission and reception of the RF signals via a plurality of signal paths configured to accommodate the multiple frequency bands; 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 segmented filter circuit of the plurality of filter circuits segmented into two or more segments configured to provide attenuation of out-of-band interferers, the plurality of filter circuits arranged to partition at least one receive band of the multiple frequency bands into two overlapping frequency segments received on different ones of the signal paths, the plurality of filter circuits arranged to partition bands B1, B2, B3 and B4 such that Rx bands of bands B1, B2, and B3 each include two overlapping frequency segments received on different ones of the signal paths. - View Dependent Claims (19)
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Specification