Multiple subscriber identity module (MSIM) with carrier aggregation (CA) in a downlink pipe limited transceiver
The transceiver system with multiple frequency synthesizers and multiplexers optimizes power usage and area by efficiently sharing transceivers for multiple SIMs, supporting dual SIM dual active mode and carrier aggregation, enhancing communication efficiency.
WO2026135901A1PCT designated stage Publication Date: 2026-06-25QUALCOMM INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2025-11-18
- Publication Date
- 2026-06-25
Smart Images
Figure US2025055956_25062026_PF_FP_ABST
Abstract
A system includes a first frequency synthesizer configured to generate a first local oscillator (LO) signal and a second frequency synthesizer configured to generate a second LO signal. The system also includes a first receive circuit configured to receive a first carrier and a second carrier for a first subscriber and mix the first carrier and the second carrier with the first LO signal or the second LO signal. The system also includes a second receive circuit configured to receive a third carrier for a second subscriber and mix the third carrier with the first LO signal or the second LO signal. The system further includes a first multiplexer configured to selectively couple the first LO signal or the second LO signal to the first receive circuit and a second multiplexer configured to selectively couple the first LO signal or the second LO signal to the second receive circuit.
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