Invention Grant
- Patent Title: Carrier aggregation amplifier with dual gain control
- Patent Title (中): 具有双增益控制的载波汇聚放大器
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Application No.: US14643854Application Date: 2015-03-10
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Publication No.: US09479131B2Publication Date: 2016-10-25
- Inventor: Ahmed Abdel Monem Youssef , Ehab Ahmed Sobhy Abdel Ghany , Li-Chung Chang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: Qualcomm Incorporated
- Current Assignee: Qualcomm Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Toler Law Group, PC
- Main IPC: H03G3/30
- IPC: H03G3/30 ; H03F3/19 ; H03F3/68 ; H03G1/00 ; H04B1/00 ; H03F1/22 ; H03F3/193

Abstract:
An apparatus includes a first amplification stage configured to amplify a first carrier signal and a second amplification stage configured to amplify a second carrier signal. The first amplification stage is direct-current (DC) coupled to the second amplification stage. First circuitry is coupled to the first amplification stage and configured to control a first gain of the first amplification stage. The first circuitry includes a first gain control transistor configured to selectively divert a first bleed current from a first output of the first amplification stage. Second circuitry is coupled to the second amplification stage and configured to control a second gain of the second amplification stage independently of the first gain. The second circuitry includes a second gain control transistor configured to selectively divert a second bleed current from a second output of the second amplification stage.
Public/Granted literature
- US20150341007A1 CARRIER AGGREGATION AMPLIFIER WITH DUAL GAIN CONTROL Public/Granted day:2015-11-26
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