Invention Grant
- Patent Title: Power efficient noise-coupled delta-sigma modulator
- Patent Title (中): 功率有效的噪声耦合Δ-Σ调制器
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Application No.: US14485641Application Date: 2014-09-12
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Publication No.: US09184765B1Publication Date: 2015-11-10
- Inventor: Yan Wang , Qubo Zhou
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Arent Fox LLP
- Main IPC: H03M3/00
- IPC: H03M3/00 ; H03M1/12 ; H04N19/126 ; H03M1/00

Abstract:
A method and apparatus for a feed-forward delta-sigma modulator are provided. The apparatus includes a first adder configured to receive a feedback signal and an input signal and a first integrator configured to receive an output from the first adder. The apparatus also includes a noise-coupled summer/integrator (NCSI). The NCSI includes a second adder configured to receive a differentiation path from the first integrator, an output from the first integrator, and a delayed feedback path from the output of a second integrator. The NCSI also includes the second integrator configured to receive an output from the second adder. The apparatus also includes a quantizer configured to receive the output of the second integrator, feed back the output to the first adder and the NCSI and produce the output from the feed-forward delta-sigma modulator.
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