Invention Grant
- Patent Title: Configurable pre-emphasis component for transmission circuitry
- Patent Title (中): 用于传输电路的可配置预加重组件
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Application No.: US13909478Application Date: 2013-06-04
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Publication No.: US08953711B2Publication Date: 2015-02-10
- Inventor: Haojen Cheng , Chiao Cheng Huang , Hao 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: DeLizio Gilliam, PLLC
- Main IPC: H04L25/03
- IPC: H04L25/03 ; H04L27/36 ; H03F1/32

Abstract:
A configurable pre-emphasis filter component may be configured based upon measured frequency response (e.g., filter effect) associated with at least one analog filter positioned between a digital predistortion component and a power amplification component of a transmission circuitry. The frequency response may be measured using a calibration signal sent via the transmission circuitry, a loopback circuit, and a reception circuitry. Calibration circuitry may be used with one or more loopback circuits to measure the frequency response of various analog components of the transmission circuitry. The calibration circuitry may also include logic to determine a configuration for the PEF component based upon the measured frequency response.
Public/Granted literature
- US20140355714A1 CONFIGURABLE PRE-EMPHASIS COMPONENT FOR TRANSMISSION CIRCUITRY Public/Granted day:2014-12-04
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