- Patent Title: Continuous time pre-cursor and post-cursor compensation circuits
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Application No.: US15434791Application Date: 2017-02-16
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Publication No.: US10193714B2Publication Date: 2019-01-29
- Inventor: Hiroshi Kimura , Haoqiong Chen , Yehui Sun
- Applicant: Avago Technologies International Sales Pte. Limited
- Applicant Address: SG Singapore
- Assignee: Avago Technologies International Sales Pte. Limited
- Current Assignee: Avago Technologies International Sales Pte. Limited
- Current Assignee Address: SG Singapore
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H03H7/30
- IPC: H03H7/30 ; H04L25/03 ; H03K19/0175 ; H03K17/16 ; H04L27/01

Abstract:
To improve on power and bandwidth limitations associated with conventional feedforward equalizer (FFE) implementations, the present disclosure provides intersymbol interference (ISI) compensation circuits that do not use delay cells common to FFE structures. In one example, the compensation circuit of the present disclosure comprises a two stage amplifier. Each stage of the amplifier is implemented using a differential pair with degeneration. One of the amplifier stages has a transfer function with a zero in the left half of the s-domain, also called the s-plane, and the other amplifier has a transfer function with a zero in the right half of the s-domain. The amplifier stage with the zero in the left half of the s-domain can be used to provide post-cursor ISI compensation, and the amplifier stage with the zero in the right half of the s-domain can be used to provide pre-cursor ISI compensation.
Public/Granted literature
- US20180234270A1 Continuous Time Pre-Cursor and Post-Cursor Compensation Circuits Public/Granted day:2018-08-16
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