Invention Grant
US09490858B2 Transmitter capable of reducing local oscillation leakage and in-phase/quadrature-phase (I/Q) mismatch and adjusting methods thereof
有权
能够减少本地振荡泄漏和同相/正交相位（I / Q）失配的发射器及其调整方法
- Patent Title: Transmitter capable of reducing local oscillation leakage and in-phase/quadrature-phase (I/Q) mismatch and adjusting methods thereof
- Patent Title (中): 能够减少本地振荡泄漏和同相/正交相位（I / Q）失配的发射器及其调整方法
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Application No.: US12237827Application Date: 2008-09-25
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Publication No.: US09490858B2Publication Date: 2016-11-08
- Inventor: Hong-Ta Hsu , Ying-Hsi Lin
- Applicant: Hong-Ta Hsu , Ying-Hsi Lin
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: McClure, Qualey & Rodack, LLP
- Priority: TW96135951A 20070927
- Main IPC: H04B1/16
- IPC: H04B1/16 ; H04B1/04 ; H04B1/30 ; H04L27/00
Abstract:
An adjusting method for reducing local oscillation leakage or I/Q mismatch in a transmitter includes the steps of: (a) detecting a current extent of local oscillation leakage or I/Q mismatch; (b) determining if an adjusting direction is correct with reference to the current extent of local oscillation leakage or I/Q mismatch thus detected, maintaining the adjusting direction if correct, and reversing the adjusting direction upon determining that the adjusting direction is incorrect; and (c) adjusting a control signal according to the adjusting direction.
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