Invention Grant
- Patent Title: Method for recovering a baseband signal from an RF signal
- Patent Title (中): 从RF信号中恢复基带信号的方法
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Application No.: US11853822Application Date: 2007-09-12
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Publication No.: US07924946B2Publication Date: 2011-04-12
- Inventor: Yum-Cheng Chang
- Applicant: Yum-Cheng Chang
- Applicant Address: TW Science Based Industrial Park, Hsinchu
- Assignee: Fitipower Integrated Technology, Inc.
- Current Assignee: Fitipower Integrated Technology, Inc.
- Current Assignee Address: TW Science Based Industrial Park, Hsinchu
- Agent Winston Hsu; Scott Margo
- Main IPC: H04L27/06
- IPC: H04L27/06 ; H03D1/24
Abstract:
By shifting an RF signal to IQ components of a modulated baseband signal directly, the zero-IF technology and IQ interface are applied in ATSC, NTSC, and PAL systems, and VSB and SSB modulations. The mathematic calculations are based on Fourier transform for shifting the RF signal and for recovering a baseband signal from the modulated baseband signal.
Public/Granted literature
- US20090067544A1 METHOD FOR RECOVERING A BASEBAND SIGNAL FROM AN RF SIGNAL Public/Granted day:2009-03-12
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