发明名称 |
Demodulation structure and method |
摘要 |
The present invention relates to a demodulation structure and method for downconverting and demodulating a digitally modulated signal So, with a local oscillator means (1; 5; 8) for providing a local oscillator signal Slo a mixer means (2) for mixing said local oscillator signal Slo and said digitally modulated signal S0 in order to obtain a mixed signal, a lowpass filter means (3) for lowpass filtering the mixed signal from the mixer means (2) and an analog-to-digital converting means (4) for converting the filtered signal from the lowpass filter means (3) into a downconverted and demodulated digital signal Sl, whereby the local oscillator signal is set in respect to the modulated digital signal so that the downconverted and demodulated digital signal output from the analog-to-digital converting means comprises to serially arranged information parts. The present demodulation structure provides a very simple structure with improved amplitude and phase imbalances.
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申请公布号 |
US6724246(B2) |
申请公布日期 |
2004.04.20 |
申请号 |
US20010767124 |
申请日期 |
2001.01.22 |
申请人 |
SONY INTERNATIONAL (EUROPE) GMBH |
发明人 |
OBERSCHMIDT GERALD;BRANKOVIC VESELIN;KRUPEZEVIC DRAGAN;KONSCHAK TINO;DOELLE THOMAS |
分类号 |
H04L27/227;H03D3/00;(IPC1-7):H03D7/00 |
主分类号 |
H04L27/227 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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