发明名称 |
Mixer and frequency conversion apparatus for improving phase-mismatching |
摘要 |
A frequency conversion apparatus having a mixer eliminates phase miss-matching between two intermediate frequency (IF) signals having the same frequency and a 90 degree difference in phase. The frequency conversion apparatus for compensating for phase mismatching of first and second IF signal in response to an RF input signal transmitted through an RF input terminal includes a quadrature signal generator (QSG) outputting first and second oscillating frequency signals having a 90 degre difference in phase, a first mixer mixing the RF input signal with a first resultant frequency signal having a first resultant phase and generated from the first oscillating frequency signal and an inverted signal of the second oscillating frequency signal, and a second mixer mixing the RF signal with a second resultant frequency signal having a second resultant phase and generated from the second oscillating frequency signal and an inverted signal of the first second oscillating frequency signal. The frequency conversion apparatus having a mixer improving a signal-to-noise (SN) ratio and increasing an image-rejection ratio by correcting phase miss-matching.
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申请公布号 |
US7181186(B2) |
申请公布日期 |
2007.02.20 |
申请号 |
US20030462609 |
申请日期 |
2003.06.17 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
OH SEUNG MIN;KWON HYO SEOK |
分类号 |
H03D7/18;H04B1/26;H03D3/00;H03D7/14 |
主分类号 |
H03D7/18 |
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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