发明名称 |
BLOCKER FILTERING FOR NOISE-CANCELLING RECEIVER |
摘要 |
<p>Techniques for improving rejection of out-of-band interference in a noise-cancelling receive architecture. In an aspect, capacitors blocking in-band signals and passing through out-of-band signals destructively couple an auxiliary mixer output to a mixer output. In a further aspect, cross-coupling capacitors are provided to couple a first signal path with a second signal path of the noise-cancelling receive signal path. Baseband poly phase cross-coupling blocker filtering is further provided for out-of-band interference cancellation to create notch responses at blocker offset frequencies. The techniques disclosed may readily be adapted for multi-phase local oscillator systems.</p> |
申请公布号 |
WO2015031748(A1) |
申请公布日期 |
2015.03.05 |
申请号 |
WO2014US53396 |
申请日期 |
2014.08.29 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
HEDAYATI, HAJIR;LAU, WING FAT;DUNWORTH, JEREMY DARREN |
分类号 |
H04B1/12;H04B1/10;H04B1/26;H04B1/40;H04B15/06 |
主分类号 |
H04B1/12 |
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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