发明名称 |
Systems, methods, and apparatuses for reducing interference at the front-end of a communications receiving device |
摘要 |
Embodiments of the invention may provide for reducing interference in the front-end of a communications receiver. The cancellation circuitry may be utilized in conjunction with a preliminary rejection filter for improved rejection of out-of-band interference from other radio services or circuitry. The cancellation circuit may be placed in parallel with the preliminary rejection filter and may enhance suppression at the interference frequency by matching the gain and phase of the preliminary rejection filter prior to subtracting the matched signal from the preliminary rejection filter output. The cancellation circuit need not necessary know beforehand the characteristics of the preliminary rejection filter, the interference source, or the coupling mechanism, as it may adapt to unknown or varying interferers by adapting the matching gain and phase values based on the output of the preliminary rejection filter at tap points occurring both before and after application of the cancellation signal.
|
申请公布号 |
US8521090(B2) |
申请公布日期 |
2013.08.27 |
申请号 |
US20100731840 |
申请日期 |
2010.03.25 |
申请人 |
KIM ANDREW JOO;PARK YUNSEO;YIM SEONGMO;HUR YOUNGSIK;SAMSUNG ELECTRO-MECHANICS |
发明人 |
KIM ANDREW JOO;PARK YUNSEO;YIM SEONGMO;HUR YOUNGSIK |
分类号 |
H04B1/00;H04B1/44 |
主分类号 |
H04B1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|