发明名称 |
Power-efficient spectrum shaping for a magnetic link |
摘要 |
Various embodiments relate to a transmission circuit and related method of shaping the transmission spectrum of a carrier signal. The transmission circuit may comprise a plurality of switching amplifier stages that are controlled by a modulation sequence produced by a transmission (TX) modulator. The TX modulator may receive the transmission data as a sequence of bit groups and may produce a modulation sequence including a plurality of control bits that may drive each of the switching amplifier stages. In some embodiments, one or more pulse-shaping filters may modify in-phase (I) and quadrature (Q) phase components of the transmission data. The modified components may directly shape spectral content of the output signal produced by a transmission driving circuit. Higher quantities of amplifier stages included in the transmission driving circuit may add higher granularity to the shape of the spectrum of the output signal. |
申请公布号 |
US8174333(B1) |
申请公布日期 |
2012.05.08 |
申请号 |
US20110984375 |
申请日期 |
2011.01.04 |
申请人 |
PHILIPS NORBERT;THOEN STEVEN MARK;NXP B.V. |
发明人 |
PHILIPS NORBERT;THOEN STEVEN MARK |
分类号 |
H03C3/00 |
主分类号 |
H03C3/00 |
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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