发明名称 |
RF transmitter having improved out of band attenuation |
摘要 |
A radio frequency transmitter includes a digital baseband and coding module, an inverse fast Fourier transform (IFFT) module, a complex digital filter, a complex digital-to-analog converter and a radio frequency modulation module. The digital baseband and coding module is operably coupled to convert outbound data into outbound symbols in accordance with a baseband encoding protocol. The IFFT module is operably coupled to convert the outbound symbols into a complex time domain sample sequence. The complex digital filter is operably coupled to filter the complex time domain sequence such that signal strength of outbound RF signals in an exclusion RF band is at or below a specified signal strength with negligible attenuation on in-band signal strength.
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申请公布号 |
US2005159114(A1) |
申请公布日期 |
2005.07.21 |
申请号 |
US20040757931 |
申请日期 |
2004.01.15 |
申请人 |
TRACHEWSKY JASON A.;CORRY ALAN |
发明人 |
TRACHEWSKY JASON A.;CORRY ALAN |
分类号 |
H04B1/02;H04B1/04;H04L7/04;H04L7/08;H04L27/06;H04L27/26;(IPC1-7):H04B1/02 |
主分类号 |
H04B1/02 |
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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