发明名称 |
ONE BIT DIGITAL QUADRATURE MODULATOR |
摘要 |
In a digital Cartesian modulation transmitter, an encoder generates 1-bit logic signals from in-phase and quadrature signals. A single bit digital modulator multiplexes the 1-bit logic signals for Cartesian I/Q modulation. A digital upconverter (DUG) upconverts the multiplexed 1-bit logic signal. A digital power amplifier (DPA) generates a radio frequency (RF) signal based on the upconverted signal. In a digital polar modulation transmitter, an encoder converts a magnitude signal to a first 1-bit logic signal. A digital phase modulator modulates a carrier using a phase signal to generate a second 1-bit logic signal. A DUC upconverts the second 1-bit logic signal. A first-in first-out (FIFO) memory stores the first 1-bit logic signal. A combiner combines angle information contained in the second 1-bit logic signal with magnitude information contained in the first 1-bit logic signal stored in the FIFO memory. A DPA generates an RF signal based on the combined signal. |
申请公布号 |
WO2007106460(A3) |
申请公布日期 |
2007.11.01 |
申请号 |
WO2007US06266 |
申请日期 |
2007.03.12 |
申请人 |
INTERDIGITAL TECHNOLOGY CORPORATION;HAQUE, TANBIR;KAZAKEVICH, LEONID |
发明人 |
HAQUE, TANBIR;KAZAKEVICH, LEONID |
分类号 |
H04L27/36 |
主分类号 |
H04L27/36 |
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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