发明名称 OPTIMIZED UPLINK EFFICIENCIES FOR TRANSMISSION OF SATELLITE DATA
摘要 Systems and methods for characterizing amplifiers. A system for characterizing an amplifier in accordance with the present invention comprises a Gaussian signal source for generating a signal in the frequency domain, a notch filter, coupled to the Gaussian Noise source, wherein the notch filter has a notch at a specified frequency and a frequency bandwidth, the frequency bandwidth encompassing the specified frequency, an Inverse Fast Fourier Transform device, coupled to an output of the notch filter, a normalization device, coupled to the Inverse Fast Fourier Transform device, an amplifier under test, coupled to the normalization device, for amplifying the signal generated by the Gaussian signal source, and a measurement device, coupled to an output of the amplifier, for measuring a power output of the amplifier in the frequency bandwidth and a noise output at the specified notch frequency, and for calculating the ratio between the power output and the noise output.
申请公布号 WO2008048530(A2) 申请公布日期 2008.04.24
申请号 WO2007US21955 申请日期 2007.10.15
申请人 THE DIRECTV GROUP, INC.;ZHOU, GUANGCAI;LIN, TUNG-SHENG;LAI, DENNIS;SANTORU, JOSEPH;CHEN, ERNEST, C.;MAITRA, SHAMIK;COMEAUX, CECILIA 发明人 ZHOU, GUANGCAI;LIN, TUNG-SHENG;LAI, DENNIS;SANTORU, JOSEPH;CHEN, ERNEST, C.;MAITRA, SHAMIK;COMEAUX, CECILIA
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