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 |