Measurement Of Distortion In An Amplifier
First Claim
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1. A method, comprising:
- inputting a stimulus signal approximating a bandlimited Gaussian noise signal into an amplifier wherein said signal comprises a notch in a portion of said frequency band; and
measuring amplitude and phase distortion in the notch portion of the frequency band from the output of the amplifier.
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Abstract
Parametric measurement of first- and second-generation telecommunications equipment has been relatively straightforward. The evolution to more complex transmission schemes such as those proposed for third-generation (3G) telecommunications devices can employ the subject methods and apparatus and apply AM-PM test procedures to a multicarrier amplifier RF environment to properly characterize the parametric performance of these transmission systems, particularly those operating in a multicarrier environment.
7 Citations
20 Claims
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1. A method, comprising:
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inputting a stimulus signal approximating a bandlimited Gaussian noise signal into an amplifier wherein said signal comprises a notch in a portion of said frequency band; and measuring amplitude and phase distortion in the notch portion of the frequency band from the output of the amplifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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an arbitrary waveform generator capable of generating a stimulus signal approximating a bandlimited Gaussian noise signal into an amplifier wherein said signal comprises a notch in a portion of said frequency band; and spectrum analyzer capable of measuring amplitude and phase distortion in the notch portion of the frequency band from the output of the amplifier. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A system, comprising:
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means for generating a stimulus signal approximating a bandlimited Gaussian noise signal into an amplifier wherein said signal comprises a notch in a portion of said frequency band; and means for measuring amplitude and phase distortion in the notch portion of the frequency band from the output of the amplifier. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification