Method and apparatus of compensating imbalance of a modulator
First Claim
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1. An apparatus comprising:
- a modulator to generate a distorted modulated signal based on a pair of calibration signals;
a detector to detect an envelope of the distorted modulated signal; and
a processor to generate calibration parameters able to compensate an imbalance of the modulator.
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Abstract
Briefly, a method and apparatus to compensate an imbalance of a modulator by providing calibration parameters to a calibration network. The modulator may receive a pair of predetermined sinusoidal in-phase and quadrature signals and output a distorted modulated signal. A processor may process spectral parameters at first and second harmonics of a detected envelope signal of the distorted modulated signal may generate the calibration parameters.
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Citations
21 Claims
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1. An apparatus comprising:
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a modulator to generate a distorted modulated signal based on a pair of calibration signals;
a detector to detect an envelope of the distorted modulated signal; and
a processor to generate calibration parameters able to compensate an imbalance of the modulator. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method comprising:
providing calibration parameters to a calibration network by modulating a pair of predetermined sinusoidal signals and measuring spectral parameters at first and second harmonics of a detected envelope signal of a modulated signal. - View Dependent Claims (8, 9, 10)
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11. An apparatus comprising:
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a modulator to generate a distorted modulated signal according to a pair of calibration signals;
a processor to generate calibration parameters able to compensate an imbalance of the modulator; and
a dipole antenna to transmit a modulated signal compensated by the calibration parameters. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An article comprising:
- a storage medium, having stored thereon instructions, that when executed, result in;
providing calibration parameters to a calibration network by modulating a pair of predetermined sinusoidal signals and measuring spectral parameters at first and second harmonics of a detected envelope signal of a modulated signal. - View Dependent Claims (19, 20, 21)
- a storage medium, having stored thereon instructions, that when executed, result in;
Specification