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ARTICLES

MODULATION IMPERFECTIONS IN IS54/136 DUAL-MODE CELLULAR RADIO

Typical modulation errors related to the RF and digital sections of a dual-mode (TDMA/AMPS) cellular phone front end, and development of calibration methods to effectively minimize internal modulator errors through analysis of the output signal
May 1, 2000
TECHNICAL FEATURE MODULATION IMPERFECTIONS IN IS54/136 DUAL-MODE CELLULAR RADIO Abstract: Nonideal in-phase and quadrature (IQ) calibration circuits on one hand, and the synthesizer's phase noise spurious response and carrier leakage on the other, affect modulation quality by degrading modulation parameters such as error vector magnitude (EVM), spectral mask and...
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