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Wideband Demodulator Based on Five-Port Correlator for Channel Sounding Applications
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Journal of Electromagnetic Analysis and Applications·Volume 05 (2013)·Pages 79–84·Published 28 February 2013·DOI10.4236/jemaa.2013.52013
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Abstract
We present in this paper a wideband RF demodulator using a five-port correlator and a power detector for channel sounding applications. The demodulator has been fabricated using microstrip components. The correlator receives from the five-port qualities that allow it to be low-cost and less sensitive to the phase and amplitude imbalances. A calibration procedure is proposed to find the complex envelope of the RF signal applied at the input of the five-port correlator. Simulation with Advanced Design System software and measurement results have been conducted to demonstrate its capabilities as a RF signal demodulator operating in a wideband around 2.4 GHz frequency.
KeywordsCalibration ProcedureChannel SounderDiode Power DetectorFive-Port Correlator
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