TITLE:
Wideband Demodulator Based on Five-Port Correlator for Channel Sounding Applications
AUTHORS:
Imen Sfar, Lotfi Osman, Ali Gharsallah
KEYWORDS:
Calibration Procedure; Channel Sounder; Diode Power Detector; Five-Port Correlator
JOURNAL NAME:
Journal of Electromagnetic Analysis and Applications,
Vol.5 No.2,
February
28,
2013
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.