Title :
Carrier leakage calibration in DCT
Author :
Tedjini, S. ; Gaoua, S. ; Touhami, R. ; Yagoub, M.C.E. ; Bellaouar, A.
Author_Institution :
Dept. of Instrum., Univ. of Sci. & Technol., Algiers, Algeria
Abstract :
In this paper, an improved version of the digital calibration method for carrier leakage, which is caused by the DC offset on direct conversion transmitter, is proposed. We have used a power detector for estimating the DC offset. After, we have injected a compensation voltage for eliminating this DC offset. In order to validate our technique, a new direct conversion transmitter that operates at 2 GHz, is proposed. The simulation and the implementation of the calibration were performed using the Agilent - ADS software.
Keywords :
analogue-digital conversion; calibration; modulators; radio transmitters; Agilent ADS software; DC offset; carrier leakage calibration; digital calibration method; direct conversion transmitter; power detector; Calibration; Discrete cosine transforms;
Conference_Titel :
Microwave Symposium (MMS), 2009 Mediterrannean
Conference_Location :
Tangiers
Print_ISBN :
978-1-4244-4664-3
Electronic_ISBN :
978-1-4244-4665-0
DOI :
10.1109/MMS.2009.5409817
