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 :
calibration; discrete cosine transforms; radio transmitters; Agilent-ADS software; DC offset estimation; DCT; RF transmitters; carrier leakage calibration; digital calibration method; direct conversion transmitter; discrete cosine transforms; frequency 2 GHz; voltage compensation; Artificial intelligence; Calibration; Circuits and systems; Degradation; Detectors; Discrete cosine transforms; Instruments; Radio frequency; Transmitters; Voltage;
Conference_Titel :
Signals, Circuits and Systems (SCS), 2009 3rd International Conference on
Conference_Location :
Medenine
Print_ISBN :
978-1-4244-4397-0
Electronic_ISBN :
978-1-4244-4398-7
DOI :
10.1109/ICSCS.2009.5414149
