Title :
A Novel Diode Linearizer for the CDMA Power Amplifier
Author :
Sun, Jia ; Chia, Yan Wah Michael ; Li, Bin
Author_Institution :
Centre for Wireless Communications, National University of Singapore. Email: cwcsunj@leonis.nus.edu.sg
Abstract :
A novel diode linearizer has been developed for the CDMA power amplifier application. Compared with the traditional series diode linearizer, the dynamic range of the compensation of positive amplitude and negative phase is increased and both compensation curves for amplitude and phase become more monotonously change because of the improvement of the input return loss in this novel diode linearizer. Applying this novel diode linearizer to the CDMA power amplifier, 4 dBc in ACPR (Adjacent Channel Power Rejection) and 5 dBc in ICP3 (Third Order Intercept Point) have been achieved at the same output power and PAE test conditions.
Keywords :
Capacitance; Diodes; Dynamic range; Equivalent circuits; High power amplifiers; Impedance; Multiaccess communication; Phase distortion; Power amplifiers; Varactors;
Conference_Titel :
Microwave Conference, 1999. 29th European
Conference_Location :
Munich, Germany
DOI :
10.1109/EUMA.1999.338491
