Cross cancellation technique employing an error amplifier [Letter]

Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Jeong, Yongchae, Kenney, James Stevenson and Kim, Chul-Dong 2008. Cross cancellation technique employing an error amplifier [Letter]. IEEE Microwave and Wireless Components Letters 18 (7) , pp. 488-490.

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Abstract

In this letter, we propose a new distortion cancellation mechanism for a balanced power amplifier (PA) structure using the cross cancellation technique employing an error amplifier. The proposed cross cancellation balanced linear PA is implemented in the IMT-2000 ( 0 = 2.14 GHz) band. With commercial PAs with a peak power of 240 W for base-station application, the proposed system shows 18.6 dB improvement at an average output power of 40 dBm for adjacent channel leakage ratio measurement with wideband code division multiple access 4FA signal. The efficiency of the proposed structure is about 2% higher than the conventional feedforward amplifier for modulated carrier.

Item Type:	Article
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Balanced power amplifier (BPA), cross cancellation, feedforward technique (FFW), linearization.
Publisher:	IEEE Microwave Theory and Techniques Society
ISSN:	1531-1309
Related URLs:	Publisher
Last Modified:	08 May 2023 01:39
URI:	https://orca.cardiff.ac.uk/id/eprint/18873

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