A design of composite negative group delay circuit with lower signal attenuation for performance improvement of power amplifier linearization techniques

Choi, Heungjae ORCID: https://orcid.org/0000-0003-1108-293X, Chaudhary, Girdhari, Moon, Taesu, Jeong, Yongchae, Lim, Jongsik and Kim, Chul Dong 2011. A design of composite negative group delay circuit with lower signal attenuation for performance improvement of power amplifier linearization techniques. Presented at: 2011 IEEE/MTT-S International Microwave Symposium, Baltimore, MD, USA, 5-10 June 2011. 2011 IEEE MTT-S International Microwave Symposium Digest (MTT). Picastaway, NJ: IEEE, pp. 1-4. 10.1109/MWSYM.2011.5972599

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Abstract

In this paper, we propose a novel composite negative group delay circuit to reduce the signal attenuation required to obtain negative group delay. It is already known that negative group delay can be obtained in a specific frequency of signal attenuation. For the same negative group delay of -6 ns, the signal attenuation of the conventional circuit is 31.25 dB, while the proposed composite circuit involves signal attenuation of only 13.9 dB. As a result, the number of gain compensating amplifiers can be reduced. This contributes to the efficiency enhancement as well as out-of-band noise reduction and stable operation when integrated into the power amplifier linearization system.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Publisher:	IEEE
ISBN:	9781612847542
Last Modified:	27 Oct 2022 10:08
URI:	https://orca.cardiff.ac.uk/id/eprint/69006

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