Association of memory terms in a power amplifier modeling functions to the circuit components

ABSTRACT

The main purpose of this study is to find a relation between power amplifier (PA) circuit component values and delay terms of the PA model polynomial by using measurement results. A PA designer can use this relation to determine component values while designing memoryless/linear PAs. For this purpose, a behavioral model with memory is worked on; the model, modeling approach, experimental set-up and results are presented. Memory depths are determined for a 1–2 GHz 10 W Class AB power amplifier with parametric results. The advantages of the elaborated model are presented. Relations between the bias circuit components and the memory terms are investigated.

KEYWORDS:

• Memory terms
• linearity
• memory effect
• modeling
• power amplifier

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Ahmet Hayrettin Yuzer  http://orcid.org/0000-0003-2436-8179

Additional information

Notes on contributors

Ahmet Hayrettin Yuzer

Ahmet Hayrettin Yuzer received his B.Sc. and M.Sc. degrees in electrical and electronics engineering from Inonu University, Malatya, Turkey, in 1995 and 2002, respectively and his Ph.D. degree in electrical and electronics engineering in 2011 from Middle East Technical University (METU), Ankara, Turkey. He worked as a research assistant from 1999 to 2002 at Inonu University and from 2002 to 2011 at METU. He was at the Intelligent RF Radio Laboratory (iRadio Lab), University of Calgary, Calgary, Canada, as a visiting Ph.D. student from Sept. 2010 to Mar. 2011. Since 2011, he has been an assistant professor with the Department of Electrical and Electronics Engineering at Karabuk University, Karabuk, Turkey. His current scientific research includes amplifier modeling and linearization, and active and passive microwave components. Dr Yuzer has been given an URSI 2008 Student Paper Contest award.

Erhan Dursun

Erhan Dursun received his B.Sc. degree in telecommunication engineering from İstanbul Technical University, İstanbul, Turkey, in 2007 and the M.Sc. degree in electronics engineering from Middle East Technical University, Ankara, Turkey, in 2013. He is currently working as a RF/Microwave Design Expert Engineer at Aselsan Inc., Ankara, Turkey. He has completed military service in 2010. He has worked as a Transmission Engineer at Türk Telekom A.Ş. between Oct. 2007 and Sept. 2008. He has been an intern engineer at Avea A.Ş. between Jul. 2005 and Aug. 2005 and at TRT between Jul. 2006 and Aug. 2006. He is interested in designing active/passive RF components such as couplers, filters, dividers and power amplifiers.