A frequency agile, power adaptive broadband power amplifier has applications in many fields including high speed mobile data services, defense, jamming devices etc. Also, the RF front end is a major bottle neck in the realization of Software Defined Radio (SDR). This project focuses on the power amplifier design of a reconfigurable frontend required for SDR. The designed amplifier will be useful for Wi-Fi and WiMAX transceivers as well as S-band communication standards. At present, multiband radio transceivers have separate power amplifiers for each band. A single amplifier for multiband operation means smaller size, less power consumption, reduced bill of material and, thus, will be attractive for both civil and military applications in the domestic and international high-tech industries such as Ericsson, Infineon and Huawei.

Members     Project Investigator: Dr. Qamar-ul-Wahab (quw@neduet.edu.pk) Co-Project Investigator: Hashim Raza Khan (hashim@neduet.edu.pk) Research Assistants: Abdul Raheem Qureshi (araheemqureshi@neduet.edu.pk) Hafiza Mazia Ada (hafizamazia@neduet.edu.pk) Students   Project Progress   Publications: 2014 Fully integrated Current Mode Class-D (CMCD) power amplifier with improved PAE, F.Zafar , A.R Qureshi , H.R Khan , Q. Wahab , 12th IEEE International NEWCAS Conference June 22- 25, 2014, Trois-Rivieres, Canada. Analysis and Modeling of Cost Effective Novel Structure of a Transmission Line for RFIC Designs, A.R Qureshi , H.R Khan , Q. Wahab , IEEE International Conference on Microwave Magnetics 2014, 29th June-2nd July, Sendai, Japan. PWM with differential Class-E amplifier for efficiency enhancement at back-off power levels, A.R Qureshi , H.R Khan , Q. Wahab , IEEE 57th International Midwest Symposium on Circuit and Systems, Texas, USA, August 3-6, 2014. (Accepted). 2013 Eliminating Tie-down Diodes in Process Technologies, F.Zafar , A.R Qureshi , H.R Khan , Q. Wahab , 16th International Multi-topic Conference (INMIC) 2013, Pakistan, December 2013, Pages.110-114, doi 10.1109/INMIC.2013.6731334. A Fully Integrated Distributed Active Transformer Based Power Amplifier in 0.13µm CMOS Technology, H.R. Khan, U. Sajid, S. Kanwal, F. Zafar & Q. Wahab, 2nd IEEE Saudi International Electronics, Communications and Photonics Conference, 27-30 April 2013, ISBN 978-1-4673-6196-5, doi 10.1109/SIECPC.2013.6550995, Pages 1-6. 2012 Design & EM Simulation of On-chip Transformer Baluns for RF Power Amplifiers, H. R. Khan, F.Zafar ,A. R. Qureshi, and Q. Wahab , 2012 Asia-Pacific Electromagnetic Compatibility Symposium and Technical Exhibition, Singapore, May 21-24, ISBN 978-1-4577-1557-0, doi 10.1109/APEMC.2012.6237898, Pages 881-884, 2012. Sonnet EM Simulation of High Power Transformers for RF Power Amplifiers, H. R. Khan, F.Zafar ,A. R. Qureshi, and Q. Wahab , 28th International Review of Progress in Applied Computational Electromagnetics, Columbus, OH, USA, April 2012 , APEMC 2012 - Proceedings, Pages 881-884. doi 10.1109/APEMC.2012.6237898. High Efficiency Switching Classes RF Power Amplifiers in Wireless Communication, A. R. Qureshi, H. R. Khan and Q. Wahab , NED University Journal of Research, Volume : Thematic Issue on Energy, Pages 81-90, January 2012.