Poluri, N. orcid.org/0000-0002-3664-8322 and De Souza, M.M. orcid.org/0000-0002-7804-7154 (2023) Ease of matching a load line impedance in a 25 W contiguous mode class BJF−1 broadband amplifier. IEEE Microwave and Wireless Technology Letters, 33 (2). pp. 181-184. ISSN 2771-957X
Abstract
We investigate contiguous modes called “the series of continuum modes” (SCM) and class BJF−1 that offer a resistive component of the load line impedance that is 1.17 times and 1.7 times that of class B, respectively. Both these modes result in a similar performance of efficiency, output power, and gain, but class BJF−1 has a wider design space and is easier to match. An increase in the resistive component of the fundamental impedance of class BJF−1 increases efficiency with minimal impact on the bandwidth for an inductive load. An amplifier designed in class BJF−1 using the CGH40025F demonstrates an average efficiency of 70.8% and output power greater than 28 W over a bandwidth from 2.2 to 3.3 GHz, resulting in a comparable frequency weighted efficiency (FE) of 91% with respect to other reported amplifiers with similar fractional bandwidth (FBW) and output power while operating at the highest reported frequency (3.3 GHz) using this device.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. Reproduced in accordance with the publisher's self-archiving policy. |
Keywords: | Broadband; power amplifiers; simplified real frequency technique (SRFT) |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Electronic and Electrical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 14 Feb 2024 10:32 |
Last Modified: | 14 Feb 2024 16:25 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/lmwc.2022.3209573 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:209170 |