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Investigating Concurrent-Mode Operation of Dual-Band Class-J/J Power Amplifiers: Analysis and Design Technique

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Abstract

In this paper, concurrent-mode operation of dual-band PAs under simultaneous drive of two stimuli is investigated. It is shown that Class-J operation is well suited for this mode of operation as its concurrent-mode efficiency is less affected by the load reactance tuning accuracy at inter-modulation frequencies. This characteristic results in preserved efficiencies over wider bandwidths, and simplicity of intermodulation tuning network (IMTN) realization. It has been also shown that dual-band Class-J/J PA fully takes advantage of the transistor’s nonlinear output capacitance in case of simultaneously driven input by boosting the efficiency. A Class-J/J concurrent dual-band PA with IMTN is designed and implemented which operates over 1.842/2.655 GHz bands. About 40 dBm output power and efficiencies more than 70% at lower band and upper band are obtained according to the experimental results while the concurrent-mode efficiency is about 61.2%.

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Data Availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Code Availability

The codes generated during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

This work was supported in part by Iran National Science Foundation (INSF).

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Authors and Affiliations

  1. Department of Electrical Engineering, Amirkabir University of Technology, Tehran, Iran

    Milad Shariatifar & Abdolali Abdipour

  2. Department of Electrical Engineering, Shahed University, Tehran, Iran

    Mohsen Jalali

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  1. Milad Shariatifar
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  2. Mohsen Jalali
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  3. Abdolali Abdipour
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The authors contribute to the work according to the order of their names.

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Correspondence to Mohsen Jalali.

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Shariatifar, M., Jalali, M. & Abdipour, A. Investigating Concurrent-Mode Operation of Dual-Band Class-J/J Power Amplifiers: Analysis and Design Technique. Wireless Pers Commun 126, 1431–1442 (2022). https://doi.org/10.1007/s11277-022-09798-5

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  • DOI: https://doi.org/10.1007/s11277-022-09798-5

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