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A miniaturized harmonic suppressed power amplifier integrated with lowpass filter for long term evolution application

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Abstract

A compact power amplifier matched by a proposed lowpass filter (LPF) with nth harmonics suppression is presented in this paper. In the proposed PA, the LPF is applied as an output transformer network, which transforms 50 Ω to the desired impedance to have maximum power. In this method the conventional output matching network is eliminated, which results in the 26 % size reduction of the proposed PA as compared with the conventional one. Moreover, using the LPF at the output impressively suppresses the harmonics (2nd–5th) with high levels of attenuation. The proposed PA is designed at the 2.6 GHz, which is suitable for LTE applications. The simulated and measured results are in the good agreement, which confirm the validity of the proposed design.

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Acknowledgment

The authors would like to thank the Kermanshah Branch, Islamic Azad University for the financial support of this research project.

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Authors and Affiliations

  1. Department of Electrical Engineering, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran

    Saeed Roshani, Mohsen Hayati, Sobhan Roshani & Golshan Mohamadpour

  2. Department of Electrical Engineering, Razi University, Kermanshah, Iran

    Mohsen Hayati & Golshan Mohamadpour

  3. Department of Medical Radiation Engineering, Faculty of Energy Eng and Physics, Amirkabir University of Technology, Tehran, Iran

    Saeed Setayeshi

Authors
  1. Saeed Roshani
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  2. Mohsen Hayati
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  3. Saeed Setayeshi
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  4. Sobhan Roshani
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  5. Golshan Mohamadpour
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Correspondence to Saeed Roshani.

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Roshani, S., Hayati, M., Setayeshi, S. et al. A miniaturized harmonic suppressed power amplifier integrated with lowpass filter for long term evolution application. Analog Integr Circ Sig Process 89, 197–204 (2016). https://doi.org/10.1007/s10470-016-0816-z

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  • DOI: https://doi.org/10.1007/s10470-016-0816-z

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