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Millileter-Wave Power-Combining Amplifier Using A Broadband Waveguide Combiner

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Abstract

A Millimeter-wave power-combining amplifier based on the multi-way rectangular-waveguide power-dividing/combining circuit has been presented and investigated. The equivalent-circuit approach has been used to analyze the passive power-dividing/combining circuits. An eight-device amplifier is designed and measured to validate the power-dividing/combining mechanism using this technique. Both the measured 10-dB return loss bandwidth and the 2-dB insertion loss bandwidth of the passive system are more than 10 GHz. The measured maximum small-signal gain of the millimeter-wave eight-device power amplifier is 22.5 dB at 26.8 GHz with a 3-dB bandwidth of more than 6 GHz, while the input and output return loss of the proposed eight-device power amplifier is around −10 dB from 26 GHz to 36 GHz. The measured maximum output power at 1-dB compression from the power amplifier is 28 dBm at 29.5 GHz.

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Acknowledgments

The work for this grant was supported in part by National Natural Science Foundation of China (Grant No: 61271026), by National Natural Science Foundation of China-NASF (Grant No: 10976005), by the Program for New Century Excellent Talents in University (Grant No: NCET-11-0066), and by the Research Fund of Shanghai Academy of Spaceflight Technology (SAST201243).

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Authors and Affiliations

  1. EHF Key Laboratory of Fundamental Science, School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 611731, People’s Republic of China

    Kaijun Song, Shunyong Hu, Yuxia Mo & Yong Fan

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  1. Kaijun Song
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  2. Shunyong Hu
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  3. Yuxia Mo
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  4. Yong Fan
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Correspondence to Kaijun Song.

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Song, K., Hu, S., Mo, Y. et al. Millileter-Wave Power-Combining Amplifier Using A Broadband Waveguide Combiner. J Infrared Milli Terahz Waves 33, 1211–1220 (2012). https://doi.org/10.1007/s10762-012-9944-4

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  • DOI: https://doi.org/10.1007/s10762-012-9944-4

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