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Broadband Eight-Way Differential SIW Power Divider with Bandpass-Filtering Response Using Novel Hybrid Multiple-via Probe and Multiple Radial Slots

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Abstract

A broadband eight-way differential substrate integrated waveguide (SIW) power divider with bandpass-filtering response by using novel hybrid multiple-via probe and multiple radial slots has been presented in this paper. The novel hybrid multiple-via probe are employed to achieve broadband impedance matching, while the multiple radial slots are used to improve the out-of-band rejection level. An eight-way differential SIW power divider with bandpass-filtering response is designed, fabricated, and measured. The measured results agree with the simulated ones closely in the desirable frequency range. The measured average insertion loss of the eight-way power divider is approximately 9.3 dB and input return loss is greater than 15 dB from 3.2 to 8.1 GHz. Moreover, the out-of-band rejection band with more than 25 dB attenuation from 9 GHz to more than 11 GHz is observed. A maximum amplitude imbalance of \(\pm 0.7\,\hbox { dB}\) is observed over the entire operating frequency range.

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Acknowledgments

The work for this grant was supported in part by National Natural Science Foundation of China (Grant No: 61271026 and Grant No: 61001030), by the Program for New Century Excellent Talents in University (Grant No: NCET-11-0066), by the Research Fund of ITS (ITS2013002492), by the Research Fund of Shanghai Academy of Spaceflight Technology (SAST201243), by the National Key Laboratory Fund of China under Grant 9140C530404120C53014, and by the project (No: IRT1113) under “Program for Changjiang Scholars and Innovation Team in University”.

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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 , 611731, People’s Republic of China

    Kaijun Song, Fulong Chen, Minghua Zhao & Guoliang Li

  2. National Key Laboratory of Space Microwave Technology, China Academy of Space Technology (CAST), Xi’an , 710000, Shanxi, People’s Republic of China

    Minghua Zhao

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  1. Kaijun Song
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Correspondence to Kaijun Song.

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Song, K., Chen, F., Zhao, M. et al. Broadband Eight-Way Differential SIW Power Divider with Bandpass-Filtering Response Using Novel Hybrid Multiple-via Probe and Multiple Radial Slots. Wireless Pers Commun 78, 1103–1114 (2014). https://doi.org/10.1007/s11277-014-1804-1

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