Eight-Way Substrate Integrated Waveguide Power Divider With Low Insertion Loss

We describe a compact radial cavity power divider based on the substrate integrated waveguide (SIW) technology in this paper. The equivalent-circuit model is used to analyze the multiport structure, and a design procedure is also established for the structure. An eight-way C-band SIW power divider w...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 2008-06, Vol.56 (6), p.1473-1477
Hauptverfasser: Kaijun Song, Kaijun Song, Yong Fan, Yong Fan, Yonghong Zhang, Yonghong Zhang
Format: Artikel
Sprache:eng
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Zusammenfassung:We describe a compact radial cavity power divider based on the substrate integrated waveguide (SIW) technology in this paper. The equivalent-circuit model is used to analyze the multiport structure, and a design procedure is also established for the structure. An eight-way C-band SIW power divider with low insertion loss is designed, fabricated, and measured. Good agreement between simulated and measured results is found for the pro posed power divider. The measured minimum insertion loss of the eight-way power divider is approximately 0.2 dB and return loss is approximately 30 dB at 5.25 GHz. The measured 15-dB return-loss bandwidth is found to be approximately 500 MHz, and its 1-dB insertion-loss bandwidth is approximately 1.2 GHz. Furthermore, the isolations between the output ports of the eight-way power divider are also discussed.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2008.923897