Vol. 45

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2013-10-21

The Squarax Spatial Power Combiner

By Alberto Leggieri, Giancarlo Orengo, Davide Passi, and Franco Di Paolo
Progress In Electromagnetics Research C, Vol. 45, 43-55, 2013
doi:10.2528/PIERC13090404

Abstract

A broad-band transmission line spatial power combiner (SPC) is proposed in this paper, which uses a square coaxial (Squarax) transmission line (TL). This structure has some advantages over the traditional circular coaxial spatial power combiner, which have been described in this paper. Fin-Line to microstrip transitions are inserted into the Squarax TL, in order to allow an easy integration of Monolithic Microwave Integrated Circuit (MMIC) Solid State Power Amplifier (SSPA). The Squarax SPC geometry allows the feeding of a higher number of MMIC than in a Waveguide SPC, so that this structure ensures high power outputs and small sizes, together with theoretical DC frequency cut-off. In this work, the design and simulation of a passive 4-18 GHz Squarax SPC are reported.

Citation


Alberto Leggieri, Giancarlo Orengo, Davide Passi, and Franco Di Paolo, "The Squarax Spatial Power Combiner," Progress In Electromagnetics Research C, Vol. 45, 43-55, 2013.
doi:10.2528/PIERC13090404
http://jpier.org/PIERC/pier.php?paper=13090404

References


    1. Than, H. T., G. W. Sun, G. S. Cuellar, J. Y. Zeng, N. T. Schultz, M. E. Moya, Y. Chung, B. C. Deckman, and M. P. DeLisio, "Design and performance of a 600-W-band amplifier using spatially combined GaAs FETs for satellite communications," IEEE Journal of Solid-State Circuits, Vol. 47, No. 10, 2012.
    doi:10.1109/JSSC.2012.2204928

    2. Russel, K. J., "Microwave power combining techniques," IEEE Transactions on Microwave Theory and Techniques, Vol. 27, No. 5, 472-478, 1979.
    doi:10.1109/TMTT.1979.1129651

    3. Chang, K. and C. Sun, "Millimeter-wave power combining techniques," IEEE Transactions on Microwave Theory and Techniques, Vol. 31, No. 2, 91-107, 1983.
    doi:10.1109/TMTT.1983.1131443

    4. Courtney, P. G., T. Tran, C. Bartak, S. Behan, and P. Jia, "High e±ciency 80W X-band power amplifier using coaxial waveguide spatial power combining technique," International Microwave Symposium Digest, 1396-1399, 2010.

    5. Russo, I., L. Boccia, G. Amendola, and G. Di Massa, "Parametric analysis of grid amplifiers," Proceedings of European Microwave Week 2008, 1326-1326, 2008.