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Progress In Electromagnetics Research C
ISSN: 1937-8718
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COMPACT BRANCH-LINE COUPLER FOR HARMONIC SUPPRESSION

By J.-S. Kim and K.-B. Kong

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Abstract:
This paper presents the modified design that can reject harmonic components in the branch-line coupler. After adding open stubs at the center of branch lines of the traditional design, their new network parameters can be found in order to maintain the conventional function at an operating frequency and suppress its harmonic terms chosen. Experimental results show the second and third harmonic suppressions to be -28.3 and -39.6 dBs, while maintaining its traditional performance at the fundamental frequency.

Citation:
J.-S. Kim and K.-B. Kong, "Compact Branch-Line Coupler for Harmonic Suppression," Progress In Electromagnetics Research C, Vol. 16, 233-239, 2010.
doi:10.2528/PIERC10083011

References:
1. Yi, K. H. and B. Kang, "Modified Wilkinson power divider for nth harmonic suppression," IEEE Microwave and Wireless Components Letters, Vol. 13, No. 5, 178-180, 2003.
doi:10.1109/LMWC.2003.811670

2. Lin, C. M., H. H. Su, J. C. Chiu, and Y. H. Wang, "Wilkinson power divider using microstrip EBG cells for the suppression of harmonics," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 10, 700-702, 2007.
doi:10.1109/LMWC.2007.905595

3. Zhang, F. and C. F. Li, "Power divider with microstrip electromagnetic bandgap element for miniaturization and harmonic rejection," Electron. Lett., Vol. 44, No. 6, 422-423, Mar. 2008.
doi:10.1049/el:20083693

4. Woo, D. J. and T. K. Lee, "Suppression of harmonics in Wilkinson power divider using dual-band rejection by asymmetric DGS," IEEE Trans. Microwave Theory and Tech., Vol. 53, No. 6, 2139-2144, 2005.
doi:10.1109/TMTT.2005.848772

5. Kuo, J. T., J. S. Wu, and Y. C. Chiou, "Miniaturized rat race coupler with suppression of surious passband," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 1, 46-48, Jan. 2007.
doi:10.1109/LMWC.2006.887254

6. Lee, H. S., K. Choi, and H. Y. Hwang, "A harmonic and size reduced ring hybrid using coupled lines," IEEE Microwave and Wireless Components Letters, Vol. 17, No. 4, 259-261, Apr. 2007.
doi:10.1109/LMWC.2007.892954

7. Sung, Y. J., C. S. Ahn, and Y. S. Kim, "Size reduction and harmonic suppression of rat-race hybrid coupler using defected ground structure," IEEE Microwave and Wireless Components Letters, Vol. 14, No. 1, 7-9, 2004.
doi:10.1109/LMWC.2003.821499

8. Sun, K. O., S. J. Ho, C. C. Yen, and D. Weide, "A compact branch-line coupler using discontinuous microstrip lines," IEEE Microwave and Wireless Components Letters, Vol. 15, No. 8, 519-520, 2005.
doi:10.1109/LMWC.2005.852789


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