1. Skolnik, , M. I. (ed.), , Radar Handbook, , NewYork, 1970.
2. Pozar, , D. M., , "Microwave Engineering, ," Wiley, , 1998..
3. Wang, H., , D. G. Fang, and X. G. Chen, "A compact single layer monopulse microstrip antenna array," IEEE Trans. Microw. Theory Tech.,, Vol. 54, No. 2, , 503-509, , 2006..
4. Chiu, , L. , Q. Xue, and , "Investigation of a wideband 90 hybrid coupler with an arbitrary coupling level," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 4, , 1022-1029, 2010..
doi:10.1109/TMTT.2010.2042835
5. U-Yen, , K., , E. J. Wollack, J. Papapolymerou, and J. Laskar, "A broadband planar magic-T using microstripslotline transitions," IEEE Trans. Microw. Theory Tech., Vol. 56, No. 1, 172-177, 2008.
doi:10.1109/TMTT.2007.912213
6. Kim, , J. P. , W. S. Park, and , "Novel configurations of planar multilayer magic-T using microstrip{slotline transitions," IEEE Trans. Microw. Theory Tech., Vol. 50, No. 7, , 1683-1688, 2002.
doi:10.1109/TMTT.2002.800387
7. Wilkinson, , E. J., , "An N-way hybrid power divider," IRE Trans. Microwave Theory Tech.,, Vol. 8, , 116-118, , 1960.
doi:10.1109/TMTT.1960.1124668
8. Nystrom, , G. L., , "Synthesis of broad-band 3-dB hybrids based on the 2-way power divider," IEEE Trans. Microw. Theory Tech., Vol. 29, No. 3, 189-194, , 1981.
doi:10.1109/TMTT.1981.1130326
9. Yang, , N., , C. Caloz, and K. Wu, , "Broadband compact 180 hybrid derived from the Wilkinson divider," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 4, 1030-1037, , 2010.
doi:10.1109/TMTT.2010.2042631
10. Gysel, , U. H., , "A new N-way power divider/combiner suitable forhigh-power application," IEEE MTT-S Int. Microw. Symp. Dig., Vol. 75, 116-118, , 1975.
11. Knochel, R. , B. Mayer, and , "Broadband printed circuit 0/180 couplers and high power inphase power dividers," IEEE MTT-S International Microwave Symposium Digest, , Vol. 1, , 471-474, 1990.
12. Wu, , Y., , Y. Liu, and S. Li, , "A modified Gysel power divider of arbitrary power ratio and real terminated impedances," IEEE Microwave and Wireless Components Letters,, Vol. 21, No. 11, 601, 2011..
doi:10.1109/LMWC.2011.2168603
13. Sun, , Z., L. Zhang, Y. Liu, and X. Tong, , "Modified Gysel power divider for dual-band applications," IEEE Microwave and Wireless Components Letters, , Vol. 21, No. 1, , 2011..
doi:10.1109/LMWC.2011.2168603
14. Tirado-Mendez, , J. A., H. Jardon-Aguilar, and , "Comparison of defected ground structure (DGS) and defected microstrip structure (DMS) behavior at high frequencies," 2004 Proceeding of 1st International Conference on Electrical and Electronics Engineering, 7--10, , 2004.