volume | PIER Journals

Abstract

A novel 180° hybrid is proposed, based on a modified Gysel power combiner, using phase shifter and ground bridge for the difference output. Also the Defected Microstrip Structure has been used to increase the hybrid's phase matching. All steps of the design are simulated using HFSS 11 and the final design is validated by the fabrication. It has good results between 7 GHz to 10 GHz and can be used between 6 GHz to 11 GHz with less accuracy.

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, , Feb. 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, Apr. 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, Jan. 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, Jul. 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, , Jan. 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, , Mar. 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, , Apr. 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, , May 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, Nov. 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, , Jan. 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, , Sep. 2004.

Dr. Mahdi Fartookzadeh

Dr. Seyed Hosein Mohseni Armaki

Dr. Morteza Kazerooni