paper 150203020044

Abstract

In this paper, a wideband end launch ridge waveguide to coaxial transition is pro- posed, which operates in 8 ∼ 14 GHz. The microwave characteristics of double-ridge waveguide to coaxial transition are analyzed and simulated by full-wave analysis. Quarter wavelength Cheby- shev impedance matching method used to design the middle part of the transition. Dimensions of the first part of transition have been calculated by time domain solver of Ansoft Designer based on finite element method (FEM). The compact LPDA is designed on microstrip to receive signal from the waveguide. This antenna is placed in the E-plane of the ridge waveguide to stimulate the TE10 dominant mode. Higher modes propagation can disturb the performance of the wide band transition. Also in this paper a C shape part is used to increase the cut off frequency of higher modes. The simulation results show that the S11 of the transition is below −10 dB in 8–14 GHz.

1. Das, B. N., K. V. S. V. R. Prasad, and K. V. S. Rao, "Excitation of Waveguide by Stripline- and Microstrip-Line-Fed Slots," IEEE Transactions on Microwave Theory and Techniques, Vol. 34, No. 3, 321–327, March 1986.
doi:10.1109/tmtt.1986.1133338 Google Scholar

2. Grabherr, Wilfried and Wolfgang Menzel, "A New Transition from Microstrip Line to Rectangular Waveguide," 22nd European Microwave Conference, 1992, 1170–1175, October 1992.
doi:10.1109/euma.1992.335862 Google Scholar

3. Lou, Y., C. H. Chan, and Q. Xue, "An in-line waveguide-to-microstrip transition using radialshaped probe," IEEE Microw. Wireless Compon. Lett, Vol. 18, No. 5, 311–313, May 2008.
doi:10.1109/lmwc.2007.892993 Google Scholar

4. Yao, Hui-Wen, A. Abdelmonem, Ji-Fuh Liang, and K. A. Zaki, "Analysis and design of microstrip-to-waveguide transitions," IEEE Transactions on Microwave Theory and Techniques, Vol. 42, No. 12, 2371–2380, 1994.
doi:10.1109/22.339769 Google Scholar

5. Van Heuven, J. H. C., "A new integrated waveguide-microstrip transition," IEEE Trans. Microw. Theory Tech., Vol. 24, 144-147, 1976.
doi:10.1109/tmtt.1976.1128796 Google Scholar

6. Herrero, Pablo and Joerg Schoebel, "A WR-6 rectangular waveguide to microstrip transition and patch antenna at 140 GHz using low-cost solutions," Proc. IEEE Radio and Wireless Symp., 355–358, Orlando, FL, USA, 2008.
doi:10.1109/rws.2008.4463502 Google Scholar

7. Wu, P., Z. Wang, Y. Zhang, S. Sun, and R. Xu, "Wideband waveguide to microstrip probe transition with LTCC technology," Electronics Letters, Vol. 47, No. 1, 43–44, January 2011.
doi:10.1049/el.2010.1956 Google Scholar

8. Lou, Y., C. H. Chan, and Q. Xue, "An in-line waveguide-to-microstriptransition using radialshaped probe," IEEE Microw. Wirel. Compon. Lett., Vol. 18, No. 5, 311–313, 2008.
doi:10.1109/lmwc.2008.922114 Google Scholar

9. Lin, Ting-Huei and Ruey-Beei Wu, "A broadband microstrip-to-waveguidetransition with tapered CPS probe," Proc. 32nd Eur. Microwave Conf., 1–4, Milan, Italy, 2002.
doi:10.1109/euma.2002.339360 Google Scholar

10. Chuang, Jiun-Kai, Ruei-Ying Fang, and Chun-Long Wang, "Compact and broadband microstrip-to-waveguide transition using antisymmetric tapered probes," Electronics Letters, Vol. 48, No. 6, 332–333, March 2012.
doi:10.1049/el.2011.3673 Google Scholar

11. Nie, Rui-XingE. Li, G.-F. Guo, and Y. Wang, "Simulation and design of 18–40 GHz ridge waveguide to coaxial transition," 2011 IEEE International Conference on Microwave Technology & Computational Electromagnetics (ICMTCE), 183–185, May 22–25 2011.
doi:10.1109/icmtce.2011.5915196 Google Scholar

Mohsen Abdolahi

Gholamreza Askari

Maziar Hedayati

Hamid Mirmohammad Sadeghi

Parisa Moslemi