Eigenmodes of sectoral coaxial ridged waveguides





sectoral coaxial ridged waveguide, TE mode, ТМ mode, cutoff wave number, field distribution, single-mode operation, operation frequency band


The results of numerical investigation of sectoral coaxial ridged waveguides eigenmodes of two configurations (with a ridge on inner or outer wall) for different cross–section dimensions are presented. In particular, dependences of cutoff wave numbers on geometrical dimensions ratios for first four modes are investigated, electric field components distributions for these modes have been obtained and the optimization of sectoral coaxial ridged waveguides has been carried out to provide maximal single–mode operation frequency band. Two optimal configurations of waveguides with single–mode operation bandwidth ratio 5.6:1 are obtained. It is shown that smaller cross–section dimensions at the fixed single–mode operation frequency band has the waveguide with the ridge at the inner round wall. The size of the gap between the ridge and the round wall of optimal waveguide is identical for both configurations and is determined by the required ratio of cutoff frequencies of two lower TE modes. Calculations are conducted utilizing the mathematical model obtained in [1] by the integral equation technique with the correct account of singular behavior of the field at the ridge.


F. F. Dubrovka and S. I. Piltyay, “Electrodynamics boundary problem solution for sectoral coaxial ridged waveguides by integral equation technique,” Izv. Vyssh. Uchebn. Zaved., Radioelektron. 55(5), 3 (2012) [Radioelectron. Commun. Syst. 55(5), 191 (2012)].

N. Suntheralingam, N. Mohottige, and D. Budimir, “Electromagnetic modelling of ridged waveguide resonator loaded bandpass filters,” in Proc. of IEEE Antennas and Propagation Society Int. Symp. APSURSI 2010, Toronto, Canada (Toronto, 2010), pp. 1–4.

S. Li, J. Fu, and X. Wu, “Double ridged waveguide low pass filters for satellite application,” in Proc. of Int. Symp. on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007, Hangzhou, China (Hangzhou, 2007), pp. 408–410.

M. B. Manuilov, K. V. Kobrin, and L. A. Obrezanova, “Ridged waveguide filters with improved performance,” in Proc. of 16th Int. Crimean Conf. on Microwave and Telecommunication Technology, CriMiCo, 2006, Sevastopol, Ukraine (Sevastopol, 2006), pp. 507–508.

D. Dai, Z. Wang, N. Julian, and J. E. Bowers, “Compact broadband polarizer based on shallowly-etched silicon-on-insulator ridge optical waveguides,” in Proc. of Optical Fiber Communication and National Fiber Optic Engineers Conf., OFC/NFOEC, 2011, Los Angeles, USA (Los Angeles, 2011), pp. 1–3.

A. Tribak, A. Mediavilla, J. L. Cano, M. Boussouis, and K. Cepero, “Ultra-broadband low axial ratio corrugated quad-ridge polarizer,” in Proc. of European Microwave Conf., EuMC, 2009, Rome, Italy (Rome, 2009), pp. 73–76.

J. D. Bull, H. Kato, and N. Jaeger, “Asymmetrically strained ridge waveguide for passive polarization conversion,” IEEE Photonics Technol. Lett. 20, No. 24, 2186 (Dec. 2008).

A. Polemi, S. Maci, and P.-S. Kildal, “Dispersion characteristics of a metamaterial-based parallel-plate ridge gap waveguide realized by bed of nails,” IEEE Trans. Antennas Propag. 59, No. 3, 904 (March 2011).

M. A. Ruiz-Bernal, M. Valverde-Navarro, G. Goussetis, J.-L. Gomez-Tornero, A. P. Feresidis, “Higher order modes of the ridged coaxial waveguide,” in Proc. of 36th European Microwave Conf., 2006, Manchester, UK (Manchester, 2006), pp. 1221–1224.

Y. Tang, J. Zhao, W. Wu, “Analysis of quadruple-ridged square waveguide by multilayer perceptron neural network model,” in Proc. of Asia-Pacific Microwave Conf., APMC 2006, Yokohama, Japan (Yokohama, 2006), pp. 1912–1918.

J. Xu, W. Wang, Y. Gong, and Y. Wei, “Analysis of elliptical ridged waveguide,” in Proc. of joint 31st Int. Conf. on Infrared Millimeter Waves and 14th Int. Conf. on Teraherz Electronics, IRMMW-THz 2006, Shanghai, China (Shanghai, 2006), p. 265.

O. B. Jacobs, J. W. Odendaal, and J. Joubert, “Elliptically shaped quad-ridge horn antennas as feed for a reflector,” IEEE Antennas Wireless Propag. Lett. 10, 756 (2011).

A. Akgiray, S. Weinreb, and W. Imbriale, “Design and measurements of dual-polarized wideband constant-beamwidth quadruple-ridged flared horn,” in Proc. of IEEE Int. Symp. on Antennas and Propagation, APSURSI 2011, Spokane, USA (Spokane, 2011), pp. 1135–1138.

O. B. Jacobs, J. W. Odendaal, and J. Joubert, “Quad ridge horn antenna with elliptically shaped sidewalls,” in Proc. of Int. Conf. on Electromagnetics in Advanced Applications, ICEAA 2011, Torino, Italy (Torino, 2011), pp. 259–262.

G. M. Coutts, “Wideband diagonal quadruple-ridge orthomode transducer for circular polarization detection,” IEEE Trans. Antennas Propag. 59, No. 6, 1902 (June 2011).

J.-H. Hwang and Y. Oh, “Compact orthomode transducer using single-ridged triangular waveguides,” IEEE Microwave Wireless Comp. Lett. 21, No. 8, 412 (2011).

H. Z. Zhang, “A wideband orthogonal-mode junction using ridged sectoral waveguides,” Dig. Int. Symp. IEEE Antennas and Propag. 40, 432 (June 2002).

C. I. Yeo, S. J. Jang, J. S. Yu, Y. T. Lee, “1.3-mlaterally tapered ridge waveguide DFB lasers with second-order Cr surface gratings,” IEEE Photonics Technol. Lett. 22, No. 22, 1668 (Nov. 2010).

R. K. Price, V. B. Verma, V. C. Elarde, and J. J. Coleman, “Internal loss, modal characteristics, and bend loss of asymmetric cladding ridge waveguide lasers at 850 nm,” J. Appl. Phys. 103, No. 1, 013108 (Jan. 2008).

J. H. Teng, E. L. Lim, S. J. Chua, et al. “Self-aligned metal-contact and passivation technique for submicron ridge waveguide laser fabrication,” J. Vacuum Sci. Technol. B: Microelectron. Nanometer Structures 26, No. 5, 1748 (Sep. 2008).

A. L. Amadjikpe and J. Papapolymerou, “A high-Q electronically tunable evanescent-mode double-ridged rectangular waveguide resonator,” IEEE MTT-S Int. Microwave Symp. Dig. 1019 (June 2008).

A. E. Serebryannikov, O. E. Vasylchenko, and K. Schunemann, “Fast coupled-integral-equations-based analysis of azimuthally corrugated cavities,” IEEE Microwave Wireless Compon. Lett. 14, No. 5, 240 (May 2004).

D. A. Jarvis and T. C. Rao, “Design of double-ridged rectangular waveguide of arbitrary aspect ratio and ridge height,” IEE Proc. H: Microwaves, Antennas Propag. 147, No. 1, 31 (Feb. 2000).

Y. Rong and K. A. Zaki, “Characteristics of generalized rectangular and circular ridge waveguides,” IEEE Trans. Microwave Theory Tech. 48, No. 2, 258 (Feb. 2000).

C. Wang and K. A. Zaki, “Full-wave modeling of generalized double ridge waveguide T-junctions,” IEEE Trans.Microwave Theory Tech. 44, No. 12, 2536 (Dec. 1996).





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