Compact 90° twists into rectangular waveguides
DOI:
https://doi.org/10.3103/S0735272710030064Keywords:
orthogonal twist, square waveguideAbstract
There are considered two types of orthogonal twists, whose transforming units are formed into square waveguides with two square or step ridges. Electrodynamic models of twists are developed using methods of partial regions and generalized scattering matrixes. There are represented twists optimization results, providing high matching level at all operating frequency band of standard waveguide, whose relation of narrow and wide dimensions is b/a = 0.5. It is demonstrated good accordance of calculated and measured characteristics for real constructed models of two twisting types for waveguide 23×10 mm2. It is shown that lengths of proposed twisting are ten times lesser than traditional smooth ones in case of closed or even better characteristics.
References
A. F. Harwey, Microwave Engineering, Vol. 1 (Academic Press, London, New York, 1963; Sov. Radio, Moscow, 1965).
H. A. Wheeler and H. Schwiebert, “Step–Twist Waveguide Components,” IRE Trans. Microwave Theory Tech. 3, No. 5, 44 (1955).
P. I. Alonso–Juaristi, J. Esteban, and J. M. Rebollar, “Design of Compact Waveguide Twists,” IEEE Trans. Microwave Theory Tech. 45, No. 5, 636 (1997).
M. Baralis, R. Tascone, A. Olivieri, et al., “Full–Wave Design of Broad–Band Compact Waveguide Step–Twists,” IEEE Microwave Wireless Compon. Lett. 15, No. 2, 134 (2005).
V. G. Salis, S. A. Mallios, I. G. Tigelis, and A. S. Theodorou, “Optimized 90° Polarization Shift Step Twists for Ku, K and Ka Bands,” IJIM 28, No. 4, 291 (2007).
H. Asao, G. Hiraiwa, and A. Katayama, “A Compact 90-Degree Twist Using Novel Ridged Waveguide for Integrated Waveguide Subsystems,” in Proc. of 36th Europ. Microw. Conf., Manchester, UK, Sept. 2006 (Manchester, 2006), pp. 1185–1188.
A. A. Kirilenko, D. Yu. Kulik, and L. A. Rud, “Compact 90° twist Formed by a Double–Corner–Cut Square Waveguide Section,” IEEE Trans. Microwave Theory Tech. 56, No. 7, 1633 (2008).
L. Rud, D. Kulik, and A. Kirilenko, “Compact Broadband 90-Degree Twist Based on Square Waveguide Section with Two Stepped Corner Ridges,” Microw. Opt. Technol. Lett. 51, No. 3, 851 (2009).
A. Kirilenko, D. Kulik, Yu. Parkhomenko, et al., “Automatic Electromagnetic Solver Based on Mode–Matching, Transverse Resonance, and S-Matrix Technique,” in Proc. of 14th Int. Conf. Microw., Radar, Wireless Commun., Gdansk, Poland, May 2002 (Gdansk, 2002), pp. 815–824.
