An experimental research of the ultra-wideband pulse propagation in a transdirectional coupler based on coupled striplines

Volume 6, Issue 4, August 2021     |     PP. 93-103      |     PDF (344 K)    |     Pub. Date: November 1, 2021
DOI: 10.54647/dee47117    96 Downloads     14503 Views  

Author(s)

Nickolay Malyutin, Tomsk State University of Control System and Radioelectronics, Tomsk, Russian Federation
Evgeniy Trenkal, Tomsk State University of Control System and Radioelectronics, Tomsk, Russian Federation
Aleksandr Sychev, Tomsk State University of Control System and Radioelectronics, Tomsk, Russian Federation

Abstract
The propagation of short picosecond pulses in coupled strip lines with a phase velocity ratio of odd and even modes of 3:1 is considered. The feature of the separation of the input pulse between the three output ports without significant loss of energy due to reflection from the input in transdirectional couplers based on coupled strip lines is experimentally shown. As a result of the analysis, it was found that the spectral components of the pulse are separating between the ports of the transdirectional coupler.

Keywords
striplines, unbalanced coupling, transdirectional coupler, pulsed action, pulse propagation, spectral characteristics.

Cite this paper
Nickolay Malyutin, Evgeniy Trenkal, Aleksandr Sychev, An experimental research of the ultra-wideband pulse propagation in a transdirectional coupler based on coupled striplines , SCIREA Journal of Electrical Engineering. Volume 6, Issue 4, August 2021 | PP. 93-103. 10.54647/dee47117

References

[ 1 ] Vlostovskiy E. Theory of coupled transmission lines: Telecommun. and Radio Engrg., 1967, 21, pp. 87–93.
[ 2 ] Zysman, G.I., Johnson, A.K. Coupled Transmission Line Networks in an Inhomogeneous Dielectric Medium. IEEE Transactions on Microwave Theory and Techniques, 1969. Vol. 17. No 10, p. 753-759. DOI: 10.1109/TMTT.1969.1127055.
[ 3 ] Allen, J.L. Non-symmetrical coupled lines in an inhomogeneous dielectric medium. International Journal of Electronics. 1975. Vol. 38. No 3. P. 337-347. DOI: 10.1080/00207217508920406.
[ 4 ] Tripathi VK. Asymmetric coupled transmission lines in an inhomogeneous medium. IEEE Trans. Microwave Theory Tech. 1975, 23(9), p. 734–739. DOI: 10.1109/TMTT.1975.1128665.
[ 5 ] Malyutin, N.D. Matrix parameters of non-identical, coupled striplines with a non-homogeneous dielectric. Radio Eng. Electron Phys Vol. 21, Issue 12, Dec., Pp. 14-19.
[ 6 ] Vorob'ev P., Malyutin N., et al. Quasi-T-waves in devices using coupled strip lines with unbalanced electromagnetic coupling. Radio Engineering and Electronic Physics (English translation of Radiotekhnika i Elektronika). 1982. 27 (9). P. 38-44.
[ 7 ] Cristal E. G. Coupled-transmission-line directional couplers with coupled lines of unequal characteristic impedances. IEEE Microwave Theory and Technique, vol. MTT-14, no. 7, pp. 337–346, Jul. 1966. DOI: 10.1109/TMTT.1966.1126266.
[ 8 ] Cohn S. B. and Levy R. History of microwave passive components with particular attention to directional couplers. IEEE Trans. Microwave Theory and Technique, vol. MTT-32, no. 9, pp. 1046–1054, Sep. 1984. DOI: 10.1109/TMTT.1984.1132816.
[ 9 ] Matthaei G, Young L, Jones EM T. Microwave filters, impedance matching networks and coupling structures. Norwood (MA): Artech House; 1985. DOI: 10.1109/PROC.1965.4048.
[ 10 ] Sychev A.N., Struchkov S.M., Rudyi N.Y. Synthesis of an ideal phase ratio for a coupled-line coupler with given type of directivity, Proc. TUSUR, 2017, vol. 20, no. 2, pp. 15–18. (In Russ.).
[ 11 ] Pat. 2585884 RU Transdirectional coupled line coupler with vertical plate / A.N.Sychev, S.M.Struchkov, et al. TUSUR, Appl. № 2015108565/28, Filed: 11.03.2015, Publ.: 10.06.2016, Bul. № 16.
[ 12 ] Sychev A.N., Struchkov S.M., et al. A novel transdirectional coupler based on vertically installed planar circuit. Proc. of the 45-th Eur. Microw. Conf., Sept. 2015, Paris, France, pp. 283–286. DOI: 10.1109/EuMC.2015.7345755.
[ 13 ] Sychev A.N., Struchkov S.M., Rudyi N.Y. A transdirectional coupled-line coupler with a vertical insert. Proc. 25th Int. Crimean Conf. “Microwave & Telecommunication Technology” (CriMiCo’2015), Sept. 2015, Sevastopol, Russia, pp. 547–549.
[ 14 ] Sychev A.N., Struchkov S.M., Rudyi N.Y. Three-section transdirectional coupler of X-band. Proc. of the TUSUR, 2015, no. 4 (36). – pp. 12–16 (in Russ.)
[ 15 ] Sychev A.N., Struchkov S.M., Rudyi N.Y., Salnikov A.S. Modeling of the vertically installed planar coupled lines by the numerical conformal transformation technique. IEEE MTT-S Int. Conf. on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), May 2017, Sevilla, Spain.– P.124–126. DOI: 10.1109/NEMO.2017.7964202.
[ 16 ] Belousov, A.O., Gazizov T.R. Simulation of the time response in multiconductor microstrip modal filters with separate accounting for losses in conductors and dielectrics. Moscow Workshop on Electronic and Networking Technologies, MWENT 2018 - ProceedingsVolume 2018-March, 12 April 2018, Pp. 1-5. DOI: 10.1109/MWENT.2018.8337216.