DETERMINATION OF THE GEOMETRIC SIZE OF THE COMMUNICATION HOLE OF TWO CYLINDRICAL WAVEGUIDES
It is always relevant to improve performance in electrodynamic systems. When solving problems on the electrodynamic characteristics of hollow coupled systems, the question is often asked about the relationship between them, about the form of the communication hole with a certain orientation of the guide axes in the system elements and its geometric dimensions. Such a system is a generator (small-sized local oscillator8 mmrange). The inclusion of a high-Q stabilizing resonator in the Gunn diode generator significantly improves its characteristics.
The use of a low-quality coaxial chamber as a diode section increases the generation stability. However, this complicates the numerical calculations of the electrodynamic system of the generator due to the uncertain configuration of the communication hole, since it arises as a result of the intersection of two cylindrical volumes of a coaxial waveguide and a high-quality cylindrical resonator.
In the present work, the task is determination of the shape and size of the intersection figure of two unequal radii of cylindrical volumes with axes orthogonally located in relation to each other at a distance.
The resulting shape of the intersection figure in a planar approximation forms a flat ellipse. The larger diameter of the coupling ellipse depends on the diameter of the resonator, the smaller on the inner diameter of the coaxial chamber, depending on the distance between their axes.
It is necessary to determine the equivalent rectangular hole of the connection. Its presence simplifies the construction of a tangent electric field at the communication hole, which is necessary for numerical calculations of the electrodynamic characteristics of the system.
In this case, with constant diameters of the cylindrical resonators, the geometrical dimensions of the hole depend only on the distance between the axes.
It is with this circumstance that they are dealing with the study of the connection between a cylindrical coaxial diode section and a high-Q stabilizing resonator. Unlike other circuits, where the diode is included in the waveguide section, in this case, its inclusion is made in a coaxial line.
Bronshteyn, I. N., Semendyaev, K. F. (1984). Spravochnik po matematike dlya inzhenerov i uchashchihsya vtuzov. Moscow: Nauka, 720.
Prigent, M., Camiade, M., Nallatamby, J. C., Guittard, J., Obregon, J. (1999). An efficient design method of microwave oscillator circuits for minimum phase noise. IEEE Transactions on Microwave Theory and Techniques, 47 (7), 1122–1125. doi: https://doi.org/10.1109/22.775446
Zeniv, I. O. Krylov, V. M., Monoilyk, V. A. (2013). Dvuhdiodnyy impul'sniy generator 8 mm diapazona. Zviazok, 6.
Zeniv, I. O. (2014). Stabilized millimetric band oscillator with a doubling of output power. Telekomunikatsiyni ta informatsiini tekhnolohiyi, 3, 106–110.
Zheng, B., Zhao, Z., Lv, Y. (2010). A K-band SIW filter with bypass coupling substrate integrated circular cavity (SICC) to improved stopband performance for satellite communication. Progress In Electromagnetics Research C, 17, 95–104. doi: https://doi.org/10.2528/pierc10092403
Kolondzovski, Z., Petkovska, L. (2005). Determination of a synchronous generator characteristics via Finite Element Analysis. Serbian Journal of Electrical Engineering, 2 (2), 157–162. doi: https://doi.org/10.2298/sjee0502157k
Zeniv, I. O., Krylov, V. M. (2016). Small heterodyne of 8-millimetr range using the Gunn diode stabilized by high-Q resonator. Naukovi zapysky Ukrainskoho naukovo-doslidnoho instytutu zviazku, 1, 97–104.
Berhausen, S., Paszek, S. (2015). Use of the finite element method for parameter estimation of the circuit model of a high power synchronous generator. Bulletin of the Polish Academy of Sciences Technical Sciences, 63 (3), 575–582. doi: https://doi.org/10.1515/bpasts-2015-0067
Angiulli, G., Arnieri, E., De Carlo, D., Amendola, G. (2009). Fast Nonlinear Eigenvalues Analysis of Arbitrarily Shaped Substrate Integrated Waveguide (SIW) Resonators. IEEE Transactions on Magnetics, 45 (3), 1412–1415. doi: https://doi.org/10.1109/tmag.2009.2012650
Bondarenko, T. G., Zeniv, I. О., Nizhnyk, R. S. (2017). Research results of solid-state wave gyroscope with metallic resonator. Naukovi zapysky Ukrainskoho naukovo-doslidnoho instytutu zviazku, 1 (45), 49–58.
Copyright (c) 2019 Iryna Zeniv, Yevhenii Batrak, Nataliia Tsopa
This work is licensed under a Creative Commons Attribution 4.0 International License.
Our journal abides by the Creative Commons CC BY copyright rights and permissions for open access journals.
Authors, who are published in this journal, agree to the following conditions:
1. The authors reserve the right to authorship of the work and pass the first publication right of this work to the journal under the terms of a Creative Commons CC BY, which allows others to freely distribute the published research with the obligatory reference to the authors of the original work and the first publication of the work in this journal.
2. The authors have the right to conclude separate supplement agreements that relate to non-exclusive work distribution in the form in which it has been published by the journal (for example, to upload the work to the online storage of the journal or publish it as part of a monograph), provided that the reference to the first publication of the work in this journal is included.