ITM Web Conf.
Volume 30, 201929th International Crimean Conference “Microwave & Telecommunication Technology” (CriMiCo’2019)
|Number of page(s)||7|
|Section||Vacuum and Microvacuum Microwave Devices (2)|
|Published online||27 November 2019|
The dynamics of merge and inversion of cavity and slot modes in coupled cavity chain slow wave structure
1 Saratov State University, Saratov, 410012, Russian Federation
2 JSC “RPC “Istok” named after Shokin”, Fryazino, 141190, Russian Federation
* Corresponding author: email@example.com
The results of a theoretical study of the electrodynamic characteristics (EDC) in the dynamics of merge of the cavity and slot passbands of a slow-wave structure (SS) such as a coupled cavity chain (CCC) with the subsequent transition to a CCC with an inverted slot mode with a change in the opening angle of the coupling slot are presented. An analysis of the characteristics of CCC with combined and inverted bands with a traditional SS is carried out. The coupling impedance is presented for the first three spatial harmonics. The EDC CCC calculation was performed in the ANSYS HFSS program using the method of separation of closely spaced modes proposed by the authors. Suggested method made it possible to significantly increase the accuracy of the calculation of the dispersion characteristics of the CCC in the process of combining the passbands with the determination of the boundaries of not only the cavity, but also the slot passbands until the disappearance of the non-transmission band. The analysis of the distribution of the fields at given phase shifts in the cavity and slot CCC passbands revealed the features of their change during the inversion of the bands compared to traditional concepts. The field distributions in both passbands at different phase shifts have a hybrid (mixed) character of the fields of both the cavity and slot types waves.
© The Authors, published by EDP Sciences, 2019
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