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1 Bulletin of the Polish Academy of Sciences. Technical Sciences

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TEm,1 coaxial modes generator for cold-testing of high power components and devices

Jaworski Grzegorz, Francik Andrzej, Nowak Kacper

Bulletin of the Polish Academy of Sciences. Technical Sciences

2022

Vol. 70, nr 2

art. no. e140467

In this paper, we describe the development and design procedure of the new kind of coaxial TEm,1 modes generator based on ring resonator with coupling apertures. The generator enables excitation of subsequent TEm,1 modes in a cylindrical waveguide. The proposed design method allows to obtain high purity TEm,1 modes. The angular mode number can be chosen by replacing the plate with coupling apertures. Structure and parameters of the generator was optimized using CST-Microwave Studio. The mode generator was fabricated and checked on the test bench in an anechoic chamber. The measured field distributions confirm excitation of the desired TEm,1 modes. A good agreement between simulations and measurements is obtained. The presented mode generator, operating in non-rotating TEm,1 modes, is easy to fabricate, and suitable for cold-test experiments of high power components and devices.