UDC 537.876

Wideband waveguide terminators based on ferroepoxide

V. N. Semenenko, K. M. Baskov, D. I. Akimov, A. A. Politiko, V. A. Chistyaev, A. Yu. Zarubina
Institute for Theoretical and Applied Electromagnetics of the Russian Academy of Sciences, Izhorskaya 13, Moscow 125412, Russia

The paper is received on July 3, 2019

 

Abstract. Waveguide terminators form a part of many microwave systems. One of the most significant values of waveguide terminators is the standing wave coefficient. Low level of the standing wave coefficient value of waveguide terminator is achieved by placing into it a resistive element made from appropriate radar absorbing material of special shape. A radar absorbing material with unique electromagnetic properties was developed. The material based on carbonyl iron and epoxy resin. The possible application of the material was studied at the paper. Particularly, it is shown that the radar absorbing material can be used for manufacturing of waveguide terminators of waveguide types WR-159, WR-112 č WR-90. The calculation results for waveguide terminators with absorbers having simple wedge, pyramid and exponential wedge shapes with optimized geometrical parameters are shown. Calculations are performed by the electrodynamic modeling software package FEKO using electrodynamic parameters, such as permittivity and permeability of the material measured on a sheet sample. Verification of numerical simulation results were performed on the WR-159 waveguide with the simple wedge-shaped absorber. Implementation of the developed radar absorbing material one allows to achieve low values of standing wave coefficient at the lower length of the absorber that can find benefits in the application of small microwave devises.

Key words: radar absorbing material, waveguide terminator, standing wave coefficient, electromagnetic design.

References

1.     Stander T., P.W. van der Walt, P. Meyer. A comparison of simple low-power wedge-type X-band waveguide absorbing load implementations. Proceedings of  AFRICON 2007, Windhoek, Namibia.  September 2007. pp. 1-4.

2.     Baskov K.M., Politico A.A., Semenenko V.N., Chistyaev V.A. Measurement error correction of S-parameters in determining the complex permittivity and permeability of magneto-dielectric composites in free space using the diaphragm. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No.5. Available at http://jre.cplire.ru/jre/may17/7/text.pdf  (In Russian)

3.     Alexeenkov V.I., Galetskij A.V., Vasilev V.I., Potapova V.I. Measurement of the feroepoxided’s ceramic parameters in microwave. Proceedings of 5 All-Russian conference «Elektronica i mikroelektronika SVCh» [Microwave electronics and microelectronics»]. Saint-Petersburg, SSETU «LETI», 2016, Vol 1, pp. 51-55. (In Russian)

4.     Altair FEKO - a multifunctional software package for numerical electromagnetic modeling (CEM) for solving a wide range of research and engineering problems [online]. Available at https://www.altair.com

For citation:

V. N. Semenenko, K. M. Baskov, D. I. Akimov, A. A. Politiko, V. A. Chistyaev, A. Yu. Zarubina. Wideband waveguide terminators based on ferroepoxide. Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 7. Available at http://jre.cplire.ru/jre/jul19/9/text.pdf
DOI  10.30898/1684-1719.2019.7.9