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Numerical modeling of matched load with ceramic absorber

Keywords:

V.V. Komarov, M.S. Gnusarev


Microwave waveguide and coaxial matched loads are widely employed in measuring engineering and in modern radar and communication systems. Coaxial loads are intended for providing traveling wave regime in microwave circuits over a maximum frequency range. Some of these devices can absorb up to 1.5 kW microwave power. Sometimes additional components are used for air or liquid cooling. External sizes of such devices are still too large at frequencies less than 1 GHz. The model of small-sized complex-shaped matched load with inhomogeneous filling by SiC-ceramics and coaxial feeder is considered. Electromagnetic characteristics of homogeneous and inhomogeneous rectangular cavity resonator with cylindrical capacitance gap are analyzed, which is a basic unit of the matched load under study. Dimensions of the resonator and the absorber providing VSWR < 1,15 over the frequency range 910…930 MHz are found. Maximum size of the load is 120 mm.
References:

  1. Sazonov D.M. Antenny' i ustrojstva SVCh. M.: Vy'ssh. shk. 1988.
  2. Meshhanov V.P., Tupikin V.D., Cherny'shev S.L. Koaksial`ny'e passivny'e ustrojstva / Pod red. V.P. Meshhanova. Saratov: Izd-vo Sarat. un-ta. 1993.
  3. URL: www.microwaveeng.com
  4. URL: www.ketemicro.com
  5. Matsumoto H., Iino Y., Fujiwara C., Kabeya Z., Onda T.Experience on the high-power SiC microwave dummy-load using SiC absorber // Proc Particle Accelerator Conf., 1999, New York, USA. P. 842-843. 
  6. Eves E., Yakovlev V.V. Analysis of operational regimes of a high power water load // International Journal of Microwave Power and Electromagnetic Energy. 2002. V. 37. № 3. P. 127–144.
  7. Lee H.-M., Zaki K.A., Atia A.E., Piloto A.J. Design and diagnosis of wideband coupled-resonator bandpass filters // IEEE Trans. on Microwave Theory and Techniques. 2012. V. 60. № 5. P. 1266–1277.
  8. Fouladi S., Huang F., Yan W.D., Mansour R.R. High-Q narrowband tunable combline bandpass filters using MEMS capacitor banks and piezomotors // IEEE Trans. on Microwave Theory and Techniques. 2013. V. 61. № 1. P. 393–402.
  9. Wang Y., Yu M. Inline realization of cascaded trisection and cascaded quadruplet in coaxial cavity filters // Proc. of the 39th European Microwave Conference, 2009, Rome, Italy. P. 448–451.
  10. Gnusarev M.S., Komarov V.V. Dvuxurovnevoe modelirovanie czilindricheskogo i pryamougol`nogo rezonatorov s emkostny'm zazorom // Matematicheskie metody' v texnike i texnologiyax. Materialy' mezhdunar. nauch.-texn. konf., Saratov, 2011, T. 10. S. 93–94.
  11. URL: www.sigmaplot.com
  12. Komarov V.V. Optimizacziya S-parametrov chislenny'x modelej dissipativny'x SVCh-e`lementov slozhnoj konfiguraczii // E`lektromagnitny'e volny' i e`lektronny'e sistemy'. 2006. T. 11. № 2/3. S. 64–73.
  13. URL: www.qwed.com.pl

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