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Design of an X-Band Microwave Magnetic Absorber Composed of Multimode Dielectric Resonator Array

: Hamid, S.; Heberling, D.


Institute of Electrical and Electronics Engineers -IEEE-; Institute of Electronics, Information and Communication Engineers -IEICE-, Tokyo:
Asia-Pacific Microwave Conference, APMC 2018. Proceedings : 6-9 November 2018, Kyoto, Japan
Piscataway, NJ: IEEE, 2018
ISBN: 978-4-9023-3945-1
ISBN: 978-1-5386-2184-4
Asia-Pacific Microwave Conference (APMC) <2018, Kyoto>
Fraunhofer FHR ()

We present a method to design a broadband microwave absorber composed of lossy dielectric resonator array. The resonators have a cylindrical shape and are arranged in a square array above a metallic plate. The realized prototype consists of 32 × 32 resonators (25.6 cm × 25.6 cm × 0.5 cm). These resonators are made of materials from a commercial laminate magnetic absorber. The reflectivity at the X-band (8 GHz - 12 GHz) has been measured and compared to that of a commercial magnetic absorber. A reflectivity of -21 dB to -25 dB is achieved for this prototype, while that of -9 dB to -12 dB is obtained for the commercial one.