Development of transparent radar absorber surfaces

Date

2025-1-09

Author

ER, UTKU

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Military platforms should be low observable systems because of the radio frequency (RF) stealthiness. Radar absorbing materials or structures play a key role in the design of such stealth military platforms. Organic radar absorbing materials are not transparent in visible region, therefore they can be used only at non-transparent regions of military systems. Absorption ability in long wavelength electromagnetic waves is also required at transparent materials in military systems (glass, polycarbonate, achrylc etc.) By different applications on these transparent surfaces, it is possible to make these surfaces absorber in microwave and (RF) region of electromagnetic spectrum. In this work, radar absorber surfaces were designed and produced by TCO contained multi-layer structures in 10x10 cm2 areas which are not only an absorber at 12-18 GHz bandwidth but also transparent in visible region. When all the results were examined, a 98% absorber and 76% optical transmissive sample was obtained across the wide band in the 12-18 GHz range. Moreover, structures provide IR blocking and do not allow in-vehicle imaging with IR detectors. All samples and results obtained as a result of the study are candidates for commercialization in terms of ease of transfer to large area.

Subject Keywords

Radar absorption, TCO thin films, Multi-layer structures, Bi-stealth applications

URI

https://hdl.handle.net/11511/113459

Collections

Graduate School of Natural and Applied Sciences, Thesis