X-대역에서의 Foam 재료의 복소 유전율

Complex Permittivity of Foam Materials at X-Band

This paper investigates the complex permittivity of foam materials using the rectangular waveguide. The transmission coefficients of materials inserted in the waveguide are measured with a network analyzer and calculated from the equivalent transmission line model. We use the trial and error method in the acquisition of the complex permittivity.