High precision slotted cavity measurement of a novel ceramic state polymer electrolyte

2017 2nd International Conference on Innovative Engineering Materials

Quan, Wei^1 ; Nurulafsar, Mohammed^1,2

Electrical and Computer Engineering Department, Tufts University, United States^1

IEEE, United States^2

关键词: Complex dielectric permittivities;    Dielectric permittivities;    Electrically tunable;    Higher frequencies;    Polymer electrolyte;    Polymer thin films;    Radar absorbing coatings;    Vector network analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/284/1/012030/pdf
DOI  :  10.1088/1757-899X/284/1/012030

来源: IOP

【 摘 要 】

Thin film materials are already used in a variety of microwave and higher frequency applications such as electrically tunable microwave devices, integrated circuits like MMICs, radomes, and radar absorbing coating. The determination of the dielectric properties of these films is thus of significant importance. The measurement of complex dielectric permittivity of thin films is very difficult at microwave, millimeter, and THz frequencies because both the amplitude change and phase shift are not large enough to evaluate the real part of the dielectric permittivity. A specially designed transverse slotted cavity for X-band microwave measurement has been designed and constructed to employ with a vector network analyzer to evaluate the real part of dielectric permittivity of thin films accurately and conveniently. Commercially available polymer thin films are measured to validate the methods.