PERMEABILITY MEASUREMENT OF SPLIT-RING-RESONATOR METAMATERIALS FROM FREE-SPACE TRANSMISSION-ONLY CALIBRATION-INDEPENDENT METHODS
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, cilt.26, sa.1, ss.54-63, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 26 Sayı: 1
- Basım Tarihi: 2012
- Doi Numarası: 10.1163/156939312798954982
- Dergi Adı: JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.54-63
- Karadeniz Teknik Üniversitesi Adresli: Hayır
Özet
A promising calibration-independent microwave method is proposed for complex permeability extraction of metamaterial structures composed of periodic split-ring resonators. For the retrieval process, uncalibrated (raw) complex scattering parameter measurements of three measurement configurations in free-space are utilized. The advantage of the proposed method is that it employs the transmission-only scattering parameters of metamaterial slabs in the permeability retrieval. This approach improves measurement stability and accuracy and eliminates measurement errors, if any, occurring in reflection S-parameters of the slab. It is validated by retrieving the magnetic properties of various homogeneous metamaterial slabs.