Huge field enhancement in microwave range achieved by λ/2000-width antennas

Author

Kwanghee Lee ; Jiyeah Rhie ; Young-Mi Bahk ; Jeeyoon Jeong ; Dai-Sik Kim

Author_Institution

Dept. of Phys. & Astron., Seoul Nat. Univ., Seoul, South Korea

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

We observe strong electromagnetic field enhancement in extreme subwavelength antenna structures in microwave regime (Ku band, wavelength = 16.67~25 mm). Transmission spectra of antenna arrays with positive and negative geometries, fabricated by conventional photolithography technique, are measured by vector network analyzer (VNA) and waveguide setup. Estimated field enhancement of the negative antenna is ~130 and positive antenna also shows similar performance. These ultrathin-width antennas are good candidates for molecular sensing or nonlinear devices.

Keywords

electromagnetic fields; microwave antenna arrays; photolithography; Ku-band antenna; antenna arrays; microwave range; microwave regime; negative geometry; photolithography technique; positive geometry; strong electromagnetic field enhancement; subwavelength antenna structure; transmission spectra; vector network analyzer; Antenna arrays; Antenna measurements; Silicon; Slot antennas; Substrates; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956440

Filename

6956440