Title :
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
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;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956440
