Title :
Flexible isotropic antenna using a split ring resonator on a thin film substrate
Author :
Kim, In Kwang ; Varadan, Vasundara V.
Author_Institution :
Dept. of Electr. Eng., Univ. of Arkansas, Fayetteville, AR, USA
Abstract :
Isotropic antennas on thin Kapton films have been designed using a small dipole antenna and a split ring resonator (SRR) for 2.4 GHz applications. The size of the designed antenna is 0.24λ × 0.24λ and the electrical size (ka) is 0.75. The antenna has an isotropic radiation pattern and the maximum gain is 1.83dB. If the antenna is attached on a curved surface, the operating frequency increases as the radius of the surface decreases since the electrical length of the antenna decreases. When the radius of the surface is 0.04λ, the volume of the cylindrical antenna is 0.24λ × 0.08λ × 0.08λ and the radiation pattern is still isotropic.
Keywords :
UHF antennas; UHF resonators; antenna radiation patterns; dipole antennas; thin film devices; SRR; cylindrical antenna volume; flexible isotropic antenna; frequency 2.4 GHz; gain 1.83 dB; isotropic antenna radiation pattern; small dipole antenna; split ring resonator; thin Kapton film; thin film substrate; Antenna radiation patterns; Dipole antennas; Resonant frequency; Substrates; Surface impedance; conformal antenna; metamaterials; resonatorantenna; thin films;
Conference_Titel :
Antennas and Propagation (APSURSI), 2011 IEEE International Symposium on
Conference_Location :
Spokane, WA
Print_ISBN :
978-1-4244-9562-7
DOI :
10.1109/APS.2011.6058698
