Title :
High-temperature superconductor meander-antenna
Author :
Chaloupka, H. ; Piel, H. ; Pischke, A. ; Gleres, G. ; Peiniger, M. ; Schultz, L. ; Bode, M. ; Schubert, J.
Author_Institution :
Wuppertal Univ., Germany
Abstract :
A novel type of electrically small multiresonant microstrip antenna is presented. It possesses a bandpass frequency response characterized by a bandwidth which can be chosen to be relatively wide with respect to the small size of the antenna. Due to the miniaturization and especially the required narrow linewidth of the strip conductors a sufficiently high radiation efficiency can only be achieved by the utilization of superconductive material. Experimental results for a 4.2 GHz version of this multiresonant meander antenna made from the high-T/sub c/ superconductor YBCO epitaxially grown on LaAlO/sub 3/ with a size of lambda /sub 0//10 indicate a half-power bandwidth of 4% and a radiation efficiency of more than 60% at 77 K.<>
Keywords :
barium compounds; frequency response; high-temperature superconductors; microstrip antennas; superconducting devices; yttrium compounds; 4.2 GHz; 60 percent; 77 K; LaAlO/sub 3/; SHF; YBaCuO-LaAlO/sub 3/; bandpass frequency response; epitaxial growth; high-T/sub c/ superconductor; meander-antenna; microwave antennas; miniaturization; multiresonant microstrip antenna; radiation efficiency; strip conductors; Antenna theory; Bandwidth; Conducting materials; Dipole antennas; Frequency estimation; High temperature superconductors; Loaded antennas; Microstrip antennas; Reflector antennas; Resonance;
Conference_Titel :
Microwave Symposium Digest, 1992., IEEE MTT-S International
Conference_Location :
Albuquerque, NM, USA
Print_ISBN :
0-7803-0611-2
DOI :
10.1109/MWSYM.1992.187942
