Title :
A compact narrowband HTS microstrip filter for PCS applications
Author :
Hong Teuk Kim ; Byoung-Chul Min ; Young Hwan Choi ; Seung-Hyun Moon ; Seung-Min Lee ; Byungdu Oh ; Jin-Taek Lee ; Ikmo Park ; Chull-Chai Shin
Author_Institution :
LG Corp. Inst. of Technol., Seoul, South Korea
fDate :
6/1/1999 12:00:00 AM
Abstract :
We have fabricated a compact narrowband microstrip hairpin-comb filter for PCS applications by patterning double-sided YBCO films prepared by pulsed laser deposition on a 50-mm-diameter, 0.5-mm-thick LaAlO/sub 3/ wafer. To achieve the desired performance with the size limitation, folded half-wavelength resonators are all oriented in the same direction. We design the filter with the aid of a commercially available full-wave EM simulator, ENSEMBLE, which is based on the method of moments. The 11-pole filter has a 0.6 dB minimum insertion loss and 11.5 MHz bandwidth at 1.778 GHz, and shows a very sharp skirt and strong stopband characteristics. The measurement data are in good agreement with the simulated result.
Keywords :
UHF filters; band-stop filters; barium compounds; comb filters; digital simulation; high-temperature superconductors; method of moments; microstrip filters; personal communication networks; pulsed laser deposition; superconducting microwave devices; superconducting resonators; superconducting thin films; yttrium compounds; 0.5 mm; 0.6 dB; 1.778 GHz; 11.5 MHz; 50 mm; ENSEMBLE; LaAlO/sub 3/; PCS applications; YBaCuO-LaAlO/sub 3/; folded half-wavelength resonators; full-wave EM simulator; hairpin-comb filter; insertion loss; method of moments; narrowband HTS microstrip filter; pulsed laser deposition; size limitation; stopband characteristics; High temperature superconductors; Insertion loss; Microstrip filters; Moment methods; Narrowband; Optical pulses; Personal communication networks; Pulsed laser deposition; Resonator filters; Yttrium barium copper oxide;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
