A compact narrowband HTS microstrip filter for PCS applications

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-wavelen...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1999-06, Vol.9 (2), p.3909-3912
Main Authors: HONG TEUK KIM, MIN, B.-C, YOUNG HWAN CHOI, MOON, S.-H, LEE, S.-M, OH, B, LEE, J.-T, PARK, I, SHIN, C.-C
Format: Article
Language:English
Subjects:
APPLICATIONS
Applied sciences
Circuit properties
COMPUTER SIMULATION
COPPER OXIDE
DEPOSITION
Electric, optical and optoelectronic circuits
Electronics
Equipments and installations
Exact sciences and technology
High temperature superconductors
Insertion loss
Microstrip filters
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Mobile radiocommunication systems
Moment methods
Narrowband
Noise levels
Optical pulses
Patterning
Personal communication networks
Pulsed laser deposition
Radiocommunications
Resonator filters
Simulation
Skirts
SUPERCONDUCTIVITY
SUPERCONDUCTORS
Telecommunications
Telecommunications and information theory
YBCO superconductors
Yttrium barium copper oxide
YTTRIUM OXIDE
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Description
Summary: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.
ISSN:1051-8223
1558-2515
DOI:10.1109/77.783882