Title :
Superconducting quasi-elliptic function filter on r-plane sapphire substrate
Author :
Hong, Jia-Sheng ; Lancaster, Michael J. ; He, Yusheng
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Abstract :
This paper describes the recent development of a high temperature superconducting (HTS) microstrip bandpass filter on r-plane sapphire substrate. The filter was design to have a quasi-elliptic function response for a passband from 1710 to 1785 MHz, which covers the whole receive band of DCS1800 base station. The utilisation of cross meander open-loop resonators allows a very small and compact filter configuration to be realised. The filter was fabricated using YBa2 Cu3O7 (YBCO) thin film HTS material on a sapphire substrate that is only 0.33×39×22.5 mm. Excellent performance of the filter has been obtained
Keywords :
UHF filters; band-pass filters; barium compounds; elliptic filters; high-temperature superconductors; microstrip filters; passive filters; resonator filters; sapphire; superconducting filters; superconducting microwave devices; superconducting thin films; yttrium compounds; 1710 to 1785 MHz; Al2O3; DCS1800 base station receive band; HTSC microstrip bandpass filter; YBCO thin film HTS material; YBa2Cu3O7-Al2O3; YBaCuO thin film; compact filter configuration; cross meander open-loop resonators; high temperature superconducting film; quasi-elliptic function filter; r-plane sapphire substrate; superconducting UHF filter; Band pass filters; Base stations; High temperature superconductors; Microstrip filters; Passband; Resonator filters; Substrates; Superconducting filters; Transistors; Yttrium barium copper oxide;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2000, 2nd International Conference on. ICMMT 2000
Conference_Location :
Beijing
Print_ISBN :
0-7803-5743-4
DOI :
10.1109/ICMMT.2000.895648
