Title :
Superconducting microstrip filter for DCS1800 base station
Author :
Hong, J.S. ; Lancaster, M.J. ; Greed, R.B. ; Jedamzik, D.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
Abstract :
This paper describes the design of a highly selective superconducting microstrip bandpass filter for the DCS1800 base station. The filter exhibits a pair of attenuation poles at finite frequencies to improve the selectivity. The utilisation of meander open-loop resonators allows a very small and compact filter configuration to be realised. The filter is fabricated using YBa2Cu3O7 thin film HTS material on a MgO substrate that is only 0.3×39×22.5 mm. Measured results are presented
Keywords :
UHF filters; band-pass filters; barium compounds; cellular radio; high-temperature superconductors; microstrip filters; passive filters; resonator filters; superconducting filters; superconducting microwave devices; superconducting thin films; yttrium compounds; 1770 to 1785 MHz; DCS1800 base station; HTSC thin film; MgO; MgO substrate; YBa2Cu3O7 thin film; YBa2Cu3O7-MgO; attenuation poles; compact filter configuration; highly selective band-pass filter; meander open-loop resonators; superconducting microstrip filter; Attenuation; Band pass filters; Base stations; Frequency; High temperature superconductors; Microstrip filters; Resonator filters; Substrates; Superconducting filters; Transistors;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768380
