A miniaturized interdigital microstrip bandpass filter
| Autor: | A.P. Jenkins, David J. Edwards, D.M.C. Hyland, David Dew-Hughes, Kao-Cheng Huang |
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| Rok vydání: | 1999 |
| Předmět: |
Materials science
business.industry Bandwidth (signal processing) Condensed Matter Physics Microstrip Electronic Optical and Magnetic Materials law.invention Band-pass filter law Etching (microfabrication) Return loss Optoelectronics Insertion loss Electrical and Electronic Engineering Photolithography business Passband |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 9:3889-3892 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.783877 |
| Popis: | A 2.4 GHz three-stage microstrip bandpass filter was designed using a miniaturized interdigital capacitor structure to reduce the configuration in size. The filter was simulated by a finite element method software and then fabricated using TBCCO superconducting films on 20 mm/spl times/20 mm/spl times/0.5 mm MgO substrates. It was generated by photolithographic and wet etching process and packaged in a brass box. The bandwidth is 4% and the passband insertion loss of the filter was measured to be -0.4 dB at 77 K. The return loss is better than -8 dB. In particular, this filter has a sharper performance at its edge of fundamental pass band. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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