Impedance formulas of RF patch resonators and antennas of cavity model using fringe extensions of patches from DC capacitors
| Autor: | Y.L. Chow, D. G. Fang, Y. X. Sun |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Permittivity
Physics Field (physics) business.industry Electrical engineering Field effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Resonator Capacitor Optics law Electrical and Electronic Engineering Antenna (radio) business Electrical impedance Microwave |
| Zdroj: | Microwave and Optical Technology Letters. 35:293-297 |
| ISSN: | 1098-2760 0895-2477 |
| DOI: | 10.1002/mop.10587 |
| Popis: | Fringe field effect is equivalent to an extension in size of an RF patch, either as resonator or as antenna. A CAD formula for this extension is derived from DC capacitor and is shown to be applicable for all practical thickness and permittivity er of the substrate. For example, for patch resonators of large er and for patch antennas on thick substrate (h/λ0 < 0.23), the maximum errors in resonant frequencies are only 0.2% and 3%, respectively. The fringe extension through DC is understandable in physics from the point of view of the frequency invariance of fringe field with thin substrate asymptotically. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 293–297, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10587 |
| Databáze: | OpenAIRE |
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