| 摘要 |
A fractal slot antenna developed for wideband communications with a reflector that increases the gain and preserves the wideband capability of the antenna. This is a typical microstrip slot antenna that is consisted from microstrip feed and radiating slot made in conductive ground. The slot shape is modified in meanings of fractal geometry. The antenna main advantage is the relatively large bandwidth and moderate efficiency. In a typical microstrip antenna the presence of reflector decreases the antenna bandwidth. Authors of this patent has discovered that applying fractalization rules in several orders to the radiating slot of the microstrip slot antennas improves their properties and particularly gain, efficiency and bandwidth in the presence of reflector. This rule will help the creation of so called "ultra wide band" antennas-with operational bandwidth more than 1-10 GHz. This antenna implementation is a recommended for WiMax, WiFi, Ultra Wideband (UWB), cell phone, GPS, DAB and various automotive implementations that need well integrated, wide bandwidth and high gain antennas.
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