Higher-order improved dendriform fractal ultra-wideband trapped wave antenna with load hole

Abstract

The invention discloses a higher-order improved dendriform fractal ultra-wideband trapped wave antenna with a load hole and relates to an ultra-wideband antenna. The antenna is provided with a medium substrate and an SMA interface, wherein an upper surface conducting layer is paved on the upper surface of the medium substrate; a higher-order dendriform fractal patch array loaded with a round array hole is arranged on the upper surface conducting layer and is formed by adding two metal sides to each top end of a higher-order T-shaped dendriform fractal patch; a round hole is added to each of the two ends and the middle of a higher-order T-shaped dendriform fractal transverse tree branch; the round holes are the same in size and are symmetrically added; the diameter of the round holes is 80 percent of the width of the T-shaped tree branch; the round holes are used for generating electromagnetic coupling with the higher-order T-shaped dendriform array; a lower surface conducting layer is paved on the lower surface of the medium substrate; a rectangular slot structure is arranged in the middle of the lower surface conducting layer; and the SMA interface is connected with the upper surface conducting layer and the lower surface conducting layer of the medium substrate. The antenna is appropriate in size, simple in structure, large in impedance bandwidth, low in return loss and high in gain, and effectively prevents C wave band.

Description

technical field [0001] The invention relates to an ultra-wideband antenna, in particular to a high-order improved tree-shaped fractal ultra-wideband notch antenna suitable for a C-band ultra-wideband communication system. Background technique [0002] Ultra-wideband (Ultra-WideBand, UWB) technology is one of the hot topics in current research, especially after the FCC specified the 3.1-10.6GHz frequency band as a civil frequency band in 2002, it has attracted extensive attention from researchers at home and abroad. UWB technology is increasingly showing its superior performance in many fields such as communications, military applications, and radar systems, and has broad application prospects. Since the 1990s, in order to adapt to the development of wireless communication technology, the research trend of UWB antennas has been planarization and miniaturization, and some new UWB planar antennas have emerged continuously. At the same time, the UWB system still has compatibili...

AI Technical Summary

Problems solved by technology

[0003] The research on ultra-wideband antennas has achieved a lot of results, but at present, the research is mainly on the band-stop performance of ultra-wideband antennas in the WLAN802. Resistance performance, and the notch frequency band of the antenna is relatively blind, and it cannot accurately suppress unnecessary frequency bands, which affects the use of other frequency bands

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