Four-frequency notch ultra-wideband antenna based on dual-band resonant EBG structure

Abstract

The invention discloses a four-frequency notch ultra-wideband antenna based on a dual-frequency resonant EBG structure, belonging to the wireless communication field. The invention comprises a metal ground plate 12, a dielectric substrate 1, a circular radiation patch 2 of an antenna, a 50 ohm feeder 3, a dual-frequency resonant groove EBG unit A4, and a dual-frequency resonant groove EBG unit B10. and is characterized in that the circular radiation patch 2 and the 50 ohm feed line 3 of the antenna are located on the upper surface of the dielectric substrate 1, the metal ground plane 12 is located on the lower surface of the dielectric substrate 1, the dual-frequency resonant groove EBG unit A4 is loaded on the right side of the 50 ohm feed line 3, and the dual-frequency resonant groove EBG unit B10 is loaded on the left side of the 50 ohm feed line 3. The rectangular groove 11 is etched on the middle part of the surface of the metal ground plate 12 in contact with the dielectric substrate 1, and the width and the length of the rectangular groove 11 are 2.9 mm and 2.5 mm respectively. The circular radiation patch 2 of the antenna is circular in shape.

Description

technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to a four-frequency notch ultra-wideband antenna based on a dual-frequency resonance EBG structure. Background technique [0002] In 2002, the Federal Communications Commission of the United States allocated the working frequency band of 3.1-10.6GHz for civilian use, which enabled the rapid development of UWB. Ultra-wideband systems have broad prospects for development, but there are spectrum overlaps with other narrowband systems, including the 3.3-3.6GHz wireless metropolitan area network (Worldwide Interoperability for Microwave Access, WiMAX) frequency band, the international satellite band under 4.5-4.8GHz, 5.1-5.9GHz Wireless Local Area Network (WLAN) frequency band, 7.25-7.75GHz X-band satellite downlink signal, 8.01-8.5GHz International Telecommunication Union (International Telecommunication Union, ITU) frequency band, etc. The overlapping of working bands...

AI Technical Summary

Problems solved by technology

[0009] The content of the present invention is to improve the problem that the utilization rate of the resonant structure is not high in the notch technology of the original UWB antenna, and to make up for the defects of the radiation performance and size of the notch UWB antenna.

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