Ultra-Wideband Antenna with Triple-Bandstop Notch and Additional Beidou Bandpass Band Features

Abstract

The invention relates to an ultra-wideband antenna with the three-band-elimination trapped wave and extra Beidou band-pass frequency band characteristic and relates to an ultra-wideband antenna. The ultra-wideband antenna with the three-band-elimination trapped wave and extra Beidou band-pass frequency band characteristic is provided with a dielectric substrate, wherein conductor layers are laid on the upper surface and the lower surface of the dielectric substrate respectively, the conductor layer on the upper surface of the dielectric substrate is provided with a radiation patch and a gradually changed microstrip line feed structure, the radiation patch is provided with a gap structure, the outline of the radiation patch with the gap structure is in the shape of an approximate rectangle, the top end of the approximate rectangle is in an arc shape, an approximately C-shaped groove is formed in the radiation patch with the gap structure, the top end of the approximately C-shaped groove is of an arc structure, and the gradually changed microstrip line feed structure at the lower end of the radiation patch with the gap structure is of a gradually changed arc structure; the conductor layer on the lower surface of the dielectric substrate is provided with an approximately octagonal wide groove, a step branch and an approximately L-shaped branch structure, symmetrical stepped edge structures which are designed according to the bandwidth are arranged at the upper end of the approximately octagonal wide groove so that impedance matching can be realized freely, an approximately L-shaped branch which is arranged according to the bandwidth is arranged at the lower end of the approximately octagonal wide groove, and the step branch structure extends from the upper end of the approximately octagonal wide groove and is expanded into the frequency band of a Beidou navigation system.

Description

technical field [0001] The present invention relates to an ultra-wideband antenna, in particular to an ultra-wideband antenna suitable for suppressing global microwave interconnection access network (WiMax), satellite communication C-band and wireless local area network (WLAN) and adding additional Beidou navigation band-pass frequency bands . Background technique [0002] Ultra-Wideband (UWB) technology is a wireless communication technology applied to high-speed wireless data transmission and long-distance positioning. It has the advantages of high transmission efficiency, low power consumption, low cost, and strong anti-interference ability. It has become one of the research hotspots of wireless communication. In 2002, the U.S. Federal Communications Commission (FCC) passed regulations allowing the civilian use of ultra-wideband technology. The wireless technology with a fractional bandwidth greater than 20% or an absolute bandwidth greater than 500MHz is defined as UWB,...

AI Technical Summary

Problems solved by technology

[0007] Although in recent years, there have been many studies in the field of ultra-wideband antennas with notch characteristics, but they mainly focus on single-notch or double-notch, especially for triple-notch and above, and ultra-wideband antennas compatible with Beidou navigation system applications. Antenna has no successful examples yet

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