Ultra-wideband trapped wave antenna with good rectangular degree and controllable stop band bandwidth

Abstract

The invention provides an ultra-wideband trapped wave antenna with good rectangular degree and controllable stop band bandwidth. The ultra-wideband trapped wave antenna comprises a base plate, a floor I, a floor II, an antenna radiating body, an antenna feeder, a gap slot I, a gap slot II, a gap slot III and a gap slot IV, wherein the a floor I and the floor II are arranged on the front surface of the base plate; the antenna feeder is arranged in the middle of the bottom end of the front surface of the base plate; the same floor I and floor II are symmetrically arranged at the two sides of the antenna feeder; the gap slot I, the gap slot II, the gap slot III and the gap slot IV are arranged above the top of the antenna radiating body, and a space is respectively reserved between the gap slot I and the top of the antenna radiating body, between the gap slot II and the top of the antenna radiating body, between the gap slot III and the top of the antenna radiating body and between the gap slot IV and the top of the antenna radiating body; a coupling space is reserved between the gap slot I and gap slot II and between the gap slot III and gap slot IV respectively; and a coupling space is reserved between the gap slot I and gap slot III and between the gap slot II and gap slot IV respectively. The antenna provided by the invention has the characteristics of controllable trapped wave stop band bandwidth, good stop band rectangular degree and good pass band matching property; and with a coplanar waveguide feed structure, the antenna has small overall size and compact structure and is high in space utilization rate.

Description

technical field [0001] The invention relates to the technical field of antennas for wireless communication, and more specifically, relates to a small planar ultra-wideband antenna with a notch function. Background technique [0002] As radio communication equipment and electronic information equipment are developing towards multi-function and miniaturization, more and more research and application of ultra-wide band (Ultra-wide Band, UWB) communication technology has been obtained. UWB wireless communication technology has the advantages of simple structure, high data transmission rate, low power consumption, high security, and strong multipath resolution ability. Since the U.S. Federal Communications Commission (FCC) assigned the 3.1-10.6GHz frequency band to the UWB civil frequency band in February 2002, the design and application of UWB wireless communication systems have become the focus of fierce competition in the wireless communication field. UWB is especially suitab...

AI Technical Summary

Problems solved by technology

[0006] However, these methods can only form one or more notch frequencies or the notch bandwidth is narrow, and cannot completely suppress the interference of the WLAN narrowband system to the UWB system

And because the stopband bandwidth is insufficient, the filtering effect is poor, and many useful frequencies are wasted, and the literature of these structures rarely mentions the influence of the notch structure on the notch bandwidth

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