Ultra-wideband monopole antenna with three band rejection characteristics

A monopole antenna, ultra-wideband technology, applied in the direction of antenna coupling, antenna grounding switch structure connection, radiation element structure, etc., can solve the problems of narrow working bandwidth, low frequency band utilization, and tight frequency band resources, etc., to achieve interference suppression , high frequency band utilization, and the effect of improving practicability

Inactive Publication Date: 2015-09-16
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of wireless communication and the emergence of various applications, problems such as the shortage of frequency band resources, low frequency band utilization, narrow working bandwidth, and overlapping working frequency bands of different devices or antennas cannot be ignored. Reliability of Antennas and Practicality of Wireless Communication Systems

Method used

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  • Ultra-wideband monopole antenna with three band rejection characteristics
  • Ultra-wideband monopole antenna with three band rejection characteristics
  • Ultra-wideband monopole antenna with three band rejection characteristics

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Such as figure 1 with figure 2 Shown: an ultra-wideband monopole antenna with three stopband characteristics, including a ground plate 1, a dielectric substrate 2, a feed network 3 and a radiation patch 4, and the ground plate 1 is a narrow rectangle with the same width as the dielectric substrate 2 structure, and the grounding plate 1 is provided with a rectangular slot 8, the dielectric substrate 2 is made of commonly used FR4 (epoxy resin) plate material, its relative permittivity is 4.4, and the loss tangent value is 0.02. The antenna in this embodiment It is fabricated on a dielectric substrate 2 with a length, width, and height of 20mm, 25mm, and 1.6mm by etching, wherein the ground plate 1 is printed on one side of the dielectric substrate 2, and the other side of the dielectric substrate 2 is printed with a feeder The electric network 3 and the radiat...

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Abstract

The invention discloses an ultra-wideband monopole antenna with three band rejection characteristics. The ultra-wideband monopole antenna comprises a grounded plate, a dielectric substrate, a feeding network and a radiation patch. The ultra-wideband monopole antenna is characterized in that a rectangular slot is arranged in the grounded plate; the grounded plate is arranged on one side of the dielectric substrate; the feeding network and the radiation patch are arranged on the other side of the dielectric substrate, wherein the feeding network and the radiation patch are connected with each other; an inverted-I-shaped slot, an inverted-U-shaped slot and a cross-shaped slot are etched on the radiation patch; and the feeding network comprises a microstrip line. According to the invention, the antenna can produce band rejection characteristics in the bands of 3.3 to 4.29GHz and 5.15 to 6.0GHz; interference generated by three narrowband systems on an ultra-wideband system can be effectively suppressed, wherein three narrowband systems comprises WiMAX wireless communication with the effective work band from 3.3 to 3.7GHz, C-band satellite communication with the downlink band from 3.7 to 4.2GHz, WLAN (from 5.15 to 5.825GHz) wireless application; and the antenna has the advantages of small size, simple structure and easy manufacture, and is suitable for wireless communication systems and equipment.

Description

technical field [0001] The invention relates to the technical field of antennas, and more specifically relates to an ultra-wideband monopole antenna with multi-band rejection characteristics. Background technique [0002] In the past few decades, wireless communication has developed rapidly and has broad prospects, and has received extensive attention. Among them, ultra-wideband technology and its communication system have always been an important part of communication due to its importance in wireless communication and its incomparable advantages such as high data rate, low loss, economical and practical, and low complexity. important topic of research in the field. However, with the rapid development of wireless communication and the emergence of various applications, problems such as the shortage of frequency band resources, low frequency band utilization, narrow working bandwidth, and overlapping working frequency bands of different devices or antennas cannot be ignored...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52
Inventor 金杰张强刘青爽李茜
Owner TIANJIN UNIV
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