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High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate

A technology of monopole antenna and reflector, which is applied in the direction of antenna, slot antenna, radiation element structure, etc., to achieve the effect of simple and effective combination, compact structure and simple structure

Inactive Publication Date: 2013-10-23
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
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Problems solved by technology

Therefore, how to use the dual-frequency and multi-frequency EBG structures to improve the performance of dual-frequency and multi-frequency intra-antennas is extremely challenging

Method used

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  • High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate
  • High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate
  • High-gain G-shaped dual-frequency monopole antenna with loaded dual-frequency AMC reflection plate

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Embodiment Construction

[0039] First, select a dual-band antenna that meets the WLAN dual-band requirements. According to the WLAN system’s requirements for dual-frequency antennas, small size, and low cost, combined with the characteristics of low cost, light weight, and easy fabrication of monopole antennas, the G-shaped monopole antenna in Document 4 was selected. The impedance matching of the two center frequency points is consistent, and the structure of the radiation patch is modified. The specific structure of the antenna is as figure 1 (a) shown.

[0040] Second, design a dual-frequency AMC structure that meets performance requirements. The designed AMC structure should meet the following requirements: the two zero-reflection phase frequency points should be consistent with the two central operating frequencies of the antenna, and the two in-phase reflection regions should fully cover the frequency bands of the 2.4-GHz and 5.2-GHz systems; the AMC structure should have a small characterist...

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Abstract

The invention relates to a high-gain G-shaped dual-frequency monopole antenna with a loaded dual-frequency AMC reflection plate, and belongs to the technical field of electromagnetism propagation and receiving. According to the micro-strip-line-feed G-shaped dual-frequency monopole antenna with the loaded dual-frequency AMC reflection plate, the dual-frequency AMC reflection plate is loaded under the G-shaped dual-frequency antenna. The antenna is characterized in that under the condition that the section of the antenna is kept low, the maximum gain of a 2.4-GHz frequency band and a 5.2-GHz frequency band in a WLAN system reaches 7.2dBi, and backward radiation of the 2.4-GHz frequency band and the 5.2-GHz frequency band in the WLAN system reduces by 14.1dB and 13.7dB respectively. The designed high-gain dual-frequency antenna with the loaded AMC reflection plate can be used for a 2.4-GHz system (2.4GHz-2.48GHz) and a 5.2-GHz system (5.15 GHz-5.35GHz) in the WLAN system, and provides guidance for a high-gain antenna working in a dual-frequency WLAN system.

Description

technical field [0001] The invention provides a high-gain monopole antenna applied to the 2.4-GHz system (2.4GHz-2.48GHz) and the 5.2-GHz system (5.15GHz-5.35GHz) in the WLAN system, which belongs to the technology of electromagnetic transmission and reception field. Background technique [0002] In recent years, wireless local area network technology has developed rapidly, and 2.4-GHz and 5.2-GHz systems in WLAN systems are widely used. Printed monopole antennas are widely used in wireless communications due to their low price, light weight, and ease of fabrication. Meanwhile, the electromagnetic band gap (Electromagnetic Band Gap, EBG) structure can be used to improve the performance of the antenna. Therefore, the study of dual-frequency printed monopole antennas loaded with EBG structures has great application prospects. [0003] 1. WLAN system [0004] Wireless local area network is the product of the combination of computer network and wireless communication techno...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q13/10H01Q15/14H01Q13/08H01Q5/01H01Q5/10
Inventor 田慧平王绪东罗群果争纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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