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A floor-mounted curve groove type elliptic plane monopolar antenna

A monopole antenna and curved slot technology, applied in the microwave field, can solve the problems of large antenna size and difficulty in meeting the miniaturization requirements of mobile communications, and achieve the effects of expanding bandwidth, improving performance, and improving impedance characteristics

Inactive Publication Date: 2007-10-24
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large distance that must be maintained between the inner edge of the floor slot and the outer edge of the microstrip patch in this method, the antenna size is larger, especially at lower frequency bands
Therefore, although the wide-slot microstrip antenna has ultra-wideband characteristics, it is difficult to meet the requirements of mobile communication to achieve broadband and miniaturization at the same time.

Method used

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  • A floor-mounted curve groove type elliptic plane monopolar antenna
  • A floor-mounted curve groove type elliptic plane monopolar antenna
  • A floor-mounted curve groove type elliptic plane monopolar antenna

Examples

Experimental program
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Embodiment 1

[0017] Embodiment 1: as shown in Fig. 1a, Fig. 1b, antenna (1); Microstrip feeder (2); Floor (3); Arc groove (4); Dielectric plate (5), Fig. 1a, Fig. 1b give The structure and parameters of the floor (3) curved slot elliptical planar monopole antenna are given. The floor (3) has an arc-shaped groove (4), and the edge of the arc-shaped groove (4) is parallel to the edge of the antenna (1) of the oval plane monopole. Different floor bending groove structures can be obtained by changing its structural parameters. In order to prove the change of the floor bending groove structure to the performance of the antenna (1) and to understand the effect of different structures, the comparison of the return loss on different floor structures under two operating frequencies was calculated by simulation software, as shown in Table 1. The specific structural settings are shown in Figures 5, 6, and 7 below: the dielectric constant of the medium ε = 3.43, and the width of the microstrip feeder...

Embodiment 2

[0021] When designing an antenna (1) with an elliptical or circular plane monopole, use the floor arc groove structure, cut the arc groove (4) on the floor (3), and the edge of the arc groove (4) and The edges of the antenna (1) are parallel, and the size of the arc-shaped groove (4) is adjusted to achieve the best effect, so as to improve the radiation performance of the antenna (1). Numerical calculation results;

[0022] Simulation software was used to simulate A1, A2 and B, and Fig. 2, Fig. 3 and Fig. 4 respectively show the S 11 The magnitude of the parameter varies with frequency. Figure 8 compares the curves of the three structures, and it can be seen from Figure 8 that the floor arc groove (4) structure B parallel to the edge of the antenna (1) (ellipse) circular radiation piece compares with A1 and A2, and the reflection Coefficient S 11 significantly reduced, indicating that the use of the floor arc groove (4) structure parallel to the edge of the antenna (1) (ell...

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Abstract

The invention discloses a circular or near-circular flat mono-pole antenna with bending slot on its ground, wherein the bending slot parallels to the antenna edge. This invention improves the resonance and frequency band, reduces antenna size, and plays key role for antenna research.

Description

technical field [0001] The invention relates to a floor curved groove type elliptical planar monopole antenna, which belongs to the field of microwave technology in electronic science and technology. Background technique [0002] The planar antenna has the advantages of simple structure, light weight, small size, low price, easy realization of multi-band, small profile height, and easy connection with microstrip feed network, so it is widely used in modern communications. However, broadband performance and miniaturization of planar monopole antennas are difficult to achieve simultaneously. Solving this problem has become the research focus of antenna workers. [0003] In the research process, someone proposed a method of widening the frequency band by opening wide slots in the floor based on the microstrip antenna with slots in the floor, and an ultra-wideband planar antenna has been developed by using this method. However, due to the large distance that must be maintained...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q13/08H01Q9/30
Inventor 张安荣王均宏
Owner BEIJING JIAOTONG UNIV
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