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Dual-waveband plane inverse-F antenna with U shaped groove and folding line groove

A dual-band, U-shaped slot technology, applied to antennas, devices that enable antennas to work in different bands at the same time, slot antennas, etc., can solve the problems of inability to describe perturbation effects, complex field disturbances, etc., and achieve excellent bandwidth and radiation efficiency , The feeding system is simple, and the effect of good promotion and application prospects

Inactive Publication Date: 2009-01-14
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The field perturbation produced by the gap is very complex in nature and cannot be described by simple perturbation

Method used

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  • Dual-waveband plane inverse-F antenna with U shaped groove and folding line groove
  • Dual-waveband plane inverse-F antenna with U shaped groove and folding line groove
  • Dual-waveband plane inverse-F antenna with U shaped groove and folding line groove

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Embodiment Construction

[0028] see Figure 1 ~ Figure 3 , the composition and structure of which will be further described below in conjunction with the illustrated embodiment of the present invention—dual-band microstrip patch antenna. The present invention is a dual-band planar inverted F antenna, comprising: a metal ground plate 1, a metal patch 2 parallel to the metal ground plate 1, and an insulating filling medium between the metal patch 2 and the metal ground plate 1 8; One end of the antenna patch is bent vertically downwards and then bent vertically inwards, and the inwardly bent part 9 forms a capacitance with the ground plate; the antenna is vertically installed with a piece between the metal ground plate 1 and the metal patch 2 Short-circuit the rectangular metal sheet 6 and a feeding probe 7; there is a U-shaped gap, folded line gap 3 and folded line slots 4, 5 on the metal patch to excite multiple discrete resonant frequencies to achieve dual-band transmission or reception.

[0029] On...

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Abstract

The invention provides a dual-wave band planar inverted-F antenna, comprising a metal bonding sheet, and a grounding plate which is parallel to the metal bonding sheet. The metal bonding sheet of the antenna has a rectangular shape; the rectangular bonding sheet is provided with a U-shaped trough and a folding line trough; one end of the bonding sheet is bent in a direction vertical to the grounding plate and subsequently bent in the direction parallel to the grounding plate; the U-shaped trough is symmetric at the middle axis line of the metal bonding sheet; and two parallel edges are parallel to the middle axis line of the bonding sheet and the other edge is vertical to the middle axis line. The internal sides of two parallel edges of the U-shaped troughs are respectively provided with a gap, namely the folding line trough which is connected with the parallel edges and vertical to the parallel edges; a short-circuit rectangular metal sheet and a feed probing needle are vertically arranged between the metal bonding sheet and the grounding plate; the short-circuit metal sheet is arranged at one end of the edge of the metal bonding sheet; the feed probing needle is offset with the middle axis line of the metal bonding sheet and the short circuit metal sheet. The metal bonding sheet, the grounding plate and short-circuit metal sheet are made of copper. The feed probing needle is made of coaxial cable or micro-wave joint. The antenna of the invention has the advantages of small dimension, low manufacture cost, simple structure, etc.

Description

technical field [0001] The invention relates to a dual-band planar inverted-F antenna applied to wireless communication, and belongs to the technical field of resonant microstrip antennas. Background technique [0002] In recent years, people's demand for information and multimedia communication systems has been increasing, and the communication network has also continued to expand. Today, academia and engineering have made a lot of explorations and efforts in the field of multi-band microstrip antennas, the main direction is to reduce the size of the antenna while expanding its operating bandwidth. [0003] So far, many methods have been used to realize miniaturized dual-band microstrip antennas, including techniques for loading patches with shorting pins or strips, notches or slots, and capacitors. Various forms of loading are achieved by perturbing its field distribution and changing the resonant frequency composed of various modes. The required frequency ratio among di...

Claims

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Application Information

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IPC IPC(8): H01Q13/10H01Q13/08H01Q5/00H01Q1/38H05K3/06H01Q5/20H01Q5/328
Inventor 刘元安任炜黎淑兰吴利刚
Owner BEIJING UNIV OF POSTS & TELECOMM
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