Broadband sleeve antenna for portable terminal device

A portable terminal and sleeve antenna technology, applied in the field of antennas, can solve the problems of large size, narrow bandwidth, unsatisfactory, etc., achieve the effect of improving the beautiful structure and solving the problem of multi-antenna interference

Inactive Publication Date: 2018-06-08
GUANGZHOU HAIGE COMM GRP INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The common feature of this type of antenna is that it is large in size, exceeding the struc

Method used

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  • Broadband sleeve antenna for portable terminal device
  • Broadband sleeve antenna for portable terminal device
  • Broadband sleeve antenna for portable terminal device

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Embodiment

[0041] For the problem of multi-band multi-antenna in the current portable terminal project, a design method of monopole broadband sleeve antenna is proposed. By expanding the loading part of the radiator of the monopole sleeve antenna (helical loading), that is, in the loading helix Add multiple turns of different diameter helixes at different positions, and use the idea of ​​multiple resonance points of the antenna to further expand the bandwidth on the basis of the traditional monopole sleeve antenna. Therefore, the problems of mutual interference of multiple antennas of the portable terminal equipment, the problem of insufficient bandwidth after the antenna is added with a sleeve, the problem of widening the bandwidth with a lossy device, and the problem of excessive size of the antenna are solved.

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Abstract

The invention discloses a broadband sleeve antenna for a portable terminal device, in combination with actual portable terminal device application, a broadband monopole sleeve antenna design based ona terminal structure body is provided under a condition that antenna structure size is limited, and an antenna band covers 225-678 MHz. In the design, conventional bandwidth broadening methods of adding lossy devices, such as a magnet ring, are discarded, and the design is realized through a sleeve structure and a helix loading mode, meanwhile, a spiral spring is designed to be roundabout so as torealize reduction of size, and a plurality of spiral radiators are connected in parallel under different thread pitches so as to realize broad band, thus, functions of a plurality of antennae can berealized by one antenna.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a broadband sleeve antenna for portable terminal equipment. Background technique [0002] With the rapid development of communication technology, portable terminal equipment has tended to multi-band, multi-module integrated development. Designed according to traditional ideas, such as figure 1 As shown, each communication mode has independent channels and antennas. Not only is the device large in size, high in cost, and has a large number of antennas, but also the isolation between antennas is not enough in the concurrent application mode, and the performance affects each other. At the same time, it affects the appearance of the device. In order to reduce mutual interference between antennas and have a beautiful structure, wideband antennas have become the mainstream design. [0003] Portable terminal products tend to be multi-mode integrated, and the frequency band covers a w...

Claims

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Application Information

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IPC IPC(8): H01Q1/36
CPCH01Q1/36
Inventor 林周福蒋晓红张路明江俊锋胡汉武林锡贵刘小雨马东贾瑞龙
Owner GUANGZHOU HAIGE COMM GRP INC
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