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Circularly polarized wearable antenna

A circular polarization and antenna technology, applied in the field of circular polarization wearable antennas, can solve the problems of poor robustness, difficulty in wearing, narrow axis ratio bandwidth of circular polarization antennas, etc., and achieve small size, small deformation, and stable antenna gain Effect

Active Publication Date: 2022-04-15
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a circularly polarized wearable antenna to solve the problems in the prior art that the axial ratio of the circularly polarized antenna is narrower than the bandwidth, not easy to wear, and has poor robustness

Method used

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0030] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. ...

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Abstract

The invention discloses a circularly polarized wearable antenna which comprises an upper felt substrate, a lower felt substrate, an upper polyimide film circuit and a lower polyimide film circuit. The upper polyimide film circuit and the lower polyimide film circuit are fixedly connected with the upper felt substrate and the lower felt substrate in a stacked mode. The upper polyimide film circuit and the lower polyimide film circuit are electrically connected with a plurality of groups of metal patches; a small hole is formed in the center of the lower felt base plate; the metal patch on the lower polyimide film circuit is provided with a U-shaped groove. According to the antenna, the circular polarization effect is achieved in a wide frequency band, the axial ratio bandwidth below 3dB exceeds 45%, the antenna gain is stable, the 3dB gain bandwidth exceeds 66%, and the antenna is made of a flexible material, small in size and suitable for being worn by a human body.

Description

technical field [0001] The invention relates to a circularly polarized wearable antenna, which belongs to the technical field of wireless mobile communication. Background technique [0002] Wireless Body Area Network (WBAN) is a dedicated wireless communication network centered on the human body. As an important part of the fifth generation mobile communication system, it has been widely used in medical, entertainment and military fields. With the continuous development of wearable devices, wireless body area network communication is also facing more and more challenges. Considering that in the in vitro communication scenario, due to the movement of the person's position and the change of the posture, the antenna deformation is likely to be caused. It is difficult for the linear polarization antenna to ensure that the polarization direction of the transceiver node is always consistent, which will lead to a decrease in the communication efficiency of the antenna, while the ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/27H01Q1/08
Inventor 赵晨李文冉潘成胜
Owner NANJING UNIV OF INFORMATION SCI & TECH
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