Flexible ultra-wideband circularly-polarized antenna

A circularly polarized antenna, ultra-wideband technology, applied in antennas, resonant antennas, electrical short antennas, etc.

Active Publication Date: 2019-11-12
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the design of the existing ultra-broadband circularly polarized wearable antenna, the present invention provides a dual-arm helical dipole antenna that is plane-printed on a flexible dielectric layer and fed by a coplanar waveguide. At the same time, it also meets the requirements of portability and good toughness when deformation occurs.

Method used

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  • Flexible ultra-wideband circularly-polarized antenna
  • Flexible ultra-wideband circularly-polarized antenna
  • Flexible ultra-wideband circularly-polarized antenna

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Embodiment

[0027] Such as figure 1 with figure 2 As shown, the present embodiment provides a planar printed antenna made on a flexible substrate 9, and the antenna structure is designed as a dual-arm helical dipole antenna fed by a coplanar waveguide. The structure of the antenna of the present invention is simple, and only on the flexible substrate After direct printing or front printing, etch, the flexible substrate can choose a thinner flexible material with a dielectric constant of 2-3; the surface of the antenna floor 1 is etched to form a pair of closed radiation gap rings that are independent of each other. A pair of conductive coupling patches 2 separated by a slit is center-symmetric to form a double-armed spiral dipole;

[0028] Furthermore, the conductive coupling patch of each arm of the double-armed spiral dipole is designed as a "crescent" shape (or approximately a "C" shape), that is, the two gaps between it and the antenna floor 1 are also " "Crescent" shape (or "C" sh...

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Abstract

The invention discloses a flexible ultra-wideband circularly-polarized antenna, and belongs to the technical field of time domain ultra-wideband antennas. The invention provides a planar printing antenna on a flexible dielectric layer, and the antenna comprises an antenna floor, a radiation unit and a feed unit, wherein the radiation unit and the feed unit are arranged on the antenna floor, and the antenna floor comprises a flexible substrate and a conductive layer arranged on the top surface of the flexible substrate; the surface of the conductive layer is etched to form a pair of mutually independent closed radiation slot rings, and the closed radiation slot rings are crescent-shaped, and a pair of arc-shaped conductive coupling patches separated by the radiation slot rings are in central symmetry to form an S-shaped double-arm spiral dipole; and the feed unit adopts a coplanar waveguide feed structure. According to the design of the antenna, the antenna is endowed with circularly-polarized radiation performances, the overall profile is extremely low, the process is simple, the cost is low, the antenna is bendable and more portable, the antenna is wearable, and the antenna is suitable for the ultra-wideband positioning technology.

Description

technical field [0001] The invention belongs to the technical field of time-domain ultra-wideband antennas, in particular to a flexible ultra-wideband circularly polarized antenna. Background technique [0002] UWB technology is a new communication technology that is very different from traditional communication technology. It does not need to use the carrier in the traditional communication system, but transmits data by sending and receiving extremely narrow pulses with nanoseconds or less, so it has a bandwidth of GHz order. Compared with the traditional narrowband system, the ultra-wideband system has the advantages of strong penetration, low power consumption, good anti-multipath effect, high security, low system complexity, and can provide precise positioning accuracy. Therefore, UWB technology can be applied to positioning tracking and navigation of indoor static or moving objects and people, and can provide very precise positioning accuracy. [0003] The positioning...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q9/28H01Q9/04H01Q1/27
CPCH01Q1/273H01Q1/38H01Q1/48H01Q1/50H01Q9/0428H01Q9/045H01Q9/285
Inventor 杨德强郭俊雷王博宁杨鑫
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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