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A Narrow Slot UWB Antenna

An ultra-wideband antenna and slot technology, applied in the field of narrow-slot ultra-wideband antennas, can solve the problem of unstable antenna pattern, and achieve the effect of simple structure, narrow gap and easy integration

Active Publication Date: 2019-06-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a narrow-slot ultra-wideband antenna to solve the problem of unstable antenna pattern in the frequency domain of existing slot antennas that can be used for UWB work

Method used

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  • A Narrow Slot UWB Antenna
  • A Narrow Slot UWB Antenna
  • A Narrow Slot UWB Antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] like figure 1 As shown, a narrow-slot ultra-wideband antenna includes a microstrip line 1, a slot line 2, a slot-line coplanar waveguide conversion structure and a terminal opening radiation slot unit.

[0039] In this embodiment, the antenna is printed on a single-sided copper-clad 0.8mm thick FR-4 dielectric board, the slot line 2 is opened on the metal surface of the dielectric board, and the microstrip line 1 is printed on the dielectric board. On the non-metallic surface, the non-metallic surface is on the back of the metal surface. That is, in this embodiment, a slot is made on the metal surface side of the dielectric plate, and the designed microstrip line 1 is printed on the non-metal surface side to feed the slot. In this embodiment, the dielectric plate used for the antenna is a 0.8 mm thick FR-4 substrate, which is only used for supporting the metal plate and facilitating printing. In other embodiments, the antenna structure can also be used on other substra...

Embodiment 2

[0056] On the basis of Embodiment 1, the microstrip line 1 and the slot line 2 are further improved in this embodiment:

[0057] like figure 2 As shown in the figure, the end of the microstrip line 1 is in a stepped structure, and the width of the stepped structure decreases in turn along the direction from the front end to the end of the microstrip line 1 (that is, from the bottom at least), and the end of the microstrip line 1 A circular patch 5 is also attached. Specifically, the microstrip line 1 includes a microstrip line body 11 and a transition line 12. The transition line 12 includes a first transition line 121, a second transition line 122, a circular patch 5, a second transition line 122, The first transition line 121 and the main body 11 of the microstrip line are connected in sequence, and the widths of the second transition line 122 , the first transition line 121 , and the main body 11 of the microstrip line increase in sequence.

[0058] The slot line 2 is an...

Embodiment 3

[0070] The only difference between this embodiment and Embodiment 1 or Embodiment 2 is that the antenna structure in this embodiment is used on a metal surface without a substrate, that is, all the slots of the antenna are opened on the metal surface of the metal plate without a substrate, wherein , the slot line 2 is opened on the metal surface of the metal plate, and the microstrip line 1 is suspended on the back of the metal surface with the slit and does not contact the metal plate, that is, the microstrip line 2 becomes a suspended metal strip, and the position is not change without changing the electric field mode distribution of the feeder.

[0071] Since the substrate is only used for supporting the metal plate and facilitating printing, the substrate is not used in this embodiment. The rest of the structures are completely the same as in Example 1 or Example 2.

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Abstract

The invention discloses a narrow-slot ultra-wideband antenna, which comprises a microstrip line, a slot line, a slot line coplanar waveguide conversion structure and a terminal opening radiation slot unit. The slot line is set on a metal surface, and the microstrip line is printed on a The non-metallic surface on the back of the surface or suspended on the back of the metal surface; the front end of the slot line crosses the end of the microstrip line; the coplanar waveguide conversion structure of the slot line is used to transfer energy from the slot line to the coplanar waveguide transmission line; the terminal opening radiation slot The unit includes a plurality of radiation slots parallel to each other; the front end of the radiation slot is connected with a coplanar waveguide transmission line, and the end is opened. An antenna working mode similar to traveling waves can be formed on the slot antenna of the present invention, the energy can be transmitted evenly and with low loss, and finally a uniform electric field in the same direction can be formed on the radiation aperture, which has the characteristics of small size, narrow gap, simple structure, and easy integration with metal surfaces , and exhibits stable working characteristics on metal surfaces of different sizes, and can be widely used in a variety of terminal devices with metal surfaces.

Description

technical field [0001] The invention relates to an ultra-wideband antenna, in particular to a narrow-slot ultra-wideband antenna. Background technique [0002] Ultra-wideband (UWB) antennas generally use traditional monopole antennas or Vivaldi antennas, but the above two antennas can only guarantee good performance when used alone in actual use, but cannot guarantee stable radiation characteristics when integrated with a carrier. . Especially when the antenna is used for a metal carrier, in order to avoid the influence of the metal carrier, the antenna must be placed perpendicular to the metal surface, which inevitably introduces a higher antenna profile, which limits the application range of the antenna and cannot be applied to various applications. A new type of wireless communication terminal equipment. [0003] The slot antenna uses the slot of the metal surface to radiate, without introducing additional occupied volume, and is easy to integrate with the metal surface...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/10
CPCH01Q13/106
Inventor 赵志钦杨耀辉杨伟刘昱朗刘爽利
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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