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Double-notch ultra-wideband antenna based on liquid crystal polymer

A liquid crystal polymer, ultra-wideband antenna technology, which is applied to antennas, antenna coupling, antenna grounding devices, etc., can solve the problems of complex antenna structure and process, and achieve the effects of low cost, good matching, and low thermal expansion coefficient.

Pending Publication Date: 2019-05-14
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Designing a coplanar waveguide ultra-wideband antenna with notch characteristics is one of the important methods to solve such problems, and at the same time solve the problem that the current antenna structure and process are relatively complicated

Method used

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  • Double-notch ultra-wideband antenna based on liquid crystal polymer
  • Double-notch ultra-wideband antenna based on liquid crystal polymer

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Embodiment

[0024] Such as figure 1 As shown, a double-notch ultra-wideband antenna based on liquid crystal polymer, including a substrate, a ground plane 1, a feed line 2 and a radiation patch 3, the ground plane 1, feed line 2 and radiation patch 3 are located on the same side of the substrate , is a coplanar waveguide structure. The substrate is a plate made of liquid crystal polymer with a thickness of 0.1 mm. The radiation patch 3 is an elliptical structure with a split resonance ring. The split resonance ring is an ellipse with a gap, and the gap faces the radiation patch 3 and the feeder. 2, the ground plate 1 is located on both sides of the feeder 2 and has a U-shaped groove.

[0025] The feeding line 2 is in the shape of a long strip with gradually changing width, and the width gradually increases toward the direction away from the radiation patch 3 .

[0026] The connection between the radiation patch 3 and the feeder 2 has two arc-shaped branches, and the two branches are sym...

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Abstract

The invention relates to a double-notch ultra-wideband antenna based on a liquid crystal polymer. The double-notch ultra-wideband antenna comprises a substrate, a grounding plate, a feeder line and aradiation patch, wherein the grounding plate, the feeder line and the radiation patch are arranged on the substrate; the substrate is made of a liquid crystal polymer board; the radiation patch is ofan oval structure with an opening resonance ring, and the opening resonance ring is an oval with a notch, wherein the notch faces the connecting position of the radiation patch and the feeder line; and the grounding plate is located on the two sides of the feeder line. Compared with the prior art, the dielectric substrate material uses the liquid crystal polymer, the opening resonance ring is adopted on the oval patch, and a U-shaped groove structure is formed on the grounding plate, so that the antenna has the advantages of being low in cost, high in performance, small in size, double in notches and the like.

Description

technical field [0001] The invention relates to an ultra-wideband antenna, in particular to a liquid crystal polymer-based double-notch ultra-wideband antenna. Background technique [0002] In 2002, the U.S. Federal Communications Commission (FCC) issued a new specification for broadband communication systems, with the purpose of alleviating the shortage of frequency band resources and responding to the needs of high-speed communication. The technology will be widely used in industry, medicine, civil life and other fields. However, the working frequency band of UWB antenna is different from that of existing narrowband systems, such as Wimax system (3.4-3.69GHz, 5.725-5.85GHz), WLAN system (5.15-5.35GHz, 5.725-5.825GHz) and X-band (7.25-7.75GHz , 7.9-8.4GHz) frequency bands overlap, which is prone to interference. Generally, a filter can be introduced into the ultra-wideband system to generate a notch in the corresponding frequency band, thereby reducing the signal interfer...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q1/52H01Q15/00
Inventor 杜成珠朱丽雪高超峰马天驰李晓笛
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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