Flexible multi-frequency antenna based on liquid crystal polymer substrate

A liquid crystal polymer and multi-frequency antenna technology, which is applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of increasing system design cost, system integration and integration difficulties, etc., and achieve simple structure and increase antenna bandwidth , the effect of good impedance matching characteristics

Pending Publication Date: 2019-05-10
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For these communication systems working in multiple frequency bands, several different antennas were often used in the past, which not only brought great difficulties to system integration and fusion, but also increased the design cost of the system

Method used

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  • Flexible multi-frequency antenna based on liquid crystal polymer substrate
  • Flexible multi-frequency antenna based on liquid crystal polymer substrate
  • Flexible multi-frequency antenna based on liquid crystal polymer substrate

Examples

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Embodiment

[0026] Such as Figure 1~3 As shown, a flexible multi-frequency antenna based on a liquid crystal polymer substrate includes a substrate 1, an antenna 2 and a ground plate 3, the substrate 1 is a flexible material, the antenna 2 is a circular radiation patch located on the front of the substrate 1, and the antenna 2 The main body is provided with two U-shaped slots, the antenna 2 has a feeder 4 on one side, and the ground plate 3 is located on the back of the substrate 1 .

[0027] The U-shaped groove is composed of straight segments, and the two U-shaped grooves are of different sizes, and the U-shaped groove close to the feeder 4 has a smaller size.

[0028] The feeding line 4 is a 50Ω microstrip line.

[0029] The ground plate 3 is composed of two 1 / 4 circles and a rectangular plate with a rectangular groove, the rectangular plate is located between the two 1 / 4 circles, and the three are seamlessly connected. The height of the ground plate 3 (ie the radius of the circle) ...

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Abstract

The invention relates to a flexible multi-frequency antenna based on a liquid crystal polymer substrate. The antenna comprises the substrate, an antenna body and a grounding plate; the substrate is made of a flexible material; the antenna body is a circular radiation patch located on the front surface of the substrate; two U-shaped grooves are formed in the antenna body; a feeder line is arrangedon one side of the antenna body; and the grounding plate is positioned on the back surface of the substrate. Compared with the prior art, the antenna adopts an LCP material, and has the advantages oflow dielectric loss, low hygroscopicity, high temperature resistance, chemical corrosion resistance, small thermal expansion coefficient, small thickness and the like; and the antenna is the circularradiation patch, the improved circular grounding plate is adopted, and the two U-shaped grooves are added in the round patch, so that a three-frequency working characteristic can be realized.

Description

technical field [0001] The invention belongs to the field of wireless communication and flexible electronic communication equipment, and relates to a wearable antenna, in particular to a flexible multi-frequency antenna based on a liquid crystal polymer substrate. Background technique [0002] With the rapid development of modern wireless communication technology, a variety of communication systems operating in multiple frequency bands have emerged. For example, the working frequency band of the wireless local area network communication system (WLAN) is 2.4 / 5.2 / 5.8GHz (2.4-2.484 / 5.15-5.35 / 5.725-5.825GHz), the working frequency band of Wi-MAX is 2.5 / 3.5 / 5.5GHz (2.5-2.69 / 3.4-3.69 / 5.25-5.85GHz), the fifth generation mobile communication system (5G) work The frequency band is 3.3 / 4.8GHz (3.3-3.6 / 4.8-5.0GHz). For these communication systems working in multiple frequency bands, several different antennas were often used in the past, which not only brought great difficulties to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48H01Q5/50H01Q5/28H01Q5/307
Inventor 杜成珠王倩李晓笛朱丽雪高超峰马天驰刘鹏程郑宇毅
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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