Electromagnetic metamaterial patch antenna for radio frequency energy collection

A technology of electromagnetic metamaterials and radio frequency energy, which is applied in the structural connection of antennas, antenna grounding switches, and devices that enable antennas to work in different bands at the same time, can solve the problems of difficult replacement of power supply, affecting the range of use and service life of equipment, etc. Achieve the effect of low cost, excellent performance and small size

Pending Publication Date: 2022-01-21
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, many devices are affected by installation conditions, and their power supply is difficult to replace, which directly affects the range and service life of the device

Method used

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  • Electromagnetic metamaterial patch antenna for radio frequency energy collection
  • Electromagnetic metamaterial patch antenna for radio frequency energy collection
  • Electromagnetic metamaterial patch antenna for radio frequency energy collection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] The dielectric substrate 1 is FR4 with a thickness of 1.6mm, a length of 35mm, and a width of 35mm; a rectangular slot is provided on the radiation patch 4, the rectangular slotted radiation patch is 29mm long and 14mm wide, and the radiation patch 4 has an annular opening. Slots 2, 3, 7, and 8, among which slots 2 and 8 are symmetrical up and down, the slot length is 11.5mm, width 1.6mm, and the opening width is 1.6mm, slots 3 and 7 are symmetrical up and down, and the slot length is 5.9mm, width 0.6mm, and the width of the opening is 1.6mm; the bandwidth of the microstrip antenna can be increased by slotting the radiation patch, which changes the current distribution on the radiation patch, resulting in a change in the field distribution of the natural mode of the radiation patch, which interferes with the resonance of the antenna In order to achieve dual-frequency or multi-frequency operation; the coaxial line 5 is located at the center of the patch antenna, and is al...

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PUM

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Abstract

The invention relates to an electromagnetic metamaterial patch antenna for radio frequency energy collection, which comprises a dielectric substrate, a radiation patch, a coaxial line, a grounding plate, a microstrip line electromagnetic metamaterial unit, an impedance matching adjusting section and a lumped port, the radiation patch and the impedance matching adjusting section are arranged on the front surface of the dielectric substrate, and a microstrip line electromagnetic metamaterial is arranged on the back surface of the dielectric substrate. The upper and lower surfaces have good feed and electromagnetic weak coupling with the broadband characteristics can be realized. The microstrip line electromagnetic metamaterial unit is equivalent to an LC resonance circuit, inductance resonance and capacitance resonance are in the same frequency, current distribution on the radiation patch is changed, field distribution of a natural mode of the radiation patch is changed, and multi-band radio frequency signal receiving is achieved. The antenna is simple in structure, is small in size, is good in frequency characteristic, and is very high in practical value.

Description

technical field [0001] The invention relates to the technical field of radio frequency energy collection, in particular to an electromagnetic metamaterial patch antenna for radio frequency energy collection. Background technique [0002] In fields such as medical care, environmental monitoring, industrial automation, wireless sensor networks, and intelligent transportation systems, the application of low-power devices and devices is becoming more and more popular. However, many devices are affected by installation conditions, and their power supply is difficult to replace, which directly affects the range and service life of the device. With the gradual increase of wireless communication and broadcasting facilities, the power of radio frequency signals that can be collected in the environment is gradually increasing; at the same time, low-power devices are developing rapidly, and the demand for driving energy of low-power devices is gradually decreasing. Using the collected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q5/10H01Q5/28H01Q5/335H01Q5/50H01Q15/00
CPCH01Q1/38H01Q1/50H01Q5/335H01Q5/28H01Q15/0086H01Q5/10H01Q5/50
Inventor 李建坡高军马强徐征王文婷林琳聂其贵
Owner NORTHEAST DIANLI UNIVERSITY
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