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ISM frequency band microstrip array antenna with negative permeability material and manufacturing method

A technology of negative magnetic permeability material and microstrip array, which is applied to devices, antennas, electrical components, etc. that make the antenna work in different bands at the same time, can solve the problems of complex impedance matching network, low bandwidth and gain of microstrip antenna, etc. Reach the effect of reducing half-power beam width, reducing side radiation, and suppressing side radiation

Inactive Publication Date: 2020-08-07
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming of the microstrip antenna bandwidth and the gain of the 2.45GHz ISM frequency band in the above-mentioned prior art that are low and the impedance matching network is complicated, provide a kind of ISM frequency band microstrip array antenna with negative magnetic permeability material and Production Method

Method used

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  • ISM frequency band microstrip array antenna with negative permeability material and manufacturing method
  • ISM frequency band microstrip array antenna with negative permeability material and manufacturing method
  • ISM frequency band microstrip array antenna with negative permeability material and manufacturing method

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Embodiment

[0060] First, the specific parameter information in this embodiment is described:

[0061] In this embodiment, four U-shaped slot array antennas 7 are etched, and the feed network 8 is a one-to-four feed network; the length of the first dielectric substrate 1 and the second dielectric substrate 5 are both Ls=143.2 mm, and the width is equal to Ws=175.7mm, the size of the rectangular through hole of the first dielectric substrate is: length Ls1=90.2mm, width Ws1=129.7mm. Wherein the first dielectric substrate 2 and the second dielectric substrate 5 are both epoxy resin (FR4) substrates, the dielectric constant is 4.4, the dielectric loss tangent is tanδ=0.02, and the thicknesses of the first dielectric substrate 2 and the second dielectric substrate 5 are respectively 1.6mm and 5mm.

[0062] See you again image 3 , the length of the rectangular patch of the U-shaped slot array antenna 7 is Lp=27.6mm, and the width is Wp=53.7mm; and along the U-shaped slot opening direction o...

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Abstract

The invention discloses an ISM frequency band microstrip array antenna with a negative permeability material and a manufacturing method thereof. The ISM frequency band microstrip array antenna comprises a first dielectric substrate, a second dielectric substrate and an SMA coaxial joint. An air cavity is arranged between the first dielectric substrate and the second dielectric substrate. The center of the first dielectric substrate is hollow, and the upper surface of the periphery of the hollow center is provided with a split-ring resonator array. The upper surface of the second dielectric substrate is provided with a microstrip feed line, a plurality of U-shaped groove microstrip antennas and a feed network. The plurality of U-shaped groove microstrip antennas are connected with one end of the feed network, and the other end of the feed network is connected with the SMA coaxial joint through a microstrip feed line. The lower surface of the second dielectric substrate is provided witha metal grounding plate. A negative permeability material is formed by periodically arranging split-ring resonators, so that a time-varying magnetic field of electromagnetic waves radiated from two sides is suppressed, the half-power beam width of far-field radiation is effectively reduced, and the gain of forward radiation is improved; a plurality of resonance points are generated by using the U-shaped groove microstrip antenna, and the plurality of resonance points are connected to realize a broadband; and the bandwidth and the gain of the microstrip array antenna can be effectively improved.

Description

technical field [0001] The invention belongs to the field of microstrip antennas, and relates to an ISM frequency band microstrip array antenna with negative magnetic permeability materials and a manufacturing method. Background technique [0002] As a key component of wireless communication, radio frequency antenna plays a very critical role in the communication process, and the microstrip patch antenna has received a lot of attention from academia and engineering because of its low profile, light weight, simple fabrication, and easy integration with integrated circuits. wide attention in the technical world. Therefore, in many communication antennas and radar systems, microstrip patch antennas are widely used. However, microstrip antennas also have some very obvious shortcomings in practical applications, such as narrow bandwidth, low gain, and low radiation efficiency. These shortcomings greatly limit the application and promotion of microstrip patch antennas in engineer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q5/50H01Q15/00
CPCH01Q5/50H01Q15/0086
Inventor 靳钊蔺琛智郭晨李璐高尧贺之莉薛晶晶
Owner CHANGAN UNIV
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