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Stub loaded artificial magnetic conductor based high gain microstrip antenna

A technology of artificial magnetic conductor and microstrip antenna, which is applied in the direction of antenna, radiation element structure, electrical components, etc., can solve the problems of inconsistent current intensity distribution, enhance antenna radiation gain, etc., achieve low cost and weight, improve radiation efficiency, Effect of improving electric field intensity distribution

Inactive Publication Date: 2014-10-29
NANJING UNIV OF SCI & TECH
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Problems solved by technology

[0003] However, when several identical artificial magnetic conductor units form a reflector and are located below the antenna, since the distance between each unit and the antenna is different, the current intensity distribution on the surface of each unit is also inconsistent, so the radiation gain of the antenna cannot be enhanced to the greatest extent.

Method used

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  • Stub loaded artificial magnetic conductor based high gain microstrip antenna
  • Stub loaded artificial magnetic conductor based high gain microstrip antenna
  • Stub loaded artificial magnetic conductor based high gain microstrip antenna

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Embodiment 1

[0032] combine figure 1 and figure 2 , the microstrip antenna includes a rectangular patch antenna 1, a dielectric substrate I[2], a coaxial feeding probe 3 and an artificial magnetic conductor reflector 4 loaded with a branch. The artificial magnetic conductor reflector 4 loaded with branches is composed of 36 artificial magnetic conductor units 5 arranged in a square, and each artificial magnetic conductor unit 5 includes four parts, which are square metal patch 6, dielectric substrate 7, and metal floor 8. Strip metal branch 9. Among them, the length a of the rectangular patch antenna 1 is 5.25mm, and the width b is 10.5mm; the side length W of the square metal patch 6 is 7.8mm, and the length of the strip metal branch 9 is L, which is in the range of 0 to 2.5mm Inside, the width G of the narrow gap 10 is 0.4 mm; the materials of the dielectric substrate I[2] and the dielectric substrate II[7] are both Rogers RT / Duroid5880, and the dielectric constant ε r is 2.2, the di...

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Abstract

The invention provides a stub loaded artificial magnetic conductor based high gain microstrip antenna. Compared with a common artificial magnetic conductor based microstrip antenna, the stub loaded artificial magnetic conductor based high gain microstrip antenna adopts an artificial magnetic conductor reflecting surface with an aperiodic loaded stub, the electric field intensity distribution of the antenna surface can be effectively improved due to appropriate adjustment of the length distribution of the loaded stub, and accordingly the antenna working band, the radiation gain and the radiant efficiency are greatly improved and particularly the radiation gain is improved by 1.73dB and additionally, the antenna reserves the artificial magnetic conductor low profile character and the thickness of the integral structure is 0.05lambda. The antenna adopts a double-layer microwave dielectric-slab, is simple in structure, easy to machine, small in cost and weight relatively and accordingly allows production in a large scale.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a high-gain microstrip antenna based on a branch-loaded artificial magnetic conductor. Background technique [0002] In recent years, artificial magnetic conductors are one of the research hotspots in the field of microwave and millimeter waves. Utilizing its unique surface wave bandgap characteristics and the in-phase reflection characteristics of plane waves, the performance of the antenna can be effectively improved. F.Yang and Y.Rahmat-Samii et al. applied the artificial magnetic conductor structure around the microstrip antenna to suppress the propagation of surface waves, increase the gain of the antenna, and reduce the back lobe. At the same time, using it as the reflecting surface of the dipole antenna and the helical coil antenna can make the antenna close to the surface of the artificial magnetic conductor structure and realize a low-profile antenna. In addition, A.Foroozesh an...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H01Q19/10
Inventor 车文荃杨琬琛王昊
Owner NANJING UNIV OF SCI & TECH
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