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Broadband-plane electric small antenna with coplanar waveguide feeding

A coplanar waveguide and electrically small antenna technology, applied in the field of radio antennas, can solve the problems of narrow bandwidth of electrically small antennas, achieve the effects of widening the working frequency band, improving impedance matching, standing wave ratio, and wide bandwidth

Inactive Publication Date: 2016-08-24
HENAN NORMAL UNIV
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AI Technical Summary

Problems solved by technology

[0003] "AEU: International Journal of Electronic and commination" 2011, 65(2): 148-153. Published an electrically small antenna working at 2.4GHz, and the reflection coefficient S of the electrically small antenna designed by impedance matching circuit at the working frequency point 11 It can be as low as -28dB or so, but the bandwidth of this electrically small antenna is very narrow, S 11 The relative bandwidth below -10dB is about 4.5%

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  • Broadband-plane electric small antenna with coplanar waveguide feeding
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  • Broadband-plane electric small antenna with coplanar waveguide feeding

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Embodiment Construction

[0011] Specific embodiments of the present invention,

[0012] A broadband planar electric small antenna fed by a coplanar waveguide. A grounding plate 1 is provided on a dielectric plate, and the geometric center of the dielectric plate is selected as the origin; two long slots 2 of a symmetrical coplanar waveguide are etched on the grounding plate. and the middle conduction band; a double helix radiation surface 5 is arranged symmetrically outside the two slits of the coplanar waveguide; finger-shaped slots 4 are etched near the middle conduction band near the radiation surface, and the rest is the feeding area 3 .

[0013] A coplanar waveguide-fed ultra-broadband double-helical radiating surface antenna according to the present invention includes: a ground plate 1 on a dielectric plate, and the center of the dielectric plate is selected as the coordinate origin; a coplanar waveguide is etched on the ground plate 1 The two slots 2, the feeding part 3, the loaded finger slot ...

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Abstract

The invention discloses a broadband-plane electric small antenna with coplanar waveguide feeding, wherein a grounding plate is disposed on a medium plate, and the geometric center of the medium plate is an original point; and two long gaps with a symmetrical coplanar waveguide and a middle conduction band are etched on the ground plate, dual-spiral radiation faces are disposed symmetrically on outer sides of the two gaps with the coplanar waveguide, and a finger-shaped gap is etched at the position of the middle conduction band near the radiation faces. The antenna disclosed by the invention has the beneficial effects that the dual-spiral radiation faces are used to reduce longitudinal and horizontal sizes of the antenna and expand a working frequency band of the antenna; and the antenna has a small size, the structure is relatively simple, and the antenna has a relatively wide bandwidth.

Description

Technical field: [0001] The invention relates to the technical field of radio antennas, in particular to a broadband planar electric small antenna fed by a coplanar waveguide. Background technique: [0002] In a wireless communication system, the size of the antenna is related to its working wavelength. Generally, when the electrical dimension T of the antenna is less than 1, it can be called an electrically small antenna. The electrical size of the antenna is T=KL, K is the free space wave number, and L is the maximum physical size of the antenna. As a key component of the front end of a communication system, an electrically small antenna has a great impact on wireless communication, especially mobile communication, due to its size, radiation efficiency, directivity, impedance matching and manufacturing cost. The development of the current communication market puts forward more and more requirements for the miniaturization, diversification, beauty and lightness of the ele...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/48H01Q1/38
CPCH01Q1/38H01Q1/48
Inventor 刘伟娜郝喜庆刘海瑞
Owner HENAN NORMAL UNIV
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