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Dual ellipse combined monopole antenna fed by tapered coplanar waveguide

A technology of monopole antenna and coplanar waveguide, which is applied in the field of short-range broadband communication, double ellipse combined monopole antenna, and antenna, can solve the problems of narrow lobe width and limited range of microstrip antenna, and reduce radiation Effects of loss, gain stability, and good omnidirectional radiation characteristics

Inactive Publication Date: 2017-12-08
JINLIN MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Microstrip antennas have the advantages of light weight, small size, low processing cost, and easy integration with active devices. However, the lobe width of microstrip antennas is narrow, which limits its application to broadband antennas.

Method used

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  • Dual ellipse combined monopole antenna fed by tapered coplanar waveguide
  • Dual ellipse combined monopole antenna fed by tapered coplanar waveguide
  • Dual ellipse combined monopole antenna fed by tapered coplanar waveguide

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Embodiment Construction

[0012] The specific embodiment of the present invention is: as figure 1 As shown, a dual-ellipse combined monopole antenna fed by a gradual coplanar waveguide is composed of a dielectric substrate, a double-ellipse combined radiation unit (1) printed on the same side of the dielectric substrate, and a gradual coplanar waveguide (2). , a ladder structure floor (3) and an external coaxial joint (4). The double ellipse combined radiating unit (1) is composed of upper and lower semi-ellipses with different lengths of major and minor axes and an axial ratio of 1.25, which are symmetrically combined along the major axis. Low-frequency cut-off frequency, increase the length of low-frequency effective current path, open a circular hole in the middle of the radiation unit, change the current flow direction on the metal surface, effectively reduce the standing wave ratio in the required bandwidth, and improve the antenna working bandwidth. It feeds power, reduces radiation loss, and ad...

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Abstract

The invention discloses a dual ellipse combined monopole antenna fed by a gradual change coplanar waveguide, which consists of a dielectric substrate, a double ellipse combination radiation unit printed on the same side of the medium substrate, a gradual change coplanar waveguide, and a floor with a ladder structure and external coaxial connectors. The double ellipse combined radiating unit is composed of upper and lower semi-ellipses with different long and short axis lengths and an axial ratio of 1.25. A round hole is opened in the middle of the unit to adjust the bandwidth matching. It is fed through a gradual coplanar waveguide to reduce radiation loss and adjust the input impedance. The floor adopts a ladder structure to form multi-resonance, broadband and good omnidirectionality. radiation properties. The antenna has the characteristics of wide frequency band, miniaturization, simple structure, convenient processing, easy conformal, etc. The effective working bandwidth is 2.4-12.6 GHz, the radiation characteristic is stable, and it is suitable for short-distance broadband communication.

Description

technical field [0001] The invention relates to an antenna in the technical field of wireless communication, in particular to a dual-ellipse combined monopole antenna fed by a gradual coplanar waveguide, which is suitable for short-distance wide-band communication. Background technique [0002] With the rapid development of 3G, WLAN, UWB and other wireless communication technologies, the channel capacity of the system continues to increase, and the information transmission rate continues to increase. It is required that the antenna in the wireless communication system must have broadband characteristics. Recently, some new printed monopole antennas have been disclosed at home and abroad, which not only reduces the size of the antenna but also expands the scope of application. Practice has proved that disk, square, pentagon, and hexagon monopoles all have a wide operating frequency band, but because the ground plane is perpendicular to the radiation unit, forming a non-planar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/44H01Q9/30
Inventor 欧仁侠张华磊陈洪斌祝颖鲍捷
Owner JINLIN MEDICAL COLLEGE
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