Double frequency mono-polar antenna

A monopole antenna and transmission line technology, applied to antennas, devices that enable antennas to work in different bands at the same time, electrical components, etc., can solve problems such as limited practical value, high-frequency signal transmission distance and signal quality, and large volume.

Inactive Publication Date: 2006-07-12
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the wireless system, the antenna design is a very critical part. Currently, the communication products suitable for the wireless area network mostly adopt the monopole antenna design with long straight conductors; since these antennas are designed for dual-band operation When the structure is complex and the volume is large, so the practical value is limited
Furthermore, such antenna designs usually require an external matching circuit to achieve a good match, making the production cost higher
[0003] On the other hand, since higher frequency wireless signals (such as 5.2GHz) are easily attenuated by environmental factors such as terrain and objects when propagating, the transmission distance and signal quality of high frequency signals will be greatly affected

Method used

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Embodiment Construction

[0027] Please refer to figure 1 , which is a schematic diagram of a dual-band monopole antenna provided according to a preferred embodiment of the present invention. The dual-frequency monopole antenna 11 can be fabricated using the microwave substrate 10, wherein the radiating element 100 can be formed on the surface of the microwave substrate 10 by etching or printing techniques to generate two different resonance modes, so that the antenna can operate in two different frequencies. In terms of signal transmission, if a microstrip line (microstrip line) is used as the transmission line (transmission line) during design, the microstrip line 150 connected to the radiation element 100 can be arranged on the front side of the microwave substrate 10, and the backside of the microwave substrate 10 A ground plane Gnd corresponding to the microstrip line 150 is provided. Of course, other types of transmission lines can also be used to connect to the radiating element 100 to transmi...

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Abstract

A two-frequency one pole antenna includes a microwave base plate, radiation elements and transmission line among which, the radiation elements are composed of a central radiator and several radiation arms, the central radiator generates a resonant modal, the arms generate another resonant modal, thus the said antenna can operate on two different frequencies In actual practice, every radiation arm can be set symmetrically and leaking two corresponding sidewalls of the radiator and electromagnetic coupling efficiency between the arms and the radiator makes the impedance good matching.

Description

technical field [0001] The present invention relates to a dual-frequency antenna, and in particular to a dual-frequency monopole antenna. Background technique [0002] In recent years, with the vigorous development of the communication industry, various wireless products have sprung up like mushrooms after rain. Take the currently extremely popular wireless local area network (WLAN) as an example, its related products have a very high market value and have attracted wide attention in the industry. In the wireless system, the antenna design is a very critical part. Currently, the communication products suitable for the wireless area network mostly adopt the monopole antenna design with long straight conductors; since these antennas are designed for dual-band operation When the structure is complex and the volume is large, so the practical value is limited. Furthermore, such antenna designs generally require an external matching circuit to achieve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q13/08H01Q5/00
Inventor 方士庭董浩钧翁金辂
Owner IND TECH RES INST
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