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Wideband antenna

A broadband antenna and feeding technology, which is applied to antennas, resonant antennas, and feed at the end of slender active units, etc., can solve the problems of maintaining stable radiation direction, reducing the size of the antenna, and not meeting ultra-wide bandwidth requirements, etc. Achieve the effect of stable operation, firm structure and wide impedance bandwidth

Inactive Publication Date: 2011-08-31
CITY UNIVERSITY OF HONG KONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the antenna itself still has drawbacks:
The E-shaped chip antenna made by the folding principle or adding grounding posts on the chip antenna to reduce the size of the antenna, although the former can get a wide impedance bandwidth, but the radiation direction cannot be kept stable in the working frequency band, while the impedance bandwidth of the latter Only 27.1% do not meet the ultra-wide bandwidth requirements covering multiple wireless communications in one

Method used

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Embodiment Construction

[0031] The specific embodiment of the invention is a miniature antenna with broadband vertically polarized non-directional radiation. This antenna is mainly composed of three parts: feeding part, overlapping part and inverted folding part. Refer to the following image 3 and Figure 4 Specific embodiments of the invention are described, in which image 3 is a schematic front view of an antenna according to a specific embodiment of the present invention, Figure 4 is a three-dimensional structure diagram of an antenna according to a specific embodiment of the present invention.

[0032] The specific composition and connection structure of the antenna are:

[0033] (1) The feeding part, such as image 3 As shown, it includes an SMA connector 1, a grounding plate 2, a vertical probe 3 and a square metal sheet 4, wherein the lower end of the vertical probe 3 is connected to the SMA connector 1 in the middle of the grounding plate 2, and the upper end of the vertical probe 3 i...

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Abstract

The invention provides a wide band antenna, comprising a feeding part and an overlap part, wherein, the feeding part comprises a grounding plate, a SMA adaptor, a vertical probe and a sheet metal; the invention is characterized in that the wide band antenna further comprises a reverse folding part, wherein, the reverse folding part is upward vertical to and connected with the edge of the overlap part. The invention has the advantages of small body type, compact and tight structure, relatively wide impedance bandwidth and stable operation, and is applied to moving articles, particularly cars.

Description

technical field [0001] The invention relates to a broadband antenna, in particular to a miniature broadband antenna, which is suitable for moving objects, especially vehicles, such as automobiles. Background technique [0002] With the rapid development of mobile communication technology today, various communication services emerge in an endless stream. Users often hope to integrate various communication systems. For example, when driving a car, users need to use multiple communication services at the same time, including mobile communication 2G, 3G, Wireless LAN (Wireless LAN), Bluetooth (Blue Tooth), ZigBee and Worldwide Interoperability for Microwave Access (WiMAX) and so on. Therefore, the operating frequency band of the antenna needs to be very wide in order to cover the frequency bands of these communication services to meet market demands. Since the antenna is used in mobile vehicles, it usually radiates non-directionally to better receive signals anytime and anywher...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q9/30H01Q15/24
Inventor 容启宁刘沛儿黄衡
Owner CITY UNIVERSITY OF HONG KONG