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Multi-band antenna

一种多频带天线、天线的技术，应用在天线、谐振天线、电气短天线等方向，能够解决宽带天线增加、天线设计复杂等问题，达到紧凑成本、低成本的效果

Inactive Publication Date: 2015-12-02
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, depending on the frequency bandwidth of interest, the design of this type of antenna can be very complex and can result in a solution that is a compromise between size and performance (return loss, gain, efficiency, etc.)
Also, wideband antennas can increase EMI issues due to their wideband gain

Method used

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Examples

Experimental program
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Embodiment Construction

[0054] The examples presented herein show preferred embodiments of the present invention, and these examples are not to be construed as limiting the scope of the present invention in any way.

[0055] In some embodiments of the present invention, a multi-band antenna including multiple antennas (such as PIFA) is provided. figure 2 An exemplary design of a single PIFA is shown.

[0056] in figure 2 In the specific embodiment, the PIFA antenna is printed on a substrate with two conductive metal layers: a top layer (indicated by hatching), on which the feed element F, the radiating element R, and the ground loop element GR are printed ; And the bottom layer, on which is printed a ground part or ground plane G.

[0057] The radiating element R basically consists of rectangular wires. It can also be detoured to shorten its length. The length L0 of this element is roughly equal to a quarter of the wavelength of the center frequency of the antenna's target bandwidth.

[0058] One end of t...

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PUM

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Abstract

The present invention relates to multi-band antenna. This antenna comprises a substrate and first and a second conductive layer. According to the invention, each one of the first and second conductive layers comprises a PIFA resonating in specific frequency band. The PIFAs are cascaded in order to achieve a compact antenna. The first PIFA comprises a first radiating element (30), a first feed element (31) connected to said first radiating element and a first ground return element (32) and the second PIFA comprises a second radiating element (20), a second feed element (21) connected to said second radiating element and a second ground return element (22). The ground plane (10) is printed in the same layer than the second PIFA.

Description

Technical field [0001] The present invention generally relates to multi-band antennas used in wireless communication systems, such as home network devices or mobile devices. Background technique [0002] Home network devices, such as gateways and set-top boxes, need to be compatible with more and more wireless standards. These standards are, for example: WLAN (Wireless Local Area Network) operating in the 2.4GHz and 5GHz bands, Bluetooth and RF4CE (Radio Frequency for Consumer Electronics) operating in the 2.4G frequency band, and DECT (Digital Evolution Cordless Telecommunications) operating in the 1900MHz frequency band. , And LTE (Long Term Evolution) running in UHL and L bands. [0003] The need for equipment to be compatible with multiple wireless standards increases the number of antennas required and therefore increases equipment cost. The demand for MIMO systems has also increased the number of antennas. For an n-order MIMO system, n antennas are required. In addition, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/22H01Q5/00H01Q9/04H01Q9/42H01Q21/30
CPCH01Q1/2291H01Q5/40H01Q9/0421H01Q9/42H01Q21/30H01Q1/48
Inventor 多米尼克·罗·兴·通菲利普·米纳德让-卢克·罗伯特
Owner THOMSON LICENSING SA