Positioning antenna for portable terminal and portable terminal thereof

A technology for positioning antennas and portable terminals, applied to antennas, resonant antennas, antenna supports/mounting devices, etc., to reduce impact and save space
CN101572339BActive Publication Date: 2013-03-27LENOVO (BEIJING) LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LENOVO (BEIJING) LTD
Publication Date
2013-03-27

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Abstract

The invention provides a positioning antenna for a portable terminal and the portable terminal thereof. The positioning antenna comprises a frequency selective surface and a microstrip antenna main body, wherein the frequency selective surface is provided with first resonant frequency and second resonant frequency; and the microstrip antenna main body is arranged below the frequency selective surface and provided with first characteristic information corresponding to the antenna directivity of the first resonant frequency and second characteristic information corresponding to the antenna directivity of the second resonant frequency. The invention solves the technical problem that the positioning can only be realized under certain fixed attitude in the prior art. The antenna has a restructurable directional diagram, not only can form high directional gain but also can be restructured into omnidirectional gain, and can be effectively positioned under any satellite attitude.
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Description

technical field

[0001] The invention relates to the terminal antenna technology of a positioning system, in particular to a positioning antenna for a portable terminal and the portable terminal. Background technique

[0002] Popularizing the global positioning system on notebook computers is a future market trend, and the global positioning system has high requirements on the polarization and pattern (characteristic information of the antenna directivity) of the terminal antenna. In particular, China's own Beidou positioning system has high requirements for terminal antenna gain. Even if a high-gain (40dB) low-noise amplifier is used, the antenna gain is still greater than 4dBi. On a notebook computer, the space available to install the antenna is limited, even the "microstrip positioning antenna" is still too large: about 50mm long, 50mm wide, and 3-5mm thick, and the satellite direction must be kept on a 50mm×50mm plane It is difficult to use conveniently within the norma...

Claims

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