Mobile terminal and GPS antenna of mobile terminal
A technology for GPS antennas and mobile terminals, applied in the field of GPS antennas, can solve problems such as energy loss of received signals
Inactive Publication Date: 2016-08-17
LEMOBILE INFORMATION TECH BEIJING
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Problems solved by technology
[0004] However, since the signal transmitted by the GPS satellite is a right-handed circularly polarized wave, and the antenna of the mobile terminal is a linearly polarized antenna, the inconsistency of the polarization will cause the energy loss (about 3dB) of the received signal. Therefore, it is necessary to further improve the antenna Efficiency to reduce energy loss due to polarization inconsistency
At the same time, for mobile terminals, the trend of popular metal casings also brings severe challenges to antenna design
Method used
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[0032] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order to avoid obscuring the essence of the present invention, well-known methods, procedures, and flow charts are not described in detail. Additionally, the drawings are not necessarily drawn to scale.
[0033] In the following preferred embodiments, a mobile phone is taken as an example to describe the embodiments of the present invention. Those skilled in the art can understand that the designs of the embodiments of the present invention are also applicable to other mobile terminals. figure 1 , figure 2 It is a schematic diagram of the outer surface and the inner surface of the mobile phone rear case of the embodiment o...
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An embodiment of the invention provides a mobile terminal. The mobile terminal comprises a GPS antenna, a back shell and a main board, wherein the GPS antenna comprises a radiation metal layer and a grounding metal layer arranged on the surface of the back shell; the radiation metal layer and the grounding metal layer are isolated through an insulating material; the main board is provided with a feeder line and a ground wire; the radiation metal layer is provided with a feed part; the feed part is connected with the feeder line on the main board; the feed part is taken as the radiator of the GPS antenna; the grounding metal layer is provided with a grounding part; the grounding part is connected with the ground wire on the main board; and the grounding part is taken as the grounding part of the GPS antenna, wherein the grounding part is connected with the ground wire on the main board through multiple contacts. By adoption of the multi-contact grounding way, the grounding current distribution of the GPS antenna of the mobile terminal is changed, the carrier-to-noise ratio of the GPS signal is lowered, and the sensitivity of the GPS antenna of the mobile terminal is improved.
Description
technical field [0001] The invention relates to the technical field of antennas, in particular to a mobile terminal and a GPS antenna of the mobile terminal. Background technique [0002] Global Positioning System (Global Positioning System, GPS) is a new generation of satellite navigation and positioning system developed by the U.S. Department of Defense for the land, sea and air forces. It is widely used in various fields such as navigation, surveying and mapping, monitoring, timing and communication. In recent years, GPS has developed rapidly in the civilian field, especially in navigation and positioning with great potential. In order to meet the requirements of GPS applications, the GPS antenna is one of the key issues that must be solved. [0003] Traditional mobile terminals (such as mobile phones) have built-in GPS antennas. Although the positioning time, accuracy and response speed are not ideal, the technology is relatively mature. Generally, a clearance interval...
Claims
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IPC IPC(8): H01Q1/24H01Q1/50
CPCH01Q1/243H01Q1/50H01Q1/22H01Q1/24
Inventor 李彪
Owner LEMOBILE INFORMATION TECH BEIJING