Signal transmission method and device, circuit, terminal and antenna unit

A signal transmission and antenna unit technology, which is applied in the field of satellite navigation, can solve problems such as inaccurate positioning results, loss of satellite signals, and weak satellite signals, and achieve the effects of improving positioning accuracy, improving receiving sensitivity, and saving power consumption

Active Publication Date: 2020-01-17
ZTE CORP
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] At present, the receiving module of the satellite navigation system in the mobile terminal all adopts a fixed receiving path, and the receiving sensitivity (signal-to-noise ratio) of the fixed receiving path is fixed no matter what the environment is, so for places where the signal is relatively good, For example, in an open and flat place, the satellite navigation and positioning function of the mobile terminal is accurate. In the environment, the satellite signal received by the mobile terminal is weak, and even the satellite signal may be lost, resulting in inaccurate positioning results

Method used

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  • Signal transmission method and device, circuit, terminal and antenna unit
  • Signal transmission method and device, circuit, terminal and antenna unit
  • Signal transmission method and device, circuit, terminal and antenna unit

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Embodiment Construction

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the specific technical solutions of the invention will be further described in detail below in conjunction with the drawings in the embodiments of the present invention. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] Satellite navigation and positioning technology is a commonly used positioning technology. It has the advantages of all-weather, wide coverage, three-dimensional constant speed and high precision, and short positioning time. Therefore, mobile terminals usually have satellite signal receiving channels. figure 1 It is a schematic diagram of the composition of a radio frequency front-end circuit known at present, such as figure 1 As shown, the RF front-end circuit includes a satellite receiving path and a communication receiving path, wherein the...

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Abstract

The embodiment of the invention discloses a signal transmission method and device, a circuit, a terminal and an antenna unit. The signal transmission method comprises the following steps: receiving aradio frequency signal; and when it is determined that the radio frequency signal is less than a set threshold, switching a receiving path of the radio frequency signal from a first circuit with fixedbandwidth and gain to a second circuit with adjustable bandwidth and / or gain. According to the signal transmission method, the bandwidth and gain of the receiving path of the radio frequency signal are automatically adjusted according to the size of the current radio frequency signal, so that the receiving sensitivity can be improved, the continuity of the signal is maintained, and the positioning accuracy of the mobile terminal in a severe environment is improved.

Description

technical field [0001] The invention relates to satellite navigation technology, in particular to a signal transmission method and device, a radio frequency signal processing circuit, a terminal and an antenna unit. Background technique [0002] In today's society, the functions of mobile terminals are increasingly rich, including not only traditional communication functions, but also multimedia functions and satellite navigation and positioning functions. In particular, the satellite navigation and positioning function is a function that people rely on in their daily travel. [0003] At present, the receiving module of the satellite navigation system in the mobile terminal all adopts a fixed receiving path, and the receiving sensitivity (signal-to-noise ratio) of the fixed receiving path is fixed no matter what the environment is, so for places where the signal is relatively good, For example, in an open and flat place, the satellite navigation and positioning function of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B1/16H04B7/185
CPCH04B7/0814H04B7/0825H04B1/1638H04B7/18517
Inventor 柳凯
Owner ZTE CORP
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