Device and method for antenna automatic identification and switching

A technology for automatic identification and switching of devices, which is used in measurement devices, radio wave measurement systems, satellite radio beacon positioning systems, etc. , Avoid manual setting and switching of internal and external antenna signals and power supplies, and improve the effect of convenience

Active Publication Date: 2016-04-13
CHENGDU GUOXING COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The traditional way of using the external antenna of the portable navigation device is: connect the external antenna in the off state, and manually set the external antenna when the power is turned on. This method is complicated to operate, does not support hot-swappable connection, and is inconvenient to use

Method used

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  • Device and method for antenna automatic identification and switching
  • Device and method for antenna automatic identification and switching
  • Device and method for antenna automatic identification and switching

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Embodiment Construction

[0022] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0023] The invention relates to a device and method for automatically identifying and switching antennas, which are designed using satellite navigation or communication receivers. The receiver has multiple receiving antenna units, such as portable handheld devices, which generally include built-in antennas and external antennas. When used in open areas, built-in antennas are generally used, but when used in vehicles or other relatively closed environments, external antennas are required. After the external antenna is connected to the receiver, it will automatically switch to the external antenna, and the internal antenna will be disconnected.

[0024] Such as figure 1 As shown, an antenna automatic recognition switching device and method, ...

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Abstract

The invention discloses a device and a method for antenna automatic identification and switching. The device comprises a power switch module, a radio frequency switch module, and a current detection module. The signal input of the radio frequency switch module is connected with an internal antenna and an external antenna. The signal output of the radio frequency switch module is connected with a receiving machine. The channel control input of the radio frequency switch module is connected with the channel control output of the current detection module. The power control input of the power switch module is connected with the power control output of the current detection module. The current detection module is also connected with the external antenna. The power output of the power switch module is connected with the internal antenna. Through detecting the operating current of the external antenna, the device automatically identifies whether the external antenna is connected or not, and channel control and power control signals are generated to automatically switch to a radio frequency switch access and an internal antenna power supply, preventing manual setting and switching of internal and external antenna signals and power supplies. The device supports external antenna hot plugging, and improves convenience for using a satellite navigation receiver external antenna.

Description

technical field [0001] The invention relates to the field of identifying and switching between an external antenna and a built-in antenna, in particular to a circuit for automatically identifying and switching between an external antenna and a built-in antenna. Background technique [0002] With the development of Beidou satellite navigation system and GPS applications, satellite navigation equipment has been widely used in various fields. In order to meet the needs of satellite navigation equipment in vehicle applications or relatively closed environments, portable satellite navigation equipment is equipped with built-in and external antennas, and the key to the use of external antennas is how to realize the automatic identification and switching of internal antennas and external antennas. [0003] The traditional way to use the external antenna of the portable navigation device is: connect the external antenna when the device is turned off, and manually set the external an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/13
Inventor 刘洪利
Owner CHENGDU GUOXING COMM
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