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Impedance matching device and method of mobile communication device

A mobile communication device, impedance matching technology, applied in impedance matching network, measuring device, measuring resistance/reactance/impedance, etc., can solve the problems that the antenna radiation performance cannot be improved and cannot be adjusted dynamically

Inactive Publication Date: 2012-05-02
HTC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impedance value of the traditional impedance matching circuit is fixed and cannot be adjusted dynamically. When the user picks up the mobile phone, the reduced antenna radiation performance still cannot be improved.

Method used

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  • Impedance matching device and method of mobile communication device
  • Impedance matching device and method of mobile communication device
  • Impedance matching device and method of mobile communication device

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Embodiment Construction

[0025] figure 1 A partial circuit of a mobile communication device 100 according to an embodiment of the present invention is shown. The mobile communication device 100 includes an antenna 130, a radio frequency circuit 140, and the impedance matching device 120 of this embodiment. The mobile communication device 100 may be a mobile phone or a portable electronic device such as a personal digital assistant (PDA). The impedance matching device 120 includes electrodes 121 , 122 , a resistance measuring device 123 , a controller 124 , and an adjustable matching circuit 125 . The resistance measuring device 123 is coupled to the electrodes 121 and 122 . The adjustable matching circuit 125 is coupled between the antenna 130 and the radio frequency circuit 140 of the mobile communication device 100 . The controller 124 is coupled between the resistance measuring device 123 and the adjustable matching circuit 125 .

[0026] The electrodes 121 and 122 are disposed on the casing of ...

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PUM

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Abstract

The invention provides an impedance matching device and method of a mobile communication device. The impedance matching device of the mobile communication device comprises two electrodes, a resistance measurer, an adjustable matching circuit and a controller. The two electrodes are made of conductive material and configured on the shell of the mobile communication device; the resistance measurer is coupled with the two electrodes and used for measuring the resistance value between the two electrodes; the adjustable matching circuit is coupled between the antenna of the mobile communication device and a radio frequency circuit and comprises at least one adjustable impedance element; and the controller is coupled between the resistance measurer and the adjustable matching circuit and is used for adjusting the impedance value of the adjustable impedance element according to the resistance value, so that the impedance value of the antenna is matched with the impedance of the radio frequency circuit.

Description

technical field [0001] The present invention relates to an impedance matching (impedance matching) device and method of a mobile communication device, in particular to an impedance matching device and method with adjustable impedance (impedance). Background technique [0002] Early mobile phone antennas were arranged on the casing, which not only spoiled the appearance, but once the user's hand touched the antenna, it would have a great impact on the impedance matching between the antenna and the radio frequency circuit (radio frequency circuit), which would reduce the radiation performance of the antenna (over- the-air performance). For the sake of aesthetics and performance, current mobile phones have the antenna inside the housing, but even so, when the user holds the mobile phone, the impedance matching will be affected due to the covering of the antenna by the palm of the user, thereby reducing the radiation performance of the antenna. [0003] Aiming at this problem, ...

Claims

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Application Information

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IPC IPC(8): H03H11/28G01R27/02
Inventor 何建廷赖柊棋苏志钦陈万明
Owner HTC CORP
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