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Multi-frequency band mobile phone

A multi-band, mobile phone technology, applied in the field of multi-band mobile phones, can solve the problem that the working frequency band cannot meet the needs of users, and achieve the effect of simple structure

Active Publication Date: 2013-10-02
SUZHOU XINENG ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it is necessary to provide a multi-band mobile phone to solve the technical problem that the working frequency band supported by the mobile phone antenna in the prior art cannot meet the needs of users

Method used

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Embodiment Construction

[0020] See Figure 1 to Figure 3 , figure 1 is a structural diagram of a multi-band mobile phone according to the first embodiment of the present invention. Such as figure 1 As shown, the multi-band mobile phone of the present invention includes: PIFA antenna 101, capacitive unit 102, control chip 103, diode 104 and ground plane 105 of the printed circuit board. The control chip 103 controls the coupling state of the capacitive unit 102 and the PIFA antenna 101 to change the resonant frequency of the PIFA antenna 101 .

[0021] In this embodiment, the PIFA antenna 101 includes an antenna main body 106 and a ground terminal 107 and a feed terminal 108 connected to the antenna main body 106 . The capacitive unit 102 is disposed between the antenna body 106 and the ground plane 105 . Specifically, the antenna body 106 includes a first frequency band branch 109 and a second frequency band branch 110 . The capacitive unit 102 includes a first capacitive unit 111 and a second c...

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Abstract

The invention discloses a multi-frequency band mobile phone, which comprises a PIFA (planar inverted-F antenna), a capacitive unit and a control chip, wherein the control chip is used for controlling the coupling state between the capacitive unit and the PIFA and further changing the resonance frequency of the PIFA. By adopting the way, the mobile phone can meet the multi-frequency band working requirement of the mobile phone by controlling the coupling state between the capacitive unit and the PIFA, and has the advantages of having a simple structure, a low cost, a space-saving property and the like.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a multi-band mobile phone. Background technique [0002] Mobile phones usually use PIFA antennas (planar inverted F antennas) to receive or transmit radio frequency signals. The radio frequency signal of the mobile phone includes many frequency bands, for example, GSM850, GSM900, DCS1800 and PCS1900. [0003] Users expect mobile phones to work in as many frequency bands as possible, that is, corresponding multi-band antennas are required to cover these frequency bands. The PIFA antenna in the prior art is designed as a dual-band antenna, and its working frequency bands are GSM900 and PCS1900, but it still cannot meet the needs of users with multiple frequency bands. Therefore, designing multiple antennas in the mobile phone to satisfy the multi-band operation takes up a lot of space in the mobile phone. [0004] Therefore, it is necessary to provide a multi-band mobile phon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/38H04M1/02H04B1/44
Inventor 张莲
Owner SUZHOU XINENG ENVIRONMENTAL SCI & TECH CO LTD
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