Multiband antenna for mobile phone

A mobile phone antenna and antenna technology, which is applied in the direction of antenna, electrical components, radiation element structure, etc., can solve the problems of signal transmission and reception performance and light and small appearance, unsatisfactory effect, and increased size.

Inactive Publication Date: 2003-10-29
QUANTA COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned planar antenna 3 already has sufficient bandwidth response when it is applied to transmit and receive dual-frequency electromagnetic wave signals of 900MHz and 1800MHz. When electromagnetic wave signals are used to form a so-called tri-band mobile phone, the bandwidth response of the high-frequency planar antenna 31 of the above-mentioned antenna 3 often cannot cover 1900MHz electromagnetic wave signals, making it unsatisfactory when transmitting and receiving 1900MHz electromagnetic wave signals. The frequency planar antenna 31 uses a quarter-wavelength resonance to transmit and receive electromagnetic signals, and the bandwidth it can provide is too small to effectively produce an ideal resonance strength at 1900 MHz. ...

Method used

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  • Multiband antenna for mobile phone
  • Multiband antenna for mobile phone
  • Multiband antenna for mobile phone

Examples

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Embodiment Construction

[0011] refer to figure 2 A preferred embodiment of the multi-frequency mobile phone antenna 100 of the present invention includes a planar sensing part 1 and an extended sensing part 2 . The antenna 100 can be accommodated and positioned in a mobile phone casing and electrically connected with a circuit board (not shown) in the mobile phone casing to transmit and receive radio frequency signals.

[0012] The planar sensing part 1 has a high-frequency planar sensing region 11 and a low-frequency planar sensing region 12. In this example, the planar sensing part 11 is formed on a first flat plate 10 as circuit board material, so that the high-frequency planar sensing region 11 It has a smaller conductive area, while the low frequency planar sensing area 12 has a larger conductive area, and makes the high frequency planar sensing area 11 and the low frequency planar sensing area 12 on the first plate 10 electrically isolated from each other.

[0013] The extension sensing part ...

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Abstract

A multi-frequency antenna for mobile telephone is composed of a planar induction part consisting of the HF induction area and LF one and an extended induction part consisting of signal feed-in point,ground point and two extended circuits respectively connected with said HF and LF induction areas to form HF and LF antenna loops. Its advantages are wide bandwidth, and small size.

Description

technical field [0001] The invention relates to a multi-frequency mobile phone antenna, in particular to an antenna structure that has sufficient electromagnetic wave induction bandwidth and can maintain a small size, so as to be applied to dual-frequency or even triple-frequency mobile phone handsets. Background technique [0002] Due to the convenience of mobile phones in communication, mobile phones have become one of the necessary supplies in daily life. With the vigorous development of mobile phones, the design form of mobile phones has also been constantly refurbished and evolved to become thinner, smaller, more beautiful and multi-functional. Therefore, the antenna structure of the mobile phone has gradually adopted the planar antenna design form that can be hidden in the mobile phone case from the previous helical antenna design protruding outside the mobile phone case, so as to conform to the overall shape of the mobile phone. Lightweight and...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H01Q25/00
Inventor 蔡调兴吴建逸彭奂喆
Owner QUANTA COMPUTER INC
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