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Built-in loop antenna of mobile phone with reconfigurable short circuit point

A short-circuit point and built-in ring technology, which is applied in foldable/retractable loop antennas, antennas, antenna supports/mounting devices, etc., can solve problems such as antenna loss, and achieve the effect of easy integration and multi-band integration

Inactive Publication Date: 2012-03-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The introduced components will introduce some loss of antenna performance, which is equivalent to the loss of part of the performance in exchange for the number of frequency bands of the antenna

Method used

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  • Built-in loop antenna of mobile phone with reconfigurable short circuit point
  • Built-in loop antenna of mobile phone with reconfigurable short circuit point
  • Built-in loop antenna of mobile phone with reconfigurable short circuit point

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0029] Such as figure 1 As shown, it is a plan view of the mobile phone built-in loop antenna with reconfigurable short circuit point according to the present invention, the first PIN diode 6 and the second PIN diode 7, and the metal conductor part includes the antenna main body 1, the feeding branch 2, the first Short-circuit branch 3, the second short-circuit branch 4 and frequency-modulating metal sheet 5, the planar structure of antenna main body 1 is an I-shaped loop antenna, and the frequency-modulating metal sheet 5 is connected to the outside of the first horizontal side 1a of the described I-shaped loop antenna; The branch 2, the first short-circuit branch 3 and the second short-circuit branch 4 are all connected to the outside of the fourth lateral side 1d of the I-shaped loop antenna, and the position of the first short-circuit bran...

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Abstract

The invention relates to a built-in loop antenna of a mobile phone with reconfigurable short circuit point, which belongs to the field of antenna design. The built-in loop antenna comprises a metal conductor part, a first PIN (Positive Intrinsic Negative) diode, and a second PIN diode; the metal conductor part includes a folded loop antenna body, a frequency adjusting metal sheet, a feed branch, a first short circuit branch and a second short circuit branch; the two short circuit branches are grounded through corresponding PIN diodes, so that when the PIN diodes are conducted, the short circuit branches are connected with the ground, and when the PIN diodes are disconnected, the short circuit branches are not connected with the ground; the antenna works in two modes of different frequencies when the two short circuit branches are grounded respectively; and in combination with the two different working modes, the antenna can cover multiple frequency bands. The built-in loop antenna has the advantages of miniaturization, broadband, multiple frequency bands and easy integration, and is suitable for design of the built-in antennas of various small mobile terminals such as mobile phones.

Description

technical field [0001] The invention belongs to the antenna design field of wireless communication technology, and relates to a mobile phone built-in loop antenna with reconfigurable short-circuit point. Background technique [0002] With the rapid development of wireless communication technology, the functions of mobile phones have gradually expanded, from the previous single voice service to the current digital and multimedia services. Integrating multiple services on the same mobile phone is one of the important trends in the current development of mobile phones. Since the frequency bands of various wireless communication services are different, such as the Global System for Mobile Communications (GSM850: 824-894MHz, GSM900: 880-960MHz), the Global Positioning System (GPS: 1575MHz), the Digital Cellular System (DCS: 1710- 1880MHz), personal communication system (PCS: 1850-1990MHz), universal mobile communication system (UMTS: 1920-2170MHz) and Bluetooth (Bluetooth: 2.4GH...

Claims

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Application Information

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IPC IPC(8): H01Q7/02H01Q1/36H01Q5/00H01Q1/24H01Q5/28H01Q5/328
Inventor 李越张志军郑剑峰冯正和
Owner TSINGHUA UNIV
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