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Loop and inverted-F-shaped reconfigurable cell phone built-in antenna

A technology for built-in antennas and loop antennas, applied in antennas, foldable/retractable loop antennas, antenna supports/mounting devices, etc., to 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

AI Technical Summary

Problems solved by technology

In addition, it is more difficult to integrate other more frequency bands on the mobile phone antenna

Method used

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  • Loop and inverted-F-shaped reconfigurable cell phone built-in antenna
  • Loop and inverted-F-shaped reconfigurable cell phone built-in antenna
  • Loop and inverted-F-shaped reconfigurable cell phone built-in antenna

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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 ring-inverted F type reconfigurable mobile phone built-in antenna according to the present invention, which includes a metal conductor part, a PIN diode 5 and a DC blocking capacitor 6, and the metal conductor part includes an antenna main body 1, a feeding branch 2, Short-circuit the branch 3 and the frequency-modulating metal sheet 4, the planar structure of the antenna main body 1 is an I-shaped loop antenna, and the frequency-modulating metal sheet 4 is connected to the outside of the first horizontal side 1a of the I-shaped loop antenna, and the first horizontal side 1a passes through the PIN diode 5 connection; the feeding stub 2 and the short-circuiting stub 3 are connected to the outside of the fourth transverse side 1d of the I-shaped loop antenna, and the fourth transverse si...

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Abstract

A loop and inverted-F-shaped reconfigurable cell phone built-in antenna belongs to the field of antenna design and comprises a metal conductor portion, a pin diode and a stopping condenser. The metal conductor portion comprises a folded loop antenna main body, a frequency modulation metal sheet, a feeding branch and a short circuit branch. The antenna main body is disconnected at the positions ofthe pin diode and the stopping condenser and is connected into a whole through the pin diode and the stopping condenser. The antenna has two working states of a loop antenna and an inverted-F-shaped antenna and is controlled by the pin diode. When a switch is turned on, the antenna works in a loop antenna mode, and when the switch is turned off, the antenna works in the inverted-F-shaped antenna mode. The loop and inverted-F-shaped reconfigurable cell phone built-in antenna has the advantages of miniaturization, broad band, multiband and easiness in integration, and is suitable for design forbuilt-in antennas of various small mobile terminals represented by the cell phones.

Description

technical field [0001] The invention belongs to the antenna design field of wireless communication technology, and relates to a ring-inverted F type reconfigurable built-in antenna for a mobile phone. Background technique [0002] As one of the most important personal wireless mobile communication terminals, the mobile phone has developed rapidly in the 1990s and the beginning of this century, and has become a part of people's life and plays a very important role. With the development of mobile communication technology, the mobile phone business has also achieved a leap from voice communication, to data communication, to network and multimedia communication. The functions of mobile phones are not limited to phone calls and SMS services, and many emerging high-speed data services are also applied on mobile phones. The integration of multiple services on small mobile terminals represented by mobile phones is a hot spot for mobile operators. [0003] The antenna is an essentia...

Claims

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Application Information

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IPC IPC(8): H01Q7/02H01Q1/36H01Q5/00H01Q1/24H01Q5/10H01Q5/28H01Q5/307H01Q5/321
Inventor 李越张志军郑剑峰冯正和
Owner TSINGHUA UNIV
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