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Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network

A wireless local area network and mobile terminal technology, applied in the direction of antennas, slot antennas, antenna arrays, etc., can solve problems such as unfavorable antennas, complex feeding structures, insertion loss, etc., and achieve the effects of flexible design, easy integration, and compact structure

Inactive Publication Date: 2010-04-21
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently developed dual-polarization antennas usually use two radiating elements to generate dual polarization, resulting in a single antenna that is not compact enough; in order to improve the isolation between dual polarizations, two feeding methods or structures are usually used to separately excite Dual polarization, or the technology of introducing air bridges, etc., will cause the complexity of the feed structure and introduce insertion loss, which is not conducive to the miniaturization design of the antenna

Method used

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  • Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network
  • Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network
  • Dual-polarized built-in slot antenna used for mobile terminal of wireless local area network

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Embodiment Construction

[0027] The present invention provides a built-in dual polarization slot antenna for a wireless local area network terminal, and the specific implementation scheme includes:

[0028] A printed circuit board;

[0029] Slotted metal ground, printed on the front side of the printed circuit board, the metal ground is engraved with a rectangular groove, the rectangular groove is connected to the inner conductor of the coplanar waveguide feeder 2, and the grooved metal ground itself is used as the coplanar waveguide feeder outer conductor;

[0030] The coplanar waveguide feeder 2 is printed on the front of the printed circuit board, the inner conductor is inserted into the corresponding rectangular slot, and the outer conductor is the metal ground;

[0031] Microstrip feeder 3, printed on the back of the printed circuit board, coupled with the coplanar waveguide feeder 2;

[0032] like Figure 1-Figure 3 As shown, the antenna system includes a slotted metal ground 1 , a coplanar w...

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Abstract

The invention discloses a dual-polarized built-in slot antenna used for a mobile terminal of a wireless local area network, which belongs to the field of antenna design and is characterized in that: a coplanar waveguide feed structure on the facade of a printed circuit board can simultaneously support an odd symmetric feed mode and an even symmetric feed mode to excite a horizontal polarization mode and a vertical polarization mode of the slot antenna inside the facade metal of the printed circuit board respectively so as to realize two orthogonal polarization modes in the same radiation unit, and meanwhile is excited by two orthogonal transmission modes of the same feed structure. The dual-polarized internal slot antenna has the advantages of miniaturization, broad band, compact structure and high isolation, and is suitable for the antenna of a multi-input multi-output system of a miniaturized mobile terminal on behalf of wireless local area network services.

Description

technical field [0001] The invention relates to a dual-polarization built-in slot antenna design for a mobile terminal of a wireless local area network, especially for a terminal of a multi-input multi-output system, and belongs to the field of antenna design of wireless communication technology. Background technique [0002] Since the 1990s, wireless communication technology has developed rapidly, and the types of wireless communication services have grown rapidly. The first-generation mobile communication system more than 20 years ago was an analog system with a low data transmission rate. It only supported wireless voice services and did not support wireless data services; when the second-generation mobile communication technology became dominant, the data transmission rate increased. On the basis of supporting voice services, low-speed data services are added, and the transmission speed of the GSM mobile communication network can reach 9.6K / s. At present, the third-gene...

Claims

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Application Information

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IPC IPC(8): H01Q13/08H01Q13/10H01Q21/00H01Q1/22
Inventor 李越张志军陈文华冯正和
Owner TSINGHUA UNIV
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