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Elliptical double-sided dipole antenna for vehicle-mounted digital television

A dipole antenna, digital TV technology, applied in the direction of antenna, loop antenna, circuit, etc., can solve the problems of narrow working frequency band, less than ideal bandwidth, and few signal channels

Inactive Publication Date: 2011-03-02
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this antenna takes up a lot of space and the bandwidth is not ideal
[0005] At present, the wire antenna commonly used in the antenna of the vehicle-mounted digital TV system has a narrow working frequency band, and the number of signal channels that can be received is small.

Method used

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  • Elliptical double-sided dipole antenna for vehicle-mounted digital television
  • Elliptical double-sided dipole antenna for vehicle-mounted digital television
  • Elliptical double-sided dipole antenna for vehicle-mounted digital television

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with embodiments and drawings.

[0019] See figure 1 The embodiment of the present invention is provided with a double-sided copper-clad dielectric substrate 1. Both sides of the dielectric substrate are elliptical dipole units with the same structure. The elliptical dipole units consist of a large ellipse ring 2, a small ellipse ring 3, and a microstrip line. 4 and the connecting line 5 between the large oval ring 2 and the small oval ring 3.

[0020] The dielectric substrate 1 adopts an ordinary F4BK-2 double-sided copper-clad circuit substrate with a length of 210.0mm±0.1mm and a width of 40.0mm±0.1mm. The length of the large oval ring 2 is 89.0mm±0.1mm, the width is 31.0mm±0.1mm, the width of the ring is 4.0mm±0.1mm, the length of the small oval ring 3 is 55.0mm±0.1mm, and the width is 15.0mm±0.1mm. The width of the ring is 2.0 mm ± 0.1 mm, and the connecting line 5 between the large oval ring and the ...

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Abstract

The invention relates to an elliptical double-sided dipole antenna for a vehicle-mounted digital television, in particular to a dipole antenna. The elliptical double-sided dipole antenna for the vehicle-mounted digital television has the characteristics of small size, large bandwidth, lower return loss, high gain, high radiation efficiency, simple structure and omnidirectional radiation and is provided with a double-sided copper-applying medium substrate and two symmetrical and same elliptical dipole radiation units, wherein the elliptical dipole radiation units are respectively etched on both sides of the double-sided copper-applying medium substrate; each element of a dipole adopts a big and a small elliptical rings; the small elliptical ring is placed in the middle of the big elliptical ring; the big and the small elliptical rings are connected through an extended line of a feeder line; the extended line is a micro-strip line; and the micro-strip line is formed by a pair of symmetrical rectangular micro-strip lines.

Description

Technical field [0001] The invention relates to a dipole antenna, in particular to an elliptical double-sided dipole antenna used for vehicle-mounted digital television. Background technique [0002] At present, with the rapid development of wireless mobile communication technology, in-vehicle digital TV technology is gradually established and developed, and has gradually received widespread attention from the domestic and foreign industries. As a brand-new mass media, the in-vehicle digital TV technology is mainly through wireless transmission. It can be widely used in various public places such as buses, taxis, subway stations, trains and airports. The DVB organization (Digital Video Broadcasting Industry Organization) published the DVB-H standard specifically for the transmission system for receiving digital TV on the move. This standard not only overcomes the limitations and power consumption of the previous DVB-T standard for receiving terrestrial digital TV on the move It ...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q7/00H01Q13/08
Inventor 李伟文蔡立绍游佰强周建华彭丹严新金
Owner XIAMEN UNIV
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