Directional Digital TV Antenna

Abstract

The invention discloses a directional digital TV antenna, including: an insulation dielectric substrate, a first portion of a surface, a second part of the other surface and a metal probe, wherein the first part has a different width of three impedance transformation period, the second part of the shape for the shape, include grounding, radiation and impedance matching, a large metal nail through the first part, the second part and the insulating dielectric substrate of the hole to form a loop, the first part of the upper end of the third segment and second part of the impedance transformation, radiation and impedance matching department are the first and second clearance clearance longitudinal split, with this design achieve good directional effect, and improved the antenna gain and broadening the antenna bandwidth, more reduced the 3 db horizontal width of the beam, and improve the segregation degree, improve the existing problems of the existing digital TV antenna.

Description

technical field [0001] The invention relates to an antenna, especially a directional digital TV antenna for receiving and transmitting digital TV signals. Background technique [0002] In recent years, as digital TVs are combined with various portable electronic products, such as mobile phones, personal digital assistants (Personal Digital Assistant, PDA), notebook computers, etc., these portable electronic products are combined with miniaturized digital TVs. Antennas have become a trend. However, the effect of wireless reception / transmission of indoor digital TV signals in general households is not good, and it is still necessary to rely on traditional broadband lines. [0003] The main reason for the poor effect of wireless reception / transmission is that although the generally designed digital TV antennas can achieve miniaturization effects, they are all designed as omnidirectional antennas for mobile communication, without directivity in a specific direction, and the gai...

AI Technical Summary

Problems solved by technology

However, the effect of wireless reception / transmission of indoor digital TV signals in general households is not good, and it is still necessary to rely on traditional broadband lines

[0003] The main reason for the poor effect of wireless reception / transmission is that although the generally designed digital TV antennas can achieve miniaturization effects, they are all designed as omnidirectional antennas for mobile communication, without directivity in a specific direction, and the gain is relatively high. Low, and the mutual coupling with the receiving antenna is serious, resulting in a large 3dB beam width and low isolation. Therefore, for ordinary households, digital TV signals are easily blocked by walls or other objects, and electromagnetic waves cannot be effectively used.

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