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Planar type wideband lpda antenna applied to vhf/uhf channel

A dipole and antenna technology, applied in the field of planar broadband LPDA antennas, can solve the problems of affecting antenna performance and unsatisfactory output.

Inactive Publication Date: 2004-01-14
株式会社麦克斯维夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Despite such preferences, it is not easy to arbitrarily change the shape of the antenna because the shape of the antenna greatly affects the performance of the antenna
[0005] Also, conventional antennas have unsatisfactory output of 3dB or less

Method used

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  • Planar type wideband lpda antenna applied to vhf/uhf channel
  • Planar type wideband lpda antenna applied to vhf/uhf channel
  • Planar type wideband lpda antenna applied to vhf/uhf channel

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Embodiment Construction

[0026] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

[0027] figure 1 and figure 2 The case where the planar wideband LPDA antenna suitable for VHF / UHF channels of the present invention is used for a personal computer and a television receiver, respectively, is shown. Particularly, image 3 The structure and connection state of the antenna according to the present invention are shown.

[0028] refer to figure 1 , the mainframe 20 of the personal computer is placed on the table, and is connected with the monitor 10 and the mouse 30 . The planar broadband antenna 100 suitable for VHF / UHF channels of the present invention is made in the shape of a mouse pad.

[0029] The antenna 100 is connected to a host 20 of a personal computer via a cable 150 . exist figure 1 In , reference numeral 108 denotes a radome for protecting a feed point at which the antenna 100 and the cable 150 are ...

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PUM

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Abstract

A planar type wideband LPDA antenna has an UHF band of 470 MHz to 752 MHz and comprises: a nonconductive substrate board having a low dielectric and a small loss of an electromagnetic wave; and an antenna pattern arranged on the nonconductive substrate board and having a feed point for the supply of an electric power, the feed point being connected to a TV receiver module, the antenna pattern including an UHF dipole for an UHF band and a VHF dipole for a VHF band, the UHF dipole comprising a first dipole which is the longest dipole among the UHF dipoles and the VHF dipole comprising a second dipole for a high VHF channel, the second dipole being perpendicularly connected to one end of the first dipole.

Description

technical field [0001] The present invention relates to television receiver antennas, in particular to planar broadband LPDA (logarithmic periodic dipole array) antennas suitable for VHF (Very High Frequency) / UHF (Ultra High Frequency) channels, which are compatible with television receivers or computers The TV receiving card is connected to receive TV broadcast signals, and has a small-sized flat shape. Background technique [0002] Generally, the antenna is connected to the indoor TV receiver or the TV receiving card of the computer. V-shaped antennas are suitable for VHF bands, while parabolic or loop antennas are suitable for UHF bands. [0003] However, these antennas take up space and are oddly shaped. Therefore, it is out of harmony with the surrounding environment. Sometimes, people feel that these antennas affect the aesthetics. [0004] Also, where viewers watch television broadcasts via personal computers, but do not wish to leak such viewing to the public, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q11/10H01Q21/28H01Q21/30
CPCH01Q21/28H01Q11/105H01Q1/38H01Q11/10H01Q21/30
Inventor 安东植
Owner 株式会社麦克斯维夫
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