Antenna

An antenna and antenna element technology, applied to antennas, resonant antennas, antenna parts and other directions, can solve the problems of reduced antenna impedance, difficult impedance matching, inconvenient use, etc., to achieve stable antenna characteristics, reduced height, and antenna The effect of increasing impedance
CN1519985AInactive Publication Date: 2004-08-11PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2004-08-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The antenna of the present invention comprises flat-plate ground plane 1, first antenna element 13 with one end 13a connected to feeding point 2 and intermediate portion 13b folded by a plurality of times, which is extended upward from the ground plane 1, and second antenna element 23 with one end 23a connected to the other end 13c of the first antenna element 13, with intermediate portion 23b formed in symmetrical relation to the first antenna element 13, and also, with the other end 23c connected to the ground plane 1. Thus, it is possible to obtain a small size antenna with the antenna element lowered in height.
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Description

technical field

[0001] The present invention relates to an antenna used in a mobile wireless device such as a vehicle. Background technique

[0002] In recent years, linear monopole antennas or folded monopole antennas have generally been used as antennas for mobile wireless devices such as those used in vehicles.

[0003] now, use Figure 11 Such a conventional antenna will be described.

[0004] Figure 11 (a) is a side view of a conventional monopole antenna. A conventional monopole antenna is composed of a flat conductor plate 91 made of copper or the like, a feeding point 92 located in the center of the conductor plate 91 , and a linear antenna element 93 made of copper or the like. One end of the antenna element 93 is connected to the feed point 92 , while the other end extends vertically by a height h with respect to the conductor floor 91 in an open state. In this way, a monopole antenna is constructed.

[0005] Figure 11 (b) is a side view of a conventional fol...

Claims

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