Automotive window glass antenna

Details Automotive window glass antenna Automotive window glass antenna

1993-01-26

1995-05-16

Hajec, Donald

Communications: radio wave antennas

Antennas

With vehicle

343704, H01Q 132

Patent

active

054164915

ABSTRACT:
An antenna is attached to a rear window glass of an automobile and arranged in a space between a defogging heater element and a lower edge of the window glass. According to an aspect of the present invention, the antenna comprises a plurality of horizontal conductive strips having the length of 0.02.lambda..multidot.f.sup.1/2 (1.+-.0.2), adjacent two of which are connected at opposite ends so as to constitute a rectangular loop. The number of the horizontal conductive strips is in the range of 2 to 4. According to another aspect of the present invention, the antenna comprises a main element having two horizontal conductive strips and a vertical strip connecting the horizontal strips at one ends located nearer to a widthwise center of the space, and an auxiliary element having a conductive strip made up of a vertical portion extending upward from upper one of the horizontal conductive strips of the main element to have an upper end and a horizontal portion extending between the upper end of the vertical portion and a feed point located at a widthwise marginal area of the space.

REFERENCES:
patent: 4260989 (1981-04-01), Ishii et al.
patent: 4439771 (1984-03-01), Kume et al.
patent: 4727377 (1988-02-01), Yotsuya et al.
patent: 5101212 (1992-03-01), Shinnai et al.
patent: 5185612 (1993-02-01), Tsukada et al.
patent: 5220336 (1993-06-01), Hirotsu et al.
patent: 5229780 (1993-07-01), Hirotsu et al.
patent: 5334989 (1994-08-01), Nagayama et al.

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