Automotive glass antenna and automotive window glass
A glass antenna and window glass technology, applied in the directions of antennas, windshields, vehicle parts, etc., can solve the problem of insufficient antenna gain, and achieve the effect of sufficient antenna gain
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example 1
[0065] right figure 1 The actual measurement results of the antenna gain of the shown glass antenna 100 will be described.
[0066] will have figure 1 The window glass G of the shown glass antenna 100 is pasted on the metal frame 5 imitating the flange of the opening of the vehicle body, and the metal frame 5 is fixed so that the window glass G is in a state of about 90° with respect to the horizontal plane. on the turntable. A connector is installed on the power supply unit 2, and it is connected to a network analyzer via a feedback line. The turntable is rotated so that the window glass G is irradiated with radio waves in all directions from the horizontal direction.
[0067]The center of the metal frame to which the window glass G was pasted was set at the center of the turntable, and the antenna gain was measured by rotating the metal frame by 360°. The data of the antenna gain is measured every 6 MHz in the range of 473 to 713 MHz of terrestrial digital television bro...
example 2
[0084] next, yes figure 2 The actual measurement results of the antenna gain of the shown glass antenna 200 will be described.
[0085] will have figure 2 The window glass G of the shown glass antenna 200 is pasted and fixed to the flange of the opening of the vehicle body of the automobile so as to be in a state of about 75° with respect to the horizontal plane. It is installed so that the vehicle center of the vehicle on which the window glass G is installed coincides with the center of the turntable, and the turntable is rotated to irradiate radio waves from all directions with respect to the window glass G from the horizontal direction. In the range of -713 MHz, the measurement is performed every 6 MHz. Other conditions are the same as Example 1.
[0086] The dimensions of each part of the glass antenna are as follows.
[0087] Conductor length of horizontal element 11: 110mm
[0088] Ground conductor 3: 215×10mm
[0089] Conductor length of element 41: 80mm
[00...
example 3
[0102] next, yes image 3 The actual measurement results of the antenna gain of the shown glass antenna 300 will be described.
[0103] exist image 3 In this method, the antenna gain was measured by changing the distance D1 between the front end a of the horizontal element 11 and the closest part of the flange end 45 by retreating the flange end 45 from the antenna conductor 1 side. image 3 The separate conductor is the flanged end 45, figure 1 The elements 41, 42, 43 are not provided. Other conditions were the same as in Example 1.
[0104] The dimensions of each part of the glass antenna are as follows.
[0105] D8, D9: 20mm
[0106] Other dimensions are the same as in Example 1.
[0107] The distance between the individual conductor and the horizontal element 11 is measured every 20 mm within the range of 10 to 150 mm. The result is as Figure 5 shown. According to the figure, it can be known that the distance between the independent conductor and the horizontal ...
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