Left-handed circularly polarized antenna
A left-handed circular polarization and antenna technology, which is applied to the connection of the antenna, the antenna grounding switch structure, and the device that enables the antenna to work in different bands at the same time, can solve the problems affecting soil moisture, the detection sensitivity of moving targets, etc., and achieves high gain, The effect of low VSWR and wide working bandwidth
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no. 1 example
[0057] The overall dimensions of the parasitic patch 2 are larger than the resonant patch 5 .
no. 2 example
[0059] Such as Figure 4 As shown, the width of the second microstrip line 62 is narrower than that of the first microstrip line 61, and the third microstrip line 63 is composed of two parts with different widths, the wide part is connected with the first microstrip line 61, and the width is the same as that of the second microstrip line. The width of the microstrip line 62 is the same, the width of the fourth microstrip line 64 is the same as the width of the narrow part of the third microstrip line 63, the width of the fifth microstrip line 65 is the same as the width of the second microstrip line 62, The sixth microstrip line 66 is made up of two parts with different widths and is L-shaped. The length of the narrow part is greater than that of the wide part. The width of the wide part is the same as that of the second microstrip line 62. The narrow part of the three microstrip lines 63 is the same, the wide part is connected to the fourth microstrip line 64 , and the width ...
no. 3 example
[0061] A low noise amplifier is provided on the upper surface of the lower microstrip board 4 , and the low noise amplifier is located outside the outer straight line of the seventh microstrip line 67 and connected to the outer straight line.
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