Double-frequency PCB helical antenna
A helical antenna and helical technology, which is applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problem that the PCB antenna cannot work in dual-frequency mode, and achieve the advantages of increasing capacitance, improving matching, and reducing size Effect
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[0024] The present invention is further illustrated below by means of examples, but the present invention is not limited to the scope of the examples.
[0025] refer to Figure 1-Figure 3 , a dual-frequency PCB helical antenna according to an embodiment of the present invention, which includes a PCB dielectric substrate 3, a helical antenna 1, a matching short-circuit microstrip line 2 and a metal ground 4, wherein the helical antenna 1, the matching short-circuit microstrip line 2 and the metal ground 4 are both arranged on the PCB dielectric substrate 3, one end of the matching short-circuit microstrip line 2 is connected to the metal ground 4, and the other end of the matching short-circuit microstrip line 2 is connected to the helical antenna 1 , the helical antenna 1 includes a front microstrip line 11 arranged on the front side of the PCB dielectric substrate 3 and a back microstrip line 12 arranged on the back side of the PCB dielectric substrate 3, the front microstrip...
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