Small-sized short-circuited planar antenna

Abstract

The invention relates to a small-sized short-circuited planar antenna which comprises a grounding part, a radiation part, a short-circuited section and a feed-in section, wherein the grounding part is provided with a first short edge and a second short edge; the radiation part is arranged on a side face of the grounding part at a certain interval and is provided with a third short edge and a fourth short edge, the third short edge is aligned at the first short edge, and the second short edge and the fourth short edge are both arranged on the same side of the first short edge; one side edge of the short-circuited section is connected with the first short edge of the grounding part, and another side edge, opposite to the side edge, of the short-circuited section is connected with the third short edge of the radiation part; and one side edge of the feed-in section is connected with the third short edge of the radiation part and extends from the third short edge to the direction of the first short edge so as to form a first slit between the side edge of the feed-in section and the first short edge, and a second slit communicated with the first slit is formed between the feed-in section and the short-circuited section. The antenna is simple in structure, easy to make and low in cost; and the short-circuited section and the feed-in section are both arranged on the same side of the antenna, thereby facilitating the feed-in of signals.

Description

technical field [0001] The invention relates to a built-in antenna, in particular to a small short-circuit planar antenna. Background technique [0002] refer to figure 1 As shown, in addition to the larger area, the traditional planar antenna 1 using half-wavelength resonant metal sheet structure usually needs to be matched with the ground plane 11 of the system circuit board 10, and must be integrated with the ground plane 11 of the system circuit board 10, which cannot It is set separately inside the electronic device, so the setting position is not flexible. see again figure 2 As shown, the traditional flat-panel inverted-F antenna 2 is a further improvement of the above-mentioned flat-panel antenna 1, which adds the design of the short-circuit portion 21, which can help the antenna impedance matching and effectively reduce the area of ​​the radiator 22, but the feed-in portion of the antenna 2 23 and the short-circuit portion 21 are not arranged on the same side, an...

AI Technical Summary

Problems solved by technology

However, this kind of flat panel antenna can only be placed on one side of the metal object. If it is placed directly above the metal object, it will affect the impedance matching and radiation performance of the antenna.

[0004] It can be seen that the above-mentioned existing built-in antenna obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. This is obviously the relevant industry. Urgent problem

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