multi-frequency antenna

Abstract

The invention discloses a multi-band antenna which comprises a longitudinal grounding plate, a first longitudinal arm parallel to the grounding plate, a connecting arm for connecting the grounding plate with the first longitudinal arm, and a first horizontal arm extending from the first longitudinal arm to the grounding plate, wherein the grounding plate is provided with a longitudinal edge extending in a longitudinal direction; the first longitudinal arm extends in the longitudinal direction, is spaced from the grounding plate, and is provided with a first tail end and a second tail end, which are opposite to each other; the second tail end of the first longitudinal arm is connected with the longitudinal edge of the grounding plate through the connecting arm; the first horizontal arm extends from the part, close to the first tail end, of the first longitudinal arm to the grounding plate, is spaced from the grounding plate, and is provided with a signal feeder point; the first longitudinal arm is divided into two radiation parts with different lengths by the first horizontal arm, and the radiation parts are positioned on the two sides of the first horizontal arm. Compared with the prior art, the multi-band antenna has the advantages that the radiation efficiency is improved to a certain extent, and the radiation isolation degree is improved.

Description

[0001] 【Technical field】 [0002] The invention relates to a multi-frequency antenna. [0003] 【Background technique】 [0004] In notebook computers, especially under the mechanical conditions of the all-metal magnesium-aluminum back cover, the position of the antenna is forced to move between the rotating shaft and the body. However, the location of this mechanism has a serious impact on the shielding effect of the antenna radiation, resulting in poor radiation efficiency of the PIFA antenna. Moreover, the location of this mechanism is likely to be occupied by other cables from the rotating shaft, which greatly limits the space for placing the antennas, resulting in poor isolation between adjacent PIFA antennas. [0005] Therefore, it is necessary to design a multi-frequency antenna to overcome the above problems. [0006] 【Content of invention】 [0007] The object of the present invention is to provide a multi-frequency antenna with improved radiation efficiency. [0008]...

AI Technical Summary

Problems solved by technology

However, the location of this mechanism has a serious impact on the shielding effect of antenna radiation, resulting in poor radiation efficiency of PIFA antennas

Moreover, the location of this mechanism is easily occupied by other cables from the rotating shaft, which greatly limits the space for placing antennas, resulting in poor isolation between adjacent PIFA antennas

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