A frequency band switch antenna
An antenna and switch technology, applied in the field of frequency band switching antennas, can solve the problem of low low frequency radiation efficiency of the antenna, and achieve the effect of increasing the antenna bandwidth, improving the low frequency radiation efficiency, and widening the low frequency bandwidth.
Active Publication Date: 2019-05-31
LENOVO (BEIJING) LTD
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Problems solved by technology
[0006] An embodiment of the present invention provides a frequency band switch antenna, which is used to solve the technical problem of low-frequency antenna radiation efficiency in the prior art
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Embodiment 1
[0036] Please refer to figure 1 and figure 2 , the embodiment of the present application provides a frequency band switch antenna applied to an electronic device, including:
[0037] An antenna radiator, the antenna radiator includes: an antenna ground point G, an antenna feed point F, a switch access point S and an antenna branch;
[0038] In the embodiment of the present application, the antenna includes a first antenna branch 11 . Among them, a first antenna branch 11 is arranged between the antenna ground point G and the antenna feed point F, forming a semi-enclosed layout structure for the antenna ground point G and the antenna feed point F, that is: the first antenna branch 11 is located at the antenna The two sides of the connection line AA' between the ground point G, the antenna feed point F and the switch access point S are used to extend the low frequency radiation path of the antenna.
[0039] In the embodiment of the present application, the antenna further in...
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The invention discloses a frequency range switch antenna and is applied to an electronic switch. The frequency range switch antenna comprises an antenna radiator, and the antenna radiator comprises an antenna grounding point, an antenna feed point, a switch access point and an antenna branch; a first antenna branch is arranged between the antenna feed point and the antenna grounding point, the first antenna branch is disposed at the two sides of a connecting line among the antenna grounding point, the antenna feed point and the switch access point so as to prolong the low-frequency radiation path of the antenna. In the technical scheme provided by the invention, the first antenna branch in half-surrounded layout is arranged between the antenna feed point and the antenna ground point, i.e., the first antenna branch is disposed at the two sides of the connecting line among the antenna grounding point, the antenna feed point and the switch access point, such that the radiation path of the antenna at a low frequency is fully prolonged, and the low-frequency radiation efficiency of the antenna is improved.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a frequency band switch antenna. Background technique [0002] With the continuous development of science and technology, wireless communication technology has been developed rapidly, and switches are introduced into antenna design. Different circuit devices are combined with the antenna through switches to adjust the antenna in different frequency bands. [0003] In the prior art, the switch comprises an adjustment point from which a wire branches off to the adjustment circuit of the antenna. The regulating circuit includes a switch and a reactive element connected to ground selected by the switch. When the reactive element is changed, the resonant frequency of the whole radiator is changed, in which case the corresponding operating frequency band is shifted. If the antenna is manufactured as a dual-band antenna, the above-mentioned operating frequency band is ...
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IPC IPC(8): H01Q1/36H01Q5/10H01Q5/371H01Q5/28
Inventor 何其娟
Owner LENOVO (BEIJING) LTD