A wireless earphone using a short-tailed helical antenna and a short-circuited l-shaped radiator

Abstract

The invention discloses a wireless earphone using a short-tail helical antenna and a short-circuited L-shaped radiator. The wireless earphone comprises a circuit board, a battery, a loudspeaker, a housing, a switch button and an antenna system. The antenna system comprises the short-tail helical antenna and the short-circuited L-shaped radiator. The short-circuited L-shaped radiator is an L-shaped structure. An input point is arranged on a circuit board. The short-tail helical antenna is connected with the input point in a spiral structure and the short-circuited L-shaped radiator is also connected with the input point. The input point is connected with a wireless module through a transmission line. The wireless earphone is provided with the short-tail helical antenna and the short-circuited L-shaped radiator in an orthogonal structure so that a diversity effect can be formed and can reduce the number of zero points of the antenna to greatly enhance the antenna receiving capability of the wireless earphone. In addition, the inductive effect of the short-circuited L-shaped radiator and the capacitive effect of the short-tail helical antenna form a resonant structure to increase the bandwidth of the antenna system, thereby improving the signal receiving performance and the acoustic effect of the earphone.

Description

technical field [0001] The invention relates to the technical field of communication devices, in particular to a wireless earphone. Background technique [0002] Ordinary wireless earphones usually only use a radio frequency receiver to maintain communication between the earphone and the signal source. In order to achieve normal communication between the left and right earbuds, the antenna should be kept away from the human body as much as possible to reduce the signal attenuation caused by the human body. However, using It is obviously unrealistic for the antenna to be far away from the human body. In order to solve this contradiction, the technical solution disclosed in the invention patent CN106331928A is adopted, that is, by setting the helical antenna and cooperating with the metal grounding ring, the influence of the antenna on the attenuation of the signal by the human body can be reduced to ensure the stability of the earphone for signal reception sex and reliabilit...

AI Technical Summary

Problems solved by technology

However, this design cannot achieve the diversity effect, and the diversity effect can reduce the null point of the antenna, thereby enhancing the receiving ability of the wireless earphone antenna

Because the human head has an absorption effect on high-frequency signals, when the high-frequency signal is transmitted from the left ear to the right ear, the head will attenuate most of the signal, and the current wireless earphone technology cannot effectively solve the problem. a question

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