Communication electronic device for improving the influence of loss medium to antenna

Abstract

A communication electronic device which improves the affect of dissipative medium to antenna includes a shell, a circuit board which is set in the shell, an antenna and a reflection layer which are above the circuit board, and a dissipative medium is set on the shell, at least one part of the dissipative medium and antenna in shell are superposed, the reflection layer is made of conductive material, and set between the dissipative medium and the antenna and corresponding with the part of the dissipative medium and antenna, it does not contacted with the antenna. By the antenna signal is reflected between the reflection layer and the antenna, it avoids the area of dissipative medium, and does not prong the dissipative medium to loss energy of signal.

Description

Technical field [0001] The invention relates to an electronic device, particularly a communication electronic device provided with an antenna. Background technique [0002] When the antenna signal passes through a material with poor conductivity, a part of the energy will be lost. The material with poor conductivity (such as the human body, buildings, etc.) is usually called a lossy medium. [0003] Figures 1 and 2 show the internal components of a mobile phone 1, including a casing 11, a circuit board 12 and an antenna 13. The circuit board 12 is arranged in the casing 11, and the antenna 13 is arranged above the circuit board 12. To optimize the position of the antenna 13, the overall appearance of the mobile phone and the use of the internal space of the mobile phone, some mobile phone configurations will place the brand logo, the camera’s self-portrait mirror or other poorly conductive lossy media 15 on the antenna 13 is above and partially overlaps the antenna 13. As shown i...

AI Technical Summary

Problems solved by technology

[0003] Fig. 1, Fig. 2 are the internal part components of a mobile phone 1, comprise a housing 11, a circuit board 12 and an antenna 13, the circuit board 12 is located in the housing 11, and the antenna 13 is located at the top of the circuit board 12, and consider Regarding the optimization of the location of the antenna 13, the overall appearance of the mobile phone, and the use of the internal space of the mobile phone, the configuration of some mobile phones will place the brand logo, the selfie mirror of the camera or other lossy media 15 with poor conductivity on the antenna. 13 and partially overlaps with the antenna 13, the lossy medium 15 referred to in the figure is the Selfie mirror of the mobile phone 1, and the photographic lens 14 connected with the Selfie mirror is located at the bottom of the antenna 13 corresponding to the Selfie mirror, but In this way, the part of the antenna 13 located directly below the lossy medium 15 will cause a part of energy loss when the radiated signal passes through the lossy medium 15 above.

However, if the antenna does not overlap with the lossy medium, changing the position of the lossy medium will affect the overall design of the mobile phone, and changing the position of the antenna will affect the performance of the antenna.

[0004] Refer to Figure 2 and Figure 6, among them, Figure 6 shows the experimental results of the mobile phone antenna operating in the GSM 900MHz frequency band, the data point marked with a circle "○" is the radiation gain of the mobile phone antenna without passing through the lossy medium, and the data point marked with a rectangle "□" The data point of is the radiation gain of the mobile phone antenna passing through the lossy medium. It can be seen from Figure 6 that the lossy medium 15 will reduce the gain of the antenna 13 by about 1-2dB

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