Mobile phone

A mobile phone and printed circuit board technology, applied in the field of mobile phones compatible with hearing aids, can solve the problems of interference noise, HAC compatibility, hearing aid interference, etc., and achieve the effect of reducing interference noise, solving interference, and improving compatibility

A mobile phone and printed circuit board technology, applied in the field of mobile phones compatible with hearing aids, can solve the problems of interference noise, HAC compatibility, hearing aid interference, etc., and achieve the effect of reducing interference noise, solving interference, and improving compatibility

CN102055822BActive Publication Date: 2013-10-23菏泽石炭纪科技有限公司
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Embodiment Construction

[0018] The present invention provides a mobile phone. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] The invention provides a mobile phone. The choke sleeve is arranged on the path of the radio frequency induction current, and the radio frequency induction current is cut off at a position away from the loudspeaker, thereby reducing the interference noise caused by the mobile phone and the hearing aid, and improving the HAC compatibility of the mobile phone. Such as figure 2 As shown, a mobile phone includes a printed circuit board 101, and the two ends of the printed circuit board 101 are respectively provided with an antenna 102 and a speaker 103. The printed circuit board can adopt any form in the prior art, and the antenna 102 The loudspeaker 103 may adopt an existing technical...

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Abstract

The invention discloses a mobile phone comprising a printing circuit board of which two ends are respectively provided with antennae and a speaker. The mobile phone is characterized in that the printing circuit board between the antennae and the speaker is provided with a choke sleeve which is arranged on a radio-frequency induction current path conducting in the direction from the antennae to the speaker; and the common earth wires between the choke sleeve and the printing circuit board are connected. In the invention, the choke sleeve is arranged on the radio-frequency induction current path conducting in the direction from the antennae to the speaker; and the common earth wires between the choke sleeve and the printing circuit board are connected, which is equivalent to the condition that infinite resisters are connected on the radio-frequency induction current path in series, thus improving the HAC compatibility of the mobile phone, lowering the interfering noise caused by the mobile phone and an audiphones, and having no influence on the radiance of the antennae.

Description

technical field [0001] The invention relates to the communication field, in particular to a mobile phone compatible with hearing aids. Background technique [0002] HAC phones are hearing aid compatible phones. The full name of HAC is Hearing Aid Compatibility, which is a standard for mobile phones to support hearing aid compatibility. In North America and Europe, most well-known mobile phone manufacturers and communication equipment suppliers provide mobile phones with very little radiation and frequency interference, and they are compatible with hearing aid inductors or microphones. HAC involves two compatibility coefficients "M" and "T", ("M" is the compatibility for the microphone; "T" is the compatibility for the induction coil). The interference of the mobile phone to the hearing aid microphone meets the M4 level, that is, the least interference; the inductance compatibility coefficient reaches the T4 level, that is, the built-in inductive circuit of the hearing aid ...

Claims

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Application Information

Patent Timeline
23 Oct 2013
Publication
CN102055822B
IPC
H04M1/02; H04M1/19
Inventors
张莲