Communication terminal capable of effectively reducing HAC/SAR of antenna

Abstract

The invention relates to a communication terminal capable of effectively reducing the hearing aid compatibility / specific absorption rate (HAC / SAR) of an antenna. The communication terminal comprises a printed circuit board (PCB) mainboard, an antenna bracket which is arranged on the PCB mainboard, and an antenna which is arranged on the antenna bracket, and also comprises at least one metal conductor piece; the metal conductor piece generates at least one resonance frequency point, and the resonance frequency point is positioned in an operating frequency range which can improve the HAC / SAR; a gap exists between the metal conductor piece and the PCB mainboard; the metal conductor piece is connected with the PCB mainboard through a connecting piece and then earthed; the metal conductor piece can be arranged at a position near an antenna feed point and also can be arranged at an adverse position near the antenna feed point; the metal conductor piece can be transversely arranged and also can be vertically arranged relative to the PCB mainboard; and the metal conductor piece and a mobile phone antenna are arranged on the same side of the antenna feed point. By arranging the metal conductor piece, current is concentrated on the metal conductor piece, so that the current on the PCB mainboard is weakened, the aim of reducing the HAC is fulfilled; and similarly, a value of the SAR also can be reduced.

Description

A communication terminal that can effectively reduce the HAC / SAR of the antenna technical field The present invention relates to a communication terminal, in particular to a communication terminal capable of effectively reducing HAC / SAR of an antenna. Background technique The definition of specific absorption rate SAR (SpecificAbsorptionRate): Under the action of an external electromagnetic field, an induced electromagnetic field will be generated in the human body. Since various organs of the human body are lossy media, the electromagnetic field in the body will generate currents, resulting in the absorption and dissipation of electromagnetic energy. SAR is commonly used in biological dosimetry to characterize this physical process. The meaning of SAR is the electromagnetic power absorbed or consumed by a unit mass of human tissue, and the unit is W / kg. The test of SAR is the radio wave energy generated by the mobile phone. Pass the test A device to measure how much elec...

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to provide a communication terminal that can effectively reduce the HAC / SAR of the antenna, and solve the technical problem that the HAC / SAR cannot be effectively reduced in the prior art

Images