Antenna system and mobile terminal
An antenna system and antenna technology, applied in the direction of antenna, antenna coupling, antenna grounding device, etc., can solve the problems of mutual signal interference, affecting the accuracy of SAR sensors and mobile phone antennas, etc.
Active Publication Date: 2021-04-20
ONEPLUS TECH SHENZHEN
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Problems solved by technology
However, the signal of the SAR sensor and the signal of the mobile phone antenna will interfere with each other when it is working, which will affect the accuracy of the independent work of the SAR sensor and the mobile phone antenna.
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[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0029] figur...
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The invention relates to an antenna system and a mobile terminal, comprising an antenna device, a SAR sensor, a first decoupling unit and a second decoupling unit, one end of the first decoupling unit is connected to the SAR sensor, and the other end is connected to a metal frame antenna; the antenna tuning device is connected to a radio frequency The signal source, the metal floor and the second decoupling unit, the second decoupling unit is connected to the metal frame antenna; the antenna tuning device is used to receive the radio frequency signal emitted by the radio frequency signal source and adjust the resonant frequency of the metal frame antenna; the SAR sensor is used to detect the metal frame The capacitance value between the frame antenna and the metal floor; the first decoupling unit is used to isolate the interference of the radio frequency signal to the operation of the SAR sensor; the second decoupling unit is used to isolate the interference of the signal of the SAR sensor to the operation of the antenna tuning device. The radio frequency signal of the antenna device and the low frequency signal of the SAR sensor can be isolated by the first decoupling unit and the second decoupling unit, so that the antenna device and the SAR sensor work independently without mutual influence.
Description
technical field [0001] The invention relates to the field of antennas, in particular to an antenna system and a mobile terminal. Background technique [0002] In the prior art, there are four main ways to reduce the SAR (electromagnetic wave absorption ratio) value of the mobile phone: 1) select an appropriate antenna type according to the structure of the mobile phone, such as the SAR value of the PIFA antenna is much smaller than that of the monopole antenna; 2) change the direction of the antenna By changing the wiring method of the antenna radiator, moving or weakening the hot spot distribution of the electromagnetic field to reduce the SAR value, such as pasting copper foil on the mobile phone shell to change the radiation pattern of the antenna to reduce the SAR value; 3) To reduce the OTA performance of the mobile phone, For example, reduce the antenna radiation efficiency or reduce the radio frequency transmission power to reduce the SAR value; 4) Use the SAR sensor ...
Claims
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IPC IPC(8): H01Q1/36H01Q1/48H01Q1/50H01Q1/52H01Q23/00
CPCH01Q1/36H01Q1/48H01Q1/50H01Q1/52H01Q23/00
Inventor 李杰山周昌文
Owner ONEPLUS TECH SHENZHEN