Electronic device and method for improving antenna radiation index

Abstract

The present invention provides a method for improving the radiation index of an antenna. The method is applied to an electronic device, and the method includes: obtaining the output power of a radio frequency module of the electronic device; adjusting the output power according to the output power of the radio frequency module An operating voltage output to an antenna amplifier of the electronic device. The invention also provides an electronic device. The electronic device and the method for improving the antenna radiation index provided by the present invention can adjust the operating voltage of the antenna amplifier according to the output power of the radio frequency module, so that even when the output power of the radio frequency module is relatively large, the antenna amplifier can be well guaranteed. The linearity of the antenna can avoid excessive radiation strays and improve the radiation index of the antenna.

Description

technical field [0001] The invention relates to a device, in particular to an electronic device and a method for improving an antenna radiation index applied to the electronic device. Background technique [0002] Radiation spurious, as the current mandatory certification index for electronic equipment, is the most complicated and difficult problem among all antenna radiation index certifications. Especially for the GSM frequency band, in some working scenarios, its own power will be relatively high, and it is easy to stimulate strong energy in an instant, resulting in excessive radiation of spurious harmonics. In actual use, we also mainly encounter that the third harmonic of GSM900 is easy to exceed the standard, and the second or third harmonic of GSM1800 exceeds the standard. [0003] For radio frequency signals, the transmitted signal will not only contain usable signals (GSM900), but also often contain second (1800GHz) / third harmonic components (2700GHz), most of whic...

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Problems solved by technology

When the third harmonic energy of the radio frequency signal reaches the third resonance of the antenna, these useless harmonic energy will be radiated out, resulting in excessive spurious

[0004] In addition, as a high-power communication connection standard, GSM uses relatively low power in most cases, and the transmitted antenna signal is amplified by an amplifier to realize calls. However, in some scenarios, GSM will also be in a high-power situation. In the case of high power, the linearity of the GSM amplifier will drop sharply and the harmonic components will increase. This carried harmonic component will cause the radiation spurious to exceed the standard with the radiation of the antenna.

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