Circuit board assembly and terminal equipment for improving antenna radiation performance

Abstract

The invention provides a terminal device. The terminal device comprises a circuit board component and an antenna; the circuit board component comprises a circuit board and an component on the circuitboard, the antenna is arranged in a first clearance area of the mobile device, and part of the circuit board extends into the first clearance area; the component comprises a plurality of ports including a grounding port, and when the component is arranged on the circuit board, the part, close to or located on the first clearance area, of the component is the part corresponding to the grounding port. The invention further provides the circuit board assembly. According to the terminal device, the clearance area close to the antenna is arranged on one side of the grounding port of the component which is arranged on the circuit board, accordingly, influence of the component which is arranged close to the clearance area to antenna signals can be lowered, and radiated spurious emission of the antenna is lowered.

Description

technical field [0001] The invention relates to a circuit board structure of electronic equipment, in particular to a circuit board assembly capable of improving antenna radiation performance and terminal equipment with the circuit board assembly. Background technique [0002] Radiation spurious, as the current mandatory certification index for electronic equipment, is the most complicated and difficult problem among all certifications. Especially for the GSM frequency band, because its own power is particularly high, it is easy to excite strong energy in an instant, which will cause the radiation of spurious harmonics to exceed the standard. 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 co...

AI Technical Summary

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] With the advent of the full-screen era of mobile phones and other electronic devices, many nonlinear devices are placed at the top and bottom of the electronic device, getting closer and closer to the antennas that are also placed at the top and bottom. These nonlinear devices often lead to The problem of the radiation spurious of the antenna exceeding the standard

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