Loop antenna system with gaps for radiation

Abstract

The invention provides a Loop antenna system with gaps for radiation. The Loop antenna system comprises a metal frame. The two gaps are formed in the bottom edge of the metal frame. The interior of the metal frame is divided into a clearance zone and a main land portion. The clearance zone is located on the side, close to the gaps, in the metal frame and the main land portion is connected with the metal frame. The two ends of the portion, between the two gaps, of the metal frame are connected with a feed source and the main land portion respectively through antenna portions, so that a Loop antenna structural mode is formed and the antenna portions are located in the clearance zone. According to the Loop antenna system, the metal frame of a mobile terminal serves as a part of an antenna to be used in the radiation process. On one hand, radiation is conducted by the two gaps and the Loop antenna together so that the high-radiation antenna system can be formed and have the advantage that the bandwidth is increased; on the other hand, due to the facts that the two gaps are formed in the bottom edge and the Loop antenna is low in sensitivity, the Loop antenna system has the advantages of being low in sensitivity and high in signal strength.

Description

technical field [0001] The invention relates to the technical field of antenna design, in particular to a Loop antenna system in which slots participate in radiation. [0002] Background technique [0003] At present, mobile phones with metal frames are becoming more and more popular due to fashion, and mainstream mobile phone manufacturers have launched metal phones one after another. However, because the metal frames occupy the space of traditional antennas, the performance of traditional IFA or monopoly antennas drops sharply, and metal phones using traditional antennas radiate and accept poor performance. [0004] Loop antenna is a common antenna form in mobile phone antennas. The advantage of loop antenna is that its sensitivity is relatively low. When the user's head and hand touch the antenna, the antenna will be less affected. However, existing loop antennas can only generate one resonance, have narrow bandwidth and low efficiency. [0005] Contents of the inven...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of poor signal and poor antenna performance of metal mobile phones in the prior art, the present invention provides a Loop antenna system in which slits participate in radiation, including a metal frame, and two slits are opened on one side of the metal frame , the interior of the metal frame is provided with a clearance area and a main part, the clearance area is located on the side of the metal frame close to the two gaps, and the main part is connected to the metal frame; The two ends of the metal frame between the two gaps are respectively connected to the feed source and the main ground part through the antenna part to form a loop antenna structure, and the antenna part is located in the clear space

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