Antenna system and mobile terminal

Abstract

The invention relates to the technical field of communication, and particularly relates to an antenna system and a mobile terminal. The antenna system comprises a matching network, a first capacitor element, a tuning switch, a system ground and a mainboard. A strip-shaped gap is formed in the mainboard. The strip-shaped gap is provided with an opening end, a first edge and a second edge. The opening end is located at one end of the strip-shaped gap in the length direction. The opening end is communicated to the edge of the mainboard. The periphery of the strip-shaped gap is electrically connected with the system ground. The first edge and the second edge are opposite in the direction perpendicular to the length direction. The matching network, the first capacitor element and the two ends of the tuning switch are respectively connected to the first edge and the second edge. The first capacitor element is located between the matching network and the tuning switch so as to realize the capacitive feed. According to the invention, a plurality of frequency bands can be covered by only one tuning switch. Therefore, the number of tuning switches is reduced, and the loss caused by a plurality of tuning switches is reduced. The performance of the antenna is improved.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to an antenna system and a mobile terminal. Background technique [0002] At present, mobile terminals such as mobile phones are prevalent in all-metal structures, and the corresponding antennas are designed with all-metal antennas. Antenna switching technology, using DPDT (Double Pole Double Throw, double pole double throw switch) and multiple tuning switches to switch antenna frequency bands, this kind of antenna system, because the number of tuning switches is generally greater than two, significantly increases the design cost, especially The loss caused by the switch affects the performance of the antenna. Contents of the invention [0003] The present application provides an antenna system and a mobile terminal, which can solve the above problems. [0004] The first aspect of the present application provides an antenna system, including: [0005] match...

AI Technical Summary

Problems solved by technology

[0002] At present, mobile terminals such as mobile phones are prevalent in all-metal structures, and the corresponding antennas are designed with all-metal antennas. Antenna switching technology, using DPDT (Double Pole Double Throw, double pole double throw switch) and multiple tuning switches to switch antenna frequency bands, this kind of antenna system, because the number of tuning switches is generally greater than two, significantly increases the design cost, especially The loss caused by the switch affects the performance of the antenna

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