An antenna applied to a mobile terminal

Abstract

The invention discloses an antenna applicable to a mobile terminal. The antenna comprises upper and lower printed boards; a monopole radiation unit is printed on the front of the lower printed board; the monopole radiation unit is electrically connected to a metal feeding point; clad copper at the back of the lower printed board is used as one part of a radiator of the antenna, and simultaneously used as a main floor of the antenna; a short-circuit radiation unit is printed on the front of the upper printed board; and the short-circuit radiation unit is connected to the clad copper at the back of the lower printed board. The monopole radiation unit and the short-circuit radiation unit are respectively printed on the upper and lower printed boards; therefore, resonance at different frequencies is generated; the antenna can work in multiple frequency bands; the occupation area of the antenna is effectively reduced; therefore, the structure of the antenna is compact; miniaturization of the antenna is easily realized; the monopole radiation unit in the lower layer is directly stimulated, and coupled to the short-circuit radiation unit in the upper layer; a distributed LC matching circuit can be realized; the capacitive reactance of an input port is increased; and the distributed inductive reactance characteristic is introduced.

Description

technical field [0001] The invention relates to the field of mobile terminal communication, in particular to an antenna applied to a mobile terminal. Background technique [0002] As an important part of the mobile terminal, the antenna is an important radio device for transmitting and receiving electromagnetic waves. Its performance is directly related to the communication quality of the communication system and plays a very important role in the overall performance of mobile communication. The continuous upgrading of today's mobile communication systems provides new index requirements for mobile terminal antennas. The design and research of new miniaturized antennas that meet wider bandwidth, multi-band, high efficiency, and better adapt to various requirements of the system are the current domestic and foreign terminal antennas. important research topics in the field. [0003] The coexistence of various mobile communication systems today and the signals of peripheral wir...

AI Technical Summary

Problems solved by technology

[0003] The coexistence of various mobile communication systems today and the signals of peripheral wireless devices such as Bluetooth, Wi-Fi, and GPS require antennas to work in multiple frequency bands, and require a wide bandwidth to ensure good communication quality. Currently, they are widely used in mobile terminals There are basic antenna forms such as monopole antennas, PIFA antennas, IFA antennas, and loop antennas, but these basic forms of antennas have been difficult to meet the increasing demand for high-performance miniaturized antennas.

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