Antenna system and mobile terminal

Abstract

The invention, which relates to the field of communication, discloses an antenna system and a mobile terminal. The antenna system is composed of a circuit board with feed points and ground points, a housing accommodating a circuit board, and an antenna radiation portion that is in contact and conduction with the feed points and ground points and is accommodated in the housing. A USB port is formedin the circuit board; and the antenna radiation portion is arranged right above the USB port partially at least. A metal tuning portion is arranged between the antenna radiation portion and the housing and is arranged right above the USB port to realize intermediate-frequency and high-frequency tuning of the antenna radiation portion. Compared with the prior art, the antenna system and the mobileterminal have the following beneficial effects: introduction of power consumption devices like a radio-frequency switch and a tuner is avoided; the bandwidth of the needed frequency band is extended;full-frequency-band coverage of communication is realized; and the complexity is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to an antenna system and a mobile terminal. Background technique [0002] With the rapid development of communication technology, LTE (Long Term Evolution, Long Term Evolution) requires antennas to cover wider and wider frequency bands, and low frequency (824-960MHz), intermediate frequency (1710-2170MHz) and high frequency (2300-2690MHz) The three frequency bands are more difficult to achieve, especially the medium and high frequencies (1710-2690MHz). In the prior art, the above-mentioned intermediate frequency and high frequency are usually realized by adding a radio frequency switch (RF switch) or a tuner (tuner) in different states, or through multiple antennas in frequency bands. [0003] However, the inventors of the present invention have found that in the prior art, as the design of the mobile phone body with a metal frame or directly using a metal shell is widely used, and the ex...

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Problems solved by technology

[0003] However, the inventors of the present invention have found that in the prior art, as the design of the mobile phone body with a metal frame or directly using a metal shell is widely used, and the existing mobile phones are getting thinner and thinner, the available area and height of the antenna are getting higher and higher. Therefore, the space reserved for RF switches, tuners, etc. is getting smaller and smaller, making it impossible for the antenna to switch freely in each frequency band

[0004] In addition, since the introduction of RF switches, tuners and other devices in the antenna will cause the loss of the antenna itself, even if the space reserved for the antenna in the mobile phone is sufficient, the introduction of too many RF switches and tuners will also bring damage to the antenna. More loss, thus affecting the standby time of mobile terminals such as mobile phones and affecting user experience

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