Mobile terminal and radio frequency architecture thereof

Abstract

The invention discloses a mobile terminal and a radio frequency architecture thereof, comprising a trans receiver, a main radio frequency switch, a diversity switch, a main antenna and a diversity antenna, wherein the trans receiver is connected with the main radio frequency switch through access of main radio frequency, the trans receiver is connected with the diversity switch through diversity access, signal of domination antenna with low frequency: band20 / band17 / band13 is debugged through diversity access,signal of diversity antenna with low frequency: band20 / band17 / band13 is debugged through access of main radio frequency; shift of antenna is realized through adjustment of domination and diversity access which does not need to add switch and does not increase loss. At the same time, the mobile terminal and its radio frequency architecture have low requirement for the layout of main board, and are suitable for rapid design.

Description

technical field [0001] The present invention relates to the field of mobile terminals, in particular to a radio frequency architecture of a mobile terminal. Background technique [0002] At present, the development of mobile phones is from 2G to 3G and 4G. With the increase of modes, the frequency bands also increase a lot. Especially for overseas projects, there will be many 4G FDD frequency bands, which will increase the difficulty for antennas. [0003] On the other hand, as mobile phone IDs tend to be more and more metallized, metallization means that the antenna environment is getting worse. However, overseas projects basically have multiple low-frequency bands. For signals, the lower the frequency band and the longer the wavelength, the larger the area required for the antenna. Multiple low-frequency bands mean that multiple low-frequency antennas are required. For metal antennas, there are great restrictions on mobile phone IDs. [0004] The radio frequency structur...

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Problems solved by technology

[0003] On the other hand, as mobile phone IDs tend to be more and more metallized, metallization means that the antenna environment is getting worse

However, overseas projects basically have multiple low-frequency bands. For signals, the lower the frequency band and the longer the wavelength, the larger the area required for the antenna. Multiple low-frequency bands mean that multiple low-frequency antennas are required. For metal antennas, the restrictions on mobile phone ID are very large

[0004] The radio frequency structure of existing mobile phones is generally realized by switching switches, that is, there are low-frequency antennas on the upper and lower sides, and the antenna is selected by switching frequency bands. However, adding a switching switch is equivalent to adding devices, and adding devices will increase losses. The increased loss basically offsets the effect of the antenna. At the same time, the price of the antenna switch is relatively high, and the requirements for the layout of the motherboard are also high, which is not suitable for rapid design.

[0005] Therefore, prior art still needs to improve and develop

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