Mobile terminal, antenna device and radio frequency front-end transmitting device
A transmitting device and RF front-end technology, which is applied in the direction of antenna support/installation device, antenna parts, antenna, etc., can solve the problems of inability to adjust the parameters of RF front-end devices, poor radiation spurious indicators, etc., and achieve improved conduction stray and Radiation spurious problem, the effect of high adaptability
Active Publication Date: 2019-03-26
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
However, when the external load is not 50 ohms, it will lead to poor radiation strays (spurs radiated from the test connected to the antenna)
[0005] When the above-mentioned traditional RF front-end devices have problems with spurs (including conduction spurs and radiation spurs), the parameters of the RF front-end devices cannot be adjusted
Method used
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[0024] Referring to the drawings, like reference symbols represent like components. The following description is based on illustrated specific embodiments of the invention, which should not be construed as limiting other specific embodiments of the invention not described in detail herein.
[0025] refer to figure 1 , figure 1 is a block diagram of the mobile terminal of the present invention.
[0026] The mobile terminal of the present invention includes a terminal body 101 and an antenna device 102 , and the terminal body 101 is electrically connected to the antenna device 102 . The mobile terminal can be, for example, a smart phone, a walkman, a digital camera, a tablet computer, a smart TV, a smart speaker and other electronic devices.
[0027] refer to figure 2 , figure 2 is a block diagram of the antenna device 102 of the present invention.
[0028] The antenna device 102 of the present invention includes an antenna 202 and a radio frequency front-end transmittin...
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The invention discloses a mobile terminal, an antenna device and a radio frequency front end transmission device. The radio frequency front end transmission device comprises a power amplifier; an antenna switch; a first matching circuit which is electrically connected with the power amplifier; a second matching circuit which is electrically connected with the antenna switch; and a port circuit which is electrically connected with the first matching circuit and the second matching circuit. The port circuit is used for enabling current channels between the first matching circuit and the second matching circuit to be connected under first predetermined condition, or is electrically connected with an external circuit under second predetermined condition, so that the integrated output parameters composed by the power amplifier, the first matching circuit, the external circuit and the second matching circuit can be adjusted together by employing the external circuit, the first matching circuit and the second matching circuit. The mobile terminal, the antenna device and the radio frequency front end transmission device have relatively high adaptability to external loads of different parameters, so that the problems of conduction stray and radiation stray can be effectively improved.
Description
technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a mobile terminal, an antenna device and a radio frequency front-end transmitting device. Background technique [0002] A traditional radio frequency front-end transmitting device is generally integrated with a GSM (Global System for Mobile communication, Global System for Mobile Communication) power amplifier and an antenna switch. [0003] The maximum power of the above-mentioned GSM power amplifier is very high, and for predetermined frequency bands (for example, GSM850 frequency band and GSM900 frequency band), the GSM power amplifier is prone to severe distortion, thereby generating strong harmonics. [0004] The traditional radio frequency front-end transmitting device mentioned above is generally designed for a 50-ohm load, so it can ensure that the harmonic index is better when an external 50-ohm load is connected. However, in the case that the external...
Claims
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IPC IPC(8): H04B1/00H04B1/40H01Q1/24H01Q23/00
CPCH01Q1/243H01Q23/00H04B1/006H04B1/40
Inventor 杨金胜
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD