Elimination method and device for frequency band strays in radio frequency module and mobile terminal
A radio frequency module, spurious technology, applied in transmitter monitoring, transmission monitoring, electrical components and other directions, can solve the problem of filter affecting the performance of other frequency bands, and achieve the effect of eliminating spurs and reducing power consumption
Inactive Publication Date: 2017-08-04
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
[0004] The present invention provides a method, device and mobile terminal for eliminating spurs in frequency bands in a radio frequency module, aiming to solve the problem that adding a filter will affect the performance of other frequency bands when eliminating spurs in frequency bands in a radio frequency module
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[0021] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0022] refer to figure 1 , figure 1 It is a schematic diagram of the structure and location of the frequency band spurious elimination device in the radio frequency module provided by the first embodiment of the present invention. The device can be located in mobile terminals with radio frequency functions such as mobile phones and PADs, and...
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The embodiment of the invention discloses an elimination device for frequency band strays in a radio frequency module and applies to the technical field of a mobile terminal. The device comprises a switching module and a filter module. The switching module is used for switching on a lead between the radio frequency module and a transceiver, thereby directly connecting the radio frequency module with the transceiver. The switching module is also used for switching off the direct connection of the radio frequency module and the transceiver according to a control command and switching on a filter access comprising the filter module, so the radio frequency module is connected with the transceiver through the filter module. The strays output by the transceiver are eliminated by the filter module, thereby eliminating the frequency band strays in the radio frequency module. The embodiment of the invention also discloses an elimination method for the frequency band strays in the radio frequency module and a mobile terminal. The strays of a frequency band are eliminated, the strays output from the radio frequency reach a standard, the normal working of other frequency bands is not interfered, and moreover, the power consumption is reduced when the strays are not eliminated.
Description
technical field [0001] The invention belongs to the technical field of mobile terminals, and in particular relates to a method, a device and a mobile terminal for eliminating frequency band spurs in a radio frequency module. Background technique [0002] With the improvement of packaging technology and the increase of radio frequency bands, the trend of integrating radio frequency devices into modules is becoming more and more obvious. A radio frequency module integrates power amplifiers (PA, Power Amplifier) and filters of many frequency bands. Some radio frequency modules have only one input terminal and one output terminal. Some overall performance of the module meets the requirements, but the spurs of individual frequency bands are Some frequency points may exceed the standard. [0003] The conventional technology is to add a filter to the path through which the spurious frequency band passes, but the radio frequency module has only one input terminal and one output t...
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IPC IPC(8): H04B1/401H04B1/04H04B1/10H04B17/10
CPCH04B1/401H04B1/0475H04B1/1018H04B17/102
Inventor 张余坤巫国平
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD