A kind of mobile terminal and adjustment method of antenna matching network
An antenna matching network and mobile terminal technology, applied in transmission systems, electrical components, etc., can solve problems such as changes in antenna S parameters and antenna performance deterioration, and achieve the effect of improving stability
Active Publication Date: 2020-02-18
MEIZU TECH CO LTD
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Problems solved by technology
However, the adjustable matching network scheme in the related art has the following disadvantages: for the current frequency band used, the value written into the adjustable matching network by the baseband is fixed, but in the actual use process, due to the metal of the mobile terminal held by the user The area and strength of the back cover are different, the S parameters of the antenna will change, and the performance of the antenna will further deteriorate
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[0036] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0037] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, therefore, the protection scope of the present invention is not limited to the specific details disclosed below. EXAMPLE LIMITATIONS.
[0038] The embodiment of the first aspect of the present invention proposes a mobile terminal, figure 1 A schematic diagram of a circuit structure of a mobile terminal according to an embodiment of the p...
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The present invention provides a mobile terminal and an adjustment method of an antenna matching network. The mobile terminal includes an antenna, an antenna matching network module, a directional coupler, an antenna switch module and a baseband; the antenna matching network module is connected with the antenna and includes a first adjustable capacitor, a second adjustable capacitor and a fixed inductor; the directional coupler is connected with the antenna matching network module and a radio frequency transceiver and is used for allocating radio frequency signals reflected by the antenna matching network module to the radio frequency transceiver; the antenna switch module is disposed between the directional coupler and the radio frequency transceiver; and the baseband is connected with the radio frequency transceiver, is connected with the first adjustable capacitor through a first control line and is connected with the second adjustable capacitor through a second control line. The mobile terminal provided by the present invention realizes real-time and intelligent adjustment of an antenna matching network in a current frequency band so as to reduce the mismatch of the antenna matching network and improve the performance of the antenna.
Description
technical field [0001] The present invention relates to the technical field of terminal antennas, in particular to a method for adjusting a mobile terminal and an antenna matching network. Background technique [0002] At present, the application of mobile terminals with metal back cover is more and more common. As the equipment for sending and receiving signals, the antenna is usually designed as a part of the mobile terminal antenna in a specific area of the metal back cover. However, when users use the mobile terminal normally, they may It will inadvertently block a part of the antenna area, resulting in instability of the antenna signal strength. For example, when a user is making a voice call or playing a game with a handheld mobile terminal, the user's hand will often hold the mobile terminal and block the antenna area, which not only affects the field shape of the antenna radiation, but also when the palm of the hand touches and blocks the metal area , the S-parame...
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IPC IPC(8): H04B1/00H04B1/04H04B1/18H04B1/525
CPCH04B1/0053H04B1/0458H04B1/18H04B1/525
Inventor 麦锐其
Owner MEIZU TECH CO LTD