| 摘要 |
The disclosure provides a device and a method for antenna impedance matching. The device comprises an application detection module, configured to detect a current state of an antenna of a terminal, and output a matching adjustment signal according to the state; an adaptive control module, configured to perform control over a process of matching adjustment in response to the matching adjustment signal; and a matching adjustable module, configured to, under control of the adaptive control module, perform matching adjustment on impedance of the antenna through an impedance matching network corresponding to the matching adjustment signal. Through the technical solution provided by the disclosure, the problem of single impedance matching mode in the prior art is solved, and further, the effect that differential matching can be performed for various application states of the terminal is achieved. |
| 主权项 |
1. A device for antenna impedance matching, comprising:
an application detection module, configured to detect a current state of an antenna of a terminal, and output a matching adjustment signal according to the state; an adaptive control module, configured to perform control over a process of matching adjustment in response to the matching adjustment signal; a matching adjustable module, configured to, under the control of the adaptive control module, perform the matching adjustment on impedance of the antenna through an impedance matching network corresponding to the matching adjustment signal; a feedback coupling module, configured to sample a matched impedance value to obtain a circuit measurement value, and output the circuit measurement value to a matching comparison module; the matching comparison module, configured to perform a matching comparison between the circuit measurement value and a target characteristic impedance value, and feed a matching comparison result back to the adaptive control module; wherein the application detection module comprises: a proximity sensing unit, configured to sense a hand of a person, the head of the person and a free space, and output a sensing result to an application detection unit; a state sensing unit, configured to sense a posture of the terminal and a use orientation of the terminal, and output a sensing result to the application detection unit, wherein the posture comprises opening, closing, slide-up, slide-down, side slide and rotation; a user interaction unit, configured to output a setting result to the application detection unit in response to setting of a working state of the terminal by a user; and the application detection unit, configured to output the matching adjustment signal according to the sensing result output by the proximity sensing unit, the sensing result output by the state sensing unit and the setting result output by the user interaction unit; wherein the adaptive control module is further configured to, in response to the matching adjustment signal output by the application detection module, control the matching adjustable module to perform the matching adjustment until full matching is achieved according to a preset digital voltage mapping table and the matching comparison result fed back by the matching comparison module; wherein the matching comparison module comprises: a matching optimization unit, configured to provide a shortest matching adjustment path, which is able to achieve full matching, according to a preset matching curve graph. |
