Multi-Antenna Tuning Using Reflective Wave Error Identification
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Solution Overview
Problem
In high-frequency wireless systems, identifying the source of errors in I/Q values of reflective waves becomes challenging due to overlapping error causes, such as user antenna grip and earjack connections, leading to suboptimal antenna performance.
Innovation Solution
An electronic device with multiple antennas and a processor that uses a lookup table to transmit signals in different modes, receives reflective waves, and adjusts antenna parameters based on measurement values to identify and correct errors, ensuring optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If antenna tuning is performed using I/Q values of reflective waves at high frequency, then wireless communication performance can be optimized, but error identification becomes difficult due to overlapping error causes
Solution Approach 1:
The patent segments the error identification process by dividing error causes into multiple categories (e.g., user grip errors, earjack connection errors, cable errors) and assigning each category a different weight coefficient. This segmentation allows the system to distinguish between overlapping error sources by evaluating the degree of match between measured I/Q values and predefined error patterns, rather than treating all errors uniformly.
Solution Approach 2:
The patent changes the parameter representation by using weighted combinations of I/Q value differences instead of raw I/Q values alone. By introducing weight coefficients for different error causes and calculating composite error metrics, the system transforms the measurement parameters to enhance distinguishability between overlapping error sources while maintaining antenna performance optimization capability.
Data Source
AI summary
According to various embodiments, an electronic device may comprise: a housing; a wireless communication circuit positioned inside the housing so as to transmit/receive at least one radio frequency (RF) signal; multiple antennas positioned inside the housing or configured as parts of the housing and electrically connected to the wireless communication circuit; at least one processor operably connected to the wireless communication circuit; and a memory operably connected to the at least one processor. The memory may store a lookup table comprising a first set of antenna modes regarding at least some of the multiple antennas and a second set of antenna modes regarding at least some of the multiple antennas. In addition, the memory may store instructions that, when executed, cause the processor to: cause the wireless communication circuit to transmit a signal in a first antenna mode included in the first set; cause the wireless communication circuit to receive a reflective wave of the transmitted signal; acquire a measurement value of the received reflective wave; confirm whether the measurement value is included within at least one designated range; confirm a second antenna mode corresponding to the acquired measurement value, among the antenna modes included in the second set, if it is confirmed that the measurement value is included in at least one designated value; and cause the wireless communication circuit to transmit the signal in the second antenna mode. Other various embodiments are possible.