Dual-Band Antenna Selection to Minimize Mutual Interference
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Solution Overview
Problem
In electronic devices supporting multiple heterogeneous wireless communication schemes, mutual interference between signals transmitted through different antennas can degrade signal quality, and increasing transmission power to mitigate this interference leads to higher power consumption.
Innovation Solution
The electronic device employs a method to select antenna combinations based on a look-up table that considers the radiation energy concentration region, allowing it to transmit signals from all antennas in a radiation concentration region while using another region's antenna for some transmissions, thereby minimizing mutual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transmission power is increased to mitigate mutual interference between signals from different antennas, then signal quality is improved, but power consumption increases
Solution Approach 1:
The patent pre-calculates and stores antenna combination information in a look-up table before actual signal transmission. The processor determines which antenna combinations will cause mutual interference in advance, and stores the corresponding non-interference antenna combinations. During operation, the system simply queries the pre-computed look-up table rather than performing complex real-time calculations, thus achieving fast interference avoidance without increasing transmission power or consuming excessive processing energy.
Solution Approach 2:
The patent introduces a look-up table as an intermediary data structure that mediates between the antenna selection requirement and the interference avoidance requirement. The look-up table pre-stores optimal antenna combination information, acting as a reference guide that enables the system to select antennas that avoid mutual interference without requiring real-time power adjustments. This intermediary structure resolves the contradiction by providing pre-computed solutions that eliminate the need for increased transmission power.
2Adaptability or versatility
If antennas are selected for each frequency band independently, then each wireless communication scheme operates optimally, but mutual interference between signals from different antennas degrades signal quality
Solution Approach 1:
The patent applies local quality by making different antennas serve different functions based on their spatial positions and frequency band characteristics. Instead of using all antennas uniformly for all frequency bands, the system selectively activates specific antennas for specific frequency bands based on pre-computed interference patterns. The look-up table stores antenna combination information that assigns different antennas to different frequency bands in a way that minimizes mutual interference, thus achieving optimal local utilization of each antenna's characteristics.
Solution Approach 2:
The patent changes the selection parameters of antennas based on frequency band requirements and spatial interference patterns. The system dynamically selects which antennas to activate for each frequency band by querying the look-up table, which contains pre-determined antenna combinations optimized for each frequency band. This parameter change approach allows the system to adapt antenna selection to specific frequency band requirements while avoiding mutual interference, thereby maintaining both adaptability and signal quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively minimizes mutual interference between signals from different antennas, improving signal quality without significantly increasing power consumption.
Implementation Method 1
a plurality of first antennas configured to transmit a signal of a first frequency band, a plurality of second antennas configured to transmit a signal of a second frequency band
Data Source
AI summary
In a method for operating an electronic device according to various embodiments: signal transmission in a first frequency band and signal transmission in a second frequency band are determined whether to be performed simultaneously by a first selected antenna selected from a plurality of first antennas configured to transmit a signal in the first frequency band and a second selected antenna selected from a plurality of second antennas configured to transmit a signal in the second frequency band, respectively; based on the signal transmission in the first frequency band and the signal transmission in the second frequency band being determined to be performed simultaneously, the first selected antenna and/or the second selected antenna are decided based on a look-up table created in accordance with the placements of the plurality of first antennas and the plurality of second antennas in the electronic device; and a signal is transmitted in the first frequency band by the first selected antenna, and a signal is transmitted in the second frequency band by the second selected antenna.