Antenna Array Beam Management for Blocked Antennas
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional beam management methods for mmWave antenna arrays in mobile devices fail to efficiently manage blocked antennas, leading to a decrease in equivalent isotropically radiated power (EIRP) as the number of blocked antennas increases.
Innovation Solution
A beam management method that detects blocked antennas and selectively excites only the unblocked antennas in the antenna array, thereby maintaining or improving EIRP performance even when some antennas are obstructed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If all antennas in the mmWave antenna array are excited at the same time using conventional beam management, then the system maintains simple operation and structure, but the EIRP decreases when some antennas are blocked by hand
Solution Approach 1:
The beam management system dynamically adjusts the excitation state of antennas based on real-time blocking detection. The system transitions from a static fully-excited mode to a dynamic mode where blocked antennas are identified and excluded from excitation, while unblocked antennas are selectively activated to maintain optimal EIRP performance
Solution Approach 2:
The system implements a feedback mechanism where the blocking state of antennas is continuously detected and used to control the excitation status. The detection result feeds back to the beam management module, which adjusts the excitation configuration accordingly - blocked antennas are not excited while unblocked antennas are excited to maintain high EIRP
2Loss of energy
If blocked antennas continue to radiate using conventional beam management, then the system structure remains simple, but the radiation efficiency decreases and EIRP is reduced
Solution Approach 1:
The system performs preliminary detection of antenna blocking status before initiating the excitation process. By detecting which antennas are blocked in advance, the system prevents blocked antennas from being excited, thereby avoiding energy loss and maintaining high radiation efficiency from the outset
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 enhances the total efficiency of the antenna array and increases the equivalent isotropically radiated power (EIRP) by focusing excited power on unblocked antennas, resulting in improved performance and reduced power density exposure to the human body.
Implementation Method 1
The mmWave antenna array can be used to gain better equivalent isotropically radiated power (EIRP) by performing beamforming
Implementation Method 2
the mmWave antenna array can be used to gain better equivalent isotropically radiated power (EIRP) by performing beamforming in a small angular area
Data Source
AI summary
A beam management method of an electronic device includes transmitting a detecting signal, receiving a reflecting signal of the detecting signal, determining blocked antennas of an antenna array of the electronic device according to the reflecting signal, and exciting only unblocked antennas of the antenna array. This will improve the radiation efficiency of the antenna array.