HMD Antenna Array Blind Spot Coverage
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Solution Overview
Problem
Simulated environment communication systems, such as those in virtual and augmented environments, face signal shading issues due to the user's head or head-mounted displays (HMDs) obstructing the line of sight for phased array antennas, resulting in non-line-of-sight signal blind areas that limit signal coverage and stability.
Innovation Solution
A communication device equipped with a directional antenna array and a radiation structure, where the radiation structure is positioned in the non-line-of-sight signal blind area to extend radio frequency signal coverage, ensuring that signals can be transmitted and received even in areas obstructed by the user's head or HMD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If phased array antennas are mounted on HMDs for wireless communication, then wireless communication capability is achieved, but signal coverage is reduced due to head or HMD obstruction
Solution Approach 1:
The antenna system is divided into multiple independent antenna elements arranged in a phased array configuration. Each element can be independently controlled to transmit or receive signals, allowing the system to segment the communication function across multiple positions to overcome obstruction by the head or HMD.
Solution Approach 2:
The patent utilizes spatial dimensionality by arranging antenna elements in a three-dimensional phased array configuration on the HMD. By controlling the phase and amplitude of signals from different spatial positions, the system creates beamforming capabilities that can steer signals around obstructions and cover areas that would otherwise be in blind zones.
2Measurement precision
If directional antenna array is used to transmit signals, then signal directionality is improved, but non-line-of-sight blind areas are created
Solution Approach 1:
The phased array antenna system dynamically adjusts the phase and amplitude of signals from different antenna elements in real-time. This dynamic control allows the beam direction and coverage pattern to be adjusted adaptively, enabling the system to maintain directionality while reducing blind areas through electronic beam steering and pattern synthesis.
Solution Approach 2:
The phased array antenna system performs multiple functions: it provides directional signal transmission for line-of-sight communication, simultaneously creates coverage in non-line-of-sight areas through constructive interference patterns, and can electronically reconfigure beam patterns without physical movement. This multi-functionality resolves the contradiction between directionality and blind area coverage.
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 configuration enhances signal coverage and stability, preventing disconnections by extending signal exchange to previously inaccessible areas, thereby improving communication reliability in simulated environment systems.
Implementation Method 1
The directional antenna array is configured to transmit a radio frequency signal to cover a first signal area
Implementation Method 2
The radiation structure is configured to transmit the radio frequency signal guided from the directional antenna array to cover a second signal area
Data Source
AI summary
Present disclosure relates to a communication device. The communication device includes a body, a directional antenna array and a radiation structure. The directional antenna array is arranged on a first position of the body. The directional antenna array is configured to transmit a radio frequency signal in a first signal area. The directional antenna array has a non-line-of-sight signal blind area with respect to the body. The radiation structure is arranged on a second position of the body. The directional antenna array is configured to transmit the radio frequency signal guided from the directional antenna array to cover a second signal area. The second position is located in the non-line-of-sight signal blind area of the directional antenna array.