UAV Directional Antenna Switching for Range and Power Control
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) face challenges in efficiently managing antenna power consumption and range due to regulatory restrictions, leading to reduced operating time and potential interference, especially when multiple antennas are used.
Innovation Solution
A UAV system dynamically selects a subset of directional antennas based on its position, orientation, and line of sight to a remote receiver, ensuring optimal gain and compliance with regulatory limits by iteratively choosing the best antenna for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used for wireless communication, then transmission reliability and coverage are improved, but power consumption increases and operating time decreases
Solution Approach 1:
The patent implements dynamic antenna selection where the flight control system continuously monitors communication conditions and switches between different antenna configurations based on real-time requirements. This allows the system to use multiple antennas only when necessary for reliability, while switching to single-antenna mode during normal operation to conserve power.
Solution Approach 2:
The system changes operational parameters by adjusting which antennas are active based on communication needs. The flight control system modifies antenna selection parameters dynamically, transitioning between different antenna states (active/inactive) to optimize the balance between transmission reliability and power consumption.
2Length of moving object
If antenna power and gain are increased to extend operating range, then communication range is improved, but regulatory limits are exceeded causing interference
Solution Approach 1:
The patent segments the antenna system into multiple directional antennas with different radiation patterns. By dividing the communication function across multiple specialized antennas rather than using a single high-power antenna, the system achieves extended range through selective beamforming while keeping individual antenna gains within regulatory limits.
Solution Approach 2:
Different antennas are positioned and oriented to provide localized communication coverage in different directions. The flight control system selects specific antennas based on the desired communication direction, allowing the system to extend range in specific directions without exceeding regulatory gain limits in any single direction.
3Use of energy by moving object
If directional antennas are used to improve transmission efficiency, then power consumption is reduced, but system complexity increases due to antenna selection requirements
Solution Approach 1:
The flight control system performs multiple functions using the same antenna array: it manages propulsion control, navigation, and wireless communication all through a single integrated system. The antenna selection logic is integrated into the existing flight control architecture, avoiding the need for separate dedicated control systems and reducing overall complexity.
Solution Approach 2:
The system uses its own positional and orientational data from navigation sensors to automatically determine optimal antenna selection without requiring external input or complex manual configuration. The flight control system self-manages the antenna selection process based on real-time flight parameters and communication requirements.
Data Source
AI summary
Described herein are unmanned aerial vehicles (UAVs) and systems and methods for dynamically selecting directional antennas onboard the UAV for wireless transmissions. For example, an embodiment pertains to an aerial vehicle (e.g., a UAV) that includes a body, a plurality of rotor assemblies a plurality of rotor arms, each rotor arm having a proximal end structurally coupled to the body and a rotor assembly of the plurality of rotor assemblies structurally coupled to a distal end, a processor configured to at least identify an orientation and position of the aerial vehicle, and a switching apparatus configured to receive an input indicating at least the orientation and position of the aerial vehicle and, responsive to receiving the input, select one or more directional antennas on the aerial vehicle from which to communicate with.