RF Phased-Array Antenna Layout for Compact Drone Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Radar arrays used for drone detection are bulky and expensive, and they struggle to detect autonomous drones effectively.
Innovation Solution
A phased-array detector with vertical and horizontal antennas, including a frontend module, multiplexer module, filter module, and processor, capable of determining the location of radio-emitting sources by processing signals from both types of antennas, and utilizing beamforming to detect and track drones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional radar arrays are used for drone detection, then detection capability is achieved, but device size becomes bulky and cost increases
Solution Approach 1:
The patent replaces traditional mechanical radar arrays with an RF phased-array detector that uses electromagnetic signal processing. The system substitutes physical radar infrastructure with electronic beamforming capabilities, achieving drone detection through signal phase and amplitude manipulation rather than mechanical scanning, thereby reducing device size while maintaining detection effectiveness
Solution Approach 2:
The patent changes the operational parameters by using RF signals in specific frequency ranges and implementing electronic phase shifting across multiple antenna elements. By adjusting phase and amplitude parameters of individual antenna signals, the system achieves beamforming capability without requiring large physical antenna arrays, thus reducing detector size while preserving detection capability
2Reliability
If traditional radar arrays are used for drone detection, then detection capability is achieved, but manufacturing cost increases
Solution Approach 1:
The RF phased-array detector is designed with multi-functionality, capable of performing drone detection, signal direction finding, and beamforming operations using a single integrated system. This universal approach eliminates the need for separate specialized radar equipment, reducing overall manufacturing cost while maintaining detection capability
Solution Approach 2:
The patent uses multiple identical antenna elements arranged in a phased array configuration rather than a single complex radar antenna. By replicating simple, standardized antenna units and processing their signals through electronic beamforming, the system achieves detection capability with lower per-unit costs and easier manufacturing compared to traditional radar arrays
3Ease of operation
If autonomous drones operate, then mobility and autonomy are improved, but detectability by traditional systems decreases
Solution Approach 1:
The RF phased-array detector implements feedback mechanisms by continuously monitoring RF signals and adjusting beamforming parameters in real-time. The system processes phase and amplitude information from multiple antenna elements to dynamically track and identify autonomous drone signals, maintaining high detection accuracy despite drone mobility and autonomous operation
Solution Approach 2:
The patent employs dynamic beamforming capabilities that allow the detector to electronically steer and adjust radiation patterns in real-time. This dynamic adaptation enables the system to track autonomous drones as they move, maintaining detection accuracy without requiring physical repositioning of the detector, thus countering the reduced detectability caused by drone autonomy
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
The phased-array detector provides efficient and accurate detection of drone locations, enabling effective counter-drone technology without the bulkiness and high cost of traditional radar arrays.
Implementation Method 1
A phased array system can utilize beamforming and beamsteering techniques to form and steer the radiation pattern in various directions
Implementation Method 2
The radiation pattern is electronically steered according to the phase difference between the radiated signals
Implementation Method 3
The phased array system can intelligently combine a number of individual antennas to achieve improved signal strength, gain and directivity
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
A radio frequency (RF) phased-array detector includes a vertical antenna array, a horizontal antenna array, a multiplexer module and a processor. The vertical antenna array includes a plurality of vertical antennas, and each of the vertical antennas is configured to obtain a first input signal in response to a wireless signal from a radio-emitting source. The horizontal antenna array includes a plurality of horizontal antennas, and each of the horizontal antennas is configured to obtain a second input signal in response to the wireless signal. The multiplexer module is configured to provide a set of third input signals selected from the first input signals and the second input signals. The processor is configured to obtain azimuth and elevation of the radio-emitting source according to the set of third input signals.