Rim-and-Spoke RF Absorption Module for AESA Radar Interference
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Solution Overview
Problem
Active Electronically Scanned Array (AESA) radar systems face performance degradation due to interference signals generated when transmitting multiple RF signals simultaneously.
Innovation Solution
An RF signal absorption module comprising first conductor patterns in a rim shape, second conductor patterns in a spoke shape, and resistors connected between them, mounted on a radar panel to absorb interference signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If AESA radar transmits multiple RF signals simultaneously to improve radar performance and coverage, then radar capability is enhanced, but interference signals are generated that degrade performance
Solution Approach 1:
The patent applies the principle of converting harmful interference signals into beneficial absorbed energy. The RF signal absorption module uses resistor elements connected to conductor patterns to transform the harmful interference signals into heat energy through resistive heating, effectively eliminating the interference while maintaining the radar's multi-signal transmission capability
Solution Approach 2:
The patent introduces an intermediary RF signal absorption module between the interfering RF signals and the radar receiving system. This module acts as a mediator that selectively absorbs interference signals at specific frequencies while allowing desired radar signals to pass through, resolving the contradiction between maintaining transmission capability and eliminating interference
2Object-affected harmful factors
If RF signal absorption module uses more resistor elements to improve interference absorption, then absorption effectiveness increases, but device complexity and cost increase
Solution Approach 1:
The patent divides the RF signal absorption module into multiple unit cells, each containing conductor patterns and resistor elements. This segmentation allows the interference absorption function to be distributed across multiple identical modular units, improving absorption effectiveness through increased surface area while maintaining manageable device complexity through standardization
Solution Approach 2:
The patent implements local quality by positioning resistor elements at specific locations where interference signals are most problematic. The conductor patterns are strategically designed to concentrate electromagnetic energy at resistor locations, ensuring that absorption resources are allocated where they are most needed rather than uniformly distributed
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 module effectively absorbs interference signals, enhancing the performance of AESA radar by mitigating signal interference.
Implementation Method 1
resistors disposed to be connected between the second conductor patterns segmented in the middle
Data Source
AI summary
An RF signal absorption module mounted on a radar panel that simultaneously transmits a plurality of RF signals to absorb interference signals generated as the plurality of RF signals are transmitted simultaneously, where the RF signal absorption module comprises: first conductor patterns formed on a circuit board in a shape of a rim within a unit cell of a square shape, in which the rim shape is divided into a plurality of segments and disposed at equal intervals; second conductor patterns connected to the plurality of segmented first conductor patterns to be formed in a shape of a spoke, in which the spoke shape is disposed to be segmented in the middle; and resistors disposed to be connected between the second conductor patterns segmented in the middle.