Differential RF Receiver Layout for Environmental Noise Cancellation
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Solution Overview
Problem
Current radio communication antennas face challenges in achieving a high signal-to-noise ratio due to environmental noise interference, as existing methods like gradiometers are ineffective for traveling waves, leading to suboptimal signal detection and increased costs for limited transmission ranges.
Innovation Solution
A signal receiver device with two signal detection elements, one with a blocking member to attenuate communication signals, allowing for internal noise cancellation by differing signal intensities and phase differences, effectively separating communication signals from noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter with excellent skirt characteristics is designed to suppress interference signals, then signal-to-noise ratio is improved, but system cost increases
Solution Approach 1:
The antenna is segmented into two identical signal detection elements disposed in opposite directions. Each element detects signals independently, and the differential combination of these segmented detections cancels environmental noise while maintaining communication signals, achieving noise suppression without complex filters
Solution Approach 2:
The patent merges the functions of noise cancellation and signal detection into a single antenna structure by combining two signal detection elements with opposite directional characteristics. This integrated approach eliminates the need for separate complex filtering systems, reducing overall system cost while maintaining signal-to-noise ratio
2Measurement precision
If the transmission range is limited to reduce environmental noise interference, then signal-to-noise ratio is improved, but communication versatility deteriorates
Solution Approach 1:
The patent applies local quality by creating directional sensitivity in specific spatial directions. The two signal detection elements are configured with opposite directional characteristics, making the antenna selectively responsive to signals from particular directions while rejecting noise from other directions, thus extending effective transmission range without compromising signal-to-noise ratio
3Object-generated harmful factors
If a gradiometer is used to cancel environmental noise, then noise cancellation is improved, but applicability to radio communication deteriorates
Solution Approach 1:
The patent changes the operational parameters from the gradiometer's static magnetic field detection to dynamic radio frequency signal detection. By configuring two signal detection elements to operate at radio frequencies with opposite directional characteristics and combining their outputs differentially, the invention adapts the noise cancellation principle to radio communication applications
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 the signal-to-noise ratio by selectively attenuating communication signals, allowing for effective noise removal while maintaining signal integrity, thereby extending transmission ranges and improving reception quality.
Implementation Method 1
a first signal detection element; and a second signal detection element electrically connected to the first signal detection element
Implementation Method 2
provided with a blocking member for attenuating a communication signal among received RF signals
Implementation Method 3
The first signal detection element and the second signal detection element may be connected in series such that the first detection signal and the second detection signal are cancelled at least partially
Data Source
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AI summary
An exemplary embodiment provides a signal receiver device capable of detecting a radio communication signal with a high signal-to-noise ratio while internally canceling an environmental noise. A signal receiver device according to an exemplary embodiment includes a first signal detection element; and a second signal detection element electrically connected to the first signal detection element and provided with a blocking member for attenuating a communication signal among received RF signals. The signal receiver device is configured to output a difference between a first detection signal detected by the first signal detection element and a second detection signal detected by the second signal detection element as a detected receive signal.