Passive Antenna Repeater for RF Signal Null Spot Correction
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Solution Overview
Problem
Despite efforts to provide seamless wireless communication coverage, areas with weak signal strength, known as null spots or dead spots, persist due to structural interference and material composition in urban environments, which attenuate radio frequency signals, making reliable wireless communication impossible.
Innovation Solution
A passive antenna repeater system with an electromagnetically reflective layer and dielectric layers, featuring folded dipole antennas and coupling elements, is designed to enhance RF signal strength within and around structures by coupling RF signals from areas of higher intensity into areas of lower intensity, effectively increasing signal coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If structures such as buildings and vehicles are used for shelter and protection, then safety and stability are improved, but RF signal strength deteriorates due to shielding and attenuation effects
Solution Approach 1:
The patent introduces a passive repeater system as an intermediary device that receives RF signals from the external environment and retransmits them inside the structure. The repeater includes antennas for receiving and transmitting signals, and a resonant circuit for signal amplification, acting as a mediator between the external RF field and the interior space to overcome the shielding effect of the structure.
Solution Approach 2:
The repeater system employs composite construction with conductive elements (antennas, resonant circuits) integrated with dielectric materials and reflective surfaces. This composite structure enables the device to effectively capture, resonate, and retransmit RF signals while maintaining a compact form factor that can be deployed within structural constraints.
2Illumination intensity
If passive repeater systems are deployed to improve signal coverage, then RF signal strength is improved, but device complexity increases due to multiple antenna arrangements and resonant structures
Solution Approach 1:
The patent combines multiple functional elements into an integrated passive repeater unit: receiving antennas, transmitting antennas, resonant circuits, and reflective surfaces are merged into a single coordinated system. The first and second antennas work together with their respective resonant circuits to create a unified signal amplification and retransmission mechanism, reducing the need for separate discrete components.
Solution Approach 2:
The patent utilizes spatial arrangement and geometric configuration of antennas and reflectors in three-dimensional space to achieve signal enhancement. The antennas are positioned at specific orientations and distances from reflective surfaces, leveraging spatial dimensionality to create constructive interference patterns and extend signal coverage without proportionally increasing device complexity.
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 system significantly increases RF signal intensity in areas with weak coverage, enabling reliable wireless communication by amplifying signal energy within a short range and potentially extending over larger distances, thereby addressing the issue of null spots.
Implementation Method 1
an electromagnetically reflective layer plane, the electromagnetically reflective layer having first and second faces
Implementation Method 2
a first dielectric layer disposed on the first face of the electromagnetically reflective layer
Implementation Method 3
a first resonator including a first antenna having a respective feed point, a second antenna having a respective feed point
Data Source
AI summary
Some embodiments provide a relatively small antenna apparatus that acts as a passive repeater. The antenna apparatus can be designed to facilitate radio frequency (RF) signal gain for a collection or range of frequencies. In some embodiments, the antenna apparatus is placed near a device with a wireless receiver and/or transmitter, where the antenna apparatus causes increased RF signal intensity at the device by coupling RF signals from a proximate area of higher RF signal intensity into the area around the device. Accordingly, in some instances, an embodiment of the antenna apparatus can be used to increase the RF signal intensity in a null spot or dead spot by coupling RF signal energy from an area proximate to the null spot that has higher RF signal intensity.