Repeater Antenna in Protective Case for NFC Signal Extension
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Solution Overview
Problem
Mobile devices face limitations in battery life due to increased power consumption from advanced applications, and existing protective cases can interfere with short-range communication signals like NFC, reducing their effectiveness.
Innovation Solution
A mobile device peripheral that includes a protective case with a repeater antenna system, which can be powered by an external battery and features ferrite layers to enhance signal transmission and reduce interference, allowing for extended battery life and improved communication range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If an external battery pack is added to extend battery life, then the duration of action is improved, but the device complexity increases
Solution Approach 1:
The patent combines the protective case and external battery pack into a single integrated peripheral device. The protective case houses the battery pack, allowing users to protect their mobile device while extending battery life simultaneously, reducing the number of separate peripherals needed
Solution Approach 2:
The protective case is designed to serve multiple functions: it provides physical protection for the mobile device, houses an external battery pack for power extension, and incorporates a repeater antenna for signal enhancement. This multi-functional design reduces the need for separate devices
2Reliability
If a protective case is used to protect the mobile device, then the reliability is improved, but the short-range communication signal transmission deteriorates
Solution Approach 1:
The repeater antenna system acts as an intermediary between the mobile device antenna and the external communication environment. It receives signals from the mobile device, amplifies them, and retransmits them, overcoming the signal blocking effect of the protective case
Solution Approach 2:
The repeater antenna changes the signal parameters by amplifying the transmission power and adjusting the signal strength to compensate for the attenuation caused by the protective case material, thereby maintaining effective communication range
3Adaptability or versatility
If advanced applications are used to enhance device functionality, then the adaptability is improved, but the energy consumption increases
Solution Approach 1:
The external battery pack is pre-charged before use, storing energy in advance. This allows the mobile device to access additional power reserves when running advanced applications, extending the duration between charges and enabling longer usage of power-intensive features
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 solution extends the battery life of mobile devices and enhances the range and reliability of short-range communication signals, such as NFC, by using a repeater antenna system within a protective case that is powered by an external battery, addressing both power and communication limitations.
Implementation Method 1
a repeater antenna, which can be enclosed inside of the protective case... Both antennas can be contained in one device, but the two antennas can also be located in separate peripherals that are capable of electrical coupling. The second antenna can transmit a signal received by the first antenna
Implementation Method 2
there can be one or more ferrite layers between the first antenna and the second antenna. The ferrite layers can block interference between the two antennas
Data Source
AI summary
A mobile device peripheral that incorporates a repeater antenna inside of a protective case for a mobile device to extend the range of short-range communications while minimizing interference caused by the thickness or materials of the protective case. The repeater antenna can be capable of receiving a wireless signal from an antenna in the mobile device and transmitting the same signal or an amplified version of the same signal. The repeater antenna can be capable of receiving a wireless signal from an external antenna and transmitting the same signal or an amplified version of the same signal to the mobile device. The mobile device peripheral can also include a battery that provides additional power the mobile device. Without a repeater antenna, the materials and/or thickness of the additional battery and/or the case can partially or completely block a short-range, low-frequency, or low-power communication signal such as Near Field Communication (NFC).