AC Adapter Wireless Device Antenna Placement
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Solution Overview
Problem
Existing mobile hotspot devices lack the ability to bridge WiFi connections, provide LAN Ethernet connectivity, make voice calls via cellular networks, and require continuous battery charging for full-time usage, with a form factor that does not allow efficient antenna placement and size for improved data rates.
Innovation Solution
A fixed relocatable wireless device (FRWD) with a housing shaped like an AC adapter, containing circuitry and antennas for diversity reception, providing LAN Ethernet, WiFi, and cellular connectivity, powered by an off-line switched-mode power supply, allowing full-time usage without an external adapter, and enabling voice calls through a Bluetooth interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If mobile hotspot devices use a battery for portability, then they can be moved and used anywhere, but they require continual charging which limits full-time usage
Solution Approach 1:
The device is segmented into two operational modes: portable battery-powered mode for mobility and fixed AC-powered mode for continuous operation. The housing includes both a battery compartment and an AC adapter interface, allowing the device to be divided between these two power sources based on usage needs.
Solution Approach 2:
The device is designed with multi-functionality to operate in both portable and fixed modes. It includes a rechargeable battery for portability and an AC adapter interface for continuous operation, making it universal enough to handle both mobile and stationary applications without requiring separate devices.
2Speed
If mobile hotspot devices use a compact form factor, then they are more portable, but they do not allow efficient antenna size and placement for improved data rates
Solution Approach 1:
The device transitions from a purely portable compact form to a dynamic form that can be fixed in place. When mounted on a surface or wall, the device can extend its antenna elements and use larger antenna structures that would be impractical in a completely portable device, thus adapting the physical configuration to the operational context.
Solution Approach 2:
The device utilizes three-dimensional space more effectively when in fixed mode. Antennas can be positioned in multiple dimensions and orientations when the device is mounted on a surface or wall, rather than being constrained to a compact handheld form factor, allowing for better signal reception and transmission.
3Adaptability or versatility
If known mobile hotspot devices lack LAN Ethernet connectivity, then they remain simple and portable, but they cannot provide wired connectivity for IP-based devices
Solution Approach 1:
The device merges multiple connectivity functions into a single unit: cellular modem, WiFi transceiver, Bluetooth transceiver, and LAN Ethernet port all coexist in one device. This consolidation provides diverse connectivity options without requiring multiple separate devices.
Solution Approach 2:
The device is designed as a universal connectivity hub that can connect to various types of networks and devices simultaneously. It supports cellular networks, WiFi networks, Bluetooth devices, and wired Ethernet devices, making it adaptable to diverse connectivity needs while maintaining a single integrated form factor.
Data Source
AI summary
A fixed relocatable wireless device (FRWD) (100) includes a self-contained communications system for providing full-time connectivity to the Internet and/or to Internet protocol (IP) addresses via a built-in wired and/or wireless interface. Once configured, the FRWD allows an external local device access to the Internet without drivers or additional software in the local device, and without an external computer. The FRWD includes an operating system and application software. The FRWD utilizes a cellular modem (830) as back-haul for connectivity to the Internet. The FRWD allows a voice call to be originated and/or terminated over cellular voice channels. The FRWD includes circuitry (800) and antennas (802 and 804) that are completely enclosed in a housing (110) shaped as an AC wall adapter.