Memory Card Antenna Protrusion for Wireless Signal Transmission
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Solution Overview
Problem
The existing memory cards in cameras face challenges with wireless communication due to the antenna being obstructed by the camera's metallic case and electronic circuitry, leading to limited transmission accuracy and range.
Innovation Solution
A memory card with a built-in antenna designed to protrude outside the camera body, featuring an inverse L-shaped antenna element and ground element on a printed-wiring board, optimized for 2.4 GHz to 2.5 GHz frequency range, allowing for improved wireless communication performance even when enclosed within the camera's casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the antenna is installed inside the camera body along with the memory card, then the wireless communication function is integrated into the camera system, but the antenna is obstructed by the metallic case and electronic circuitry which degrades wireless communication performance
Solution Approach 1:
The invention separates the antenna from the main camera body by placing it on the memory card itself. This segmentation allows the antenna to be positioned outside the metallic case while maintaining system integration, thereby resolving the contradiction between integration and communication performance.
Solution Approach 2:
The memory card acts as an intermediary carrier that holds the antenna. By using the memory card as a mediator between the camera system and the antenna, the invention achieves both system integration and optimal antenna positioning outside the metallic obstruction zone.
2Volume of moving object
If the antenna is placed inside the camera body surrounded by metallic case and conductive portions, then the camera structure remains compact, but the transmission accuracy and spatial coverage are limited
Solution Approach 1:
The antenna is extracted from the camera body interior and relocated to the memory card. This extraction removes the antenna from the obstructive metallic environment while keeping the camera body compact, thus improving transmission accuracy without increasing camera volume.
Solution Approach 2:
The antenna is positioned in a different spatial dimension (outside the camera body on the memory card) rather than within the constrained three-dimensional space of the camera interior. This dimensional change allows the antenna to operate in a less obstructed environment, improving wireless transmission performance.
3Shape
If the antenna is enclosed within the camera case, then the camera maintains a sleek external appearance, but the wireless signal transmission is blocked or weakened
Solution Approach 1:
The antenna is extracted from the camera case enclosure and placed on the memory card. This extraction eliminates the signal blockage caused by the metallic case while preserving the camera's external appearance, as the antenna is now outside the case structure.
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
Enhances wireless communication performance by ensuring the antenna elements protrude sufficiently to transmit information effectively, overcoming the limitations of the camera's internal obstructions and maintaining consistent VSWR characteristics across different digital camera types.
Implementation Method 1
an antenna for wireless communication may be installed inside the camera... information may be wirelessly transmitted to and stored in a large capacity recording medium provided outside the camera
Data Source
AI summary
A disclosed memory card having a built-in antenna and being connected to an electronic apparatus includes a circuit board configured to be covered by a case, an antenna element formed on one surface of the circuit board or on one surface of a board mounted on the circuit board, and a ground element formed on another surface of the circuit board or on another surface of the board mounted on the circuit board, wherein a part or all of the antenna element and a part or all of the ground element are formed to protrude outside the electronic apparatus when the memory card is connected to the electronic apparatus.