Modular RFID Reader Assembly for Four- and Eight-Port Configurations
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Solution Overview
Problem
Current RFID readers with four and eight antenna ports face inefficiencies in size and design, with the larger eight antenna port option unnecessarily increasing the size of the four antenna port option, and separate housings for different port options are cost-prohibitive.
Innovation Solution
A configurable RFID reader assembly comprising a base unit with an expansion interface that allows attachment of RFID reader accessories such as a multiplexer, RFID antenna, or cosmetic plate, enabling reconfiguration from four to eight antenna ports without significantly increasing size, using a smaller base unit and various accessories to maintain a consistent appearance and simplify installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the eight antenna port option is used as the design point for both four and eight antenna port RFID readers, then the versatility and future-proofing of the product is improved, but the size of the four antenna port option is significantly increased, making it too large for its intended application
Solution Approach 1:
The patent divides the antenna port functionality into two separate physical configurations: a compact four-antenna-port base unit and a separate four-antenna-port multiplexer module. This segmentation allows the base unit to maintain a small footprint while the multiplexer provides additional ports when needed, resolving the contradiction between versatility and size.
Solution Approach 2:
The patent introduces an external multiplexer module as an intermediary component that connects to the base unit via a connector. This intermediary provides the additional antenna ports without being integrated into the base unit's enclosure, allowing the base unit to remain compact while still achieving eight-antenna-port capability when the multiplexer is attached.
2Area of stationary object
If separate sets of housings with different sizes are created for four and eight antenna port designs, then the size optimization for each configuration is achieved, but the tooling cost and development complexity become cost-prohibitive
Solution Approach 1:
The patent creates a universal base unit design that serves both four-antenna-port and eight-antenna-port applications. The base unit includes a connector interface that can accommodate either a direct four-antenna configuration or a four-antenna multiplexer module, eliminating the need for separate housings and reducing tooling requirements.
Solution Approach 2:
The patent implements a dynamic configuration system where the antenna port capability can be changed by attaching or removing the multiplexer module. This dynamic approach allows a single base unit design to adapt to different port requirements without requiring separate manufactured housings, reducing manufacturing complexity.
3Adaptability or versatility
If four of the eight antenna ports are removed from the RFID reader's enclosure to create the four antenna port option, then the port configuration is reduced as needed, but empty space is created horizontally and the design becomes inefficiently sized
Solution Approach 1:
The patent extracts the additional antenna port functionality from the base unit's enclosure by using a separate, attachable multiplexer module. This allows the base unit to have a compact, efficient shape optimized for four ports, while the multiplexer provides additional ports when needed without affecting the base unit's dimensional efficiency.
Data Source
AI summary
An example configurable radio-frequency identification (RFID) reader assembly includes a base unit and an integrable multiplexer. The base unit includes a first housing, a printed circuit board (PCB), an internal multiplexer, a first plurality of antenna ports accessible from outside the first housing, and a first radio-frequency (RF) connector accessible from outside the first housing. The integrable multiplexer is attached to the first housing and includes a second housing that is attachable to and removable from the first housing from outside the first housing, a second plurality of antenna ports accessible from outside of the second housing, and a second RF connector accessible from outside the integrable multiplexer housing and connected to the first RF connector.