RFID Reader Port Layout for High-Density Antenna Multiplexing

Solution Overview

Problem

Existing RFID systems face challenges in connecting a large number of RFID antennas to a reader without increasing cost and material quantity, as conventional connectors and external multiplexing methods are expensive and space-constrained.

Innovation Solution

Implementing 8-position/8-contact (8P8C) connectors and twisted wire pair cabling within the RFID reader, allowing for internal multiplexing that supports a higher connection density without increasing the reader's size, using RJ45 connectors and CAT6 cables to connect multiple antennas and load devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional connectors and external multiplexing methods are used to connect RFID antennas, then the system can communicate with RFID signals, but the cost and quantity of materials rapidly rise and the reader size increases

Engineering Contradiction:

Improvenumber of RFID antennas connectableVSAvoidquantity of materials

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent merges multiple antenna ports into a single connector by integrating an internal multiplexer that combines signals from multiple antennas through one connector interface. This allows four RFID antennas to be connected through a single connector, reducing the total number of connectors and cables needed while maintaining the ability to communicate with multiple RFID signals simultaneously.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The connector is designed with multi-functionality by incorporating an internal multiplexer that enables a single connector to handle multiple antenna ports. The connector can simultaneously support communication with four different RFID antennas, making it a universal interface that replaces multiple separate connectors.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If conventional connectors are used to connect RFID antennas, then the system can communicate with RFID signals, but the reader size increases

Engineering Contradiction:

Improvenumber of RFID antennas connectableVSAvoidreader size

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent merges multiple antenna ports into a single connector by integrating an internal multiplexer that combines signals from multiple antennas through one connector interface. This allows four RFID antennas to be connected through a single connector, reducing the total number of connectors and cables needed while maintaining the ability to communicate with multiple RFID signals simultaneously.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If more connectors are added to increase the number of antenna ports, then more RFID antennas can be connected, but the porting area increases

Engineering Contradiction:

Improvenumber of antenna portsVSAvoidporting area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

The patent merges multiple antenna ports into a single connector by integrating an internal multiplexer that combines signals from multiple antennas through one connector interface. This allows four RFID antennas to be connected through a single connector, reducing the total number of connectors and cables needed while maintaining the ability to communicate with multiple RFID signals simultaneously.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent transitions from a two-dimensional arrangement of multiple separate connectors to a three-dimensional integrated structure where an internal multiplexer combines multiple antenna ports within a single connector. This dimensional change allows multiple antenna ports to be packed into a smaller footprint by utilizing the internal volume of the connector housing.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20260050756A1Porting Configuration for High Density Multiplexing of RFID Readers

Publication Date: 2026.02.19 ZEBRA TECHNOLOGIES CORP

AI summary

Porting configurations for high density multiplexing of RFID readers are disclosed herein. An example RFID reader includes a housing, a printed circuit board (PCB) disposed within the housing, an internal multiplexer disposed within the housing, and electrically connected to the PCB; and a plurality of connectors disposed in a porting area of the housing, each of the plurality of connectors comprising a plurality of antenna ports, wherein each antenna port is communicatively coupled to the PCB via the internal multiplexer and is connectable with a respective RFID antenna.