Mobile Barcode Reader NFC Booster Coil for Front-Side Card Reading
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Solution Overview
Problem
Conventional mobile computers with NFC antennas do not provide an optimal user experience for credit card payment applications, as users prefer to place the card on the front/top side rather than the back side, where the NFC antennas are typically located.
Innovation Solution
Incorporating a secondary NFC antenna oriented transversely to the primary NFC antenna, which is not electrically coupled but wirelessly coupled to enhance NFC reading capabilities, particularly for front-side card placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the NFC antenna is disposed on the battery pack or back side of the mobile computer, then the device structure is simple and manufacturing is easy, but the user experience for credit card payment is poor as users prefer to place cards on the front side
Solution Approach 1:
The NFC antenna system is divided into two independent parts: a primary NFC antenna disposed in the back plane and a secondary NFC antenna disposed in the front plane. Each antenna operates independently with its own transceiver circuit, allowing the system to provide NFC functionality at both the back and front of the device without requiring a single complex antenna structure
Solution Approach 2:
The patent extends the NFC antenna system from a single-plane configuration to a multi-plane configuration by adding a secondary antenna in the front plane. This dimensional expansion allows NFC cards to be read from both front and back sides of the device, effectively adding spatial dimensionality to the NFC reading capability
2Adaptability or versatility
If a secondary NFC antenna is added to the front portion of the device, then NFC reading capability on the front side is improved, but the device complexity increases
Solution Approach 1:
The NFC system is segmented into independent primary and secondary antenna units, each with its own transceiver circuit. This segmentation allows each antenna to be optimized for its specific location (front or back) and operated independently, providing versatile NFC reading capability without requiring a single overly complex integrated antenna system
Solution Approach 2:
The dual-antenna configuration provides universal NFC reading capability that works for cards placed on either the front or back of the device. The system can adapt to different card placement preferences and orientations, making the NFC functionality more versatile and universally applicable to various payment scenarios
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 NFC reading range and usability by allowing card reading on the front side of the device, improving user experience and NFC performance without increasing complexity or cost.
Implementation Method 1
a primary NFC antenna disposed in a first plane extending in a longitudinal direction of the housing, the primary NFC antenna operably coupled with electronics of the mobile barcode reader to facilitate NFC reading
Implementation Method 2
a secondary NFC antenna disposed proximate the front portion and extending in a second plane that is transverse to the longitudinal of the housing, the secondary NFC antenna configured as a boosting antenna for the primary NFC antenna without being electrically coupled with the electronics of the mobile barcode reader
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
A mobile barcode reader may include a housing having a defined exit window, a scan engine, a primary NFC antenna, and a secondary NFC antenna. The scan engine may be configured to read barcodes and positioned within a front portion of the housing with one or more imagers having a field-of-view extending out of the exit window. The primary NFC antenna may be disposed in a first plane extending in a longitudinal direction of the housing, the primary NFC antenna operably coupled with electronics of the mobile barcode reader to facilitate NFC reading. The secondary NFC antenna may be disposed proximate the front portion and extending in a second plane transverse to the longitudinal of the housing, and configured as a boosting antenna for the primary NFC antenna without being electrically coupled with the electronics of the mobile barcode reader. Related methods of operating and manufacturing are also disclosed.