RF Chip Antenna Formation via Series Wire Segmentation
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Solution Overview
Problem
The production of radiofrequency transmission-reception devices with antennas is costly and complex, and existing methods for manufacturing these devices often require interconnected power supply wires, making it difficult to associate multiple chips with an object efficiently.
Innovation Solution
A method involving microelectronic chips with recessed areas for wire connection, where conductive wires are used to form antennas without a power supply wire, allowing for the creation of a chain of radiofrequency devices that can be easily individualized and applied to objects, such as a pipe, using wire elements that can be cut to desired lengths for antenna formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional microelectronics techniques are used to produce antennas on electronic tags, then antenna functionality is achieved, but production cost increases and manufacturing complexity increases
Solution Approach 1:
The antenna is segmented from the chip structure, implemented as separate conductive wires or traces that can be independently formed and connected to the chip's antenna connection contacts. This allows the antenna to be manufactured using simpler, less costly techniques while maintaining functional requirements.
Solution Approach 2:
The patent introduces intermediary conductive elements (wires, traces, or conductive paste) that serve as mediators between the chip and the antenna structure. These intermediaries enable antenna formation using less precise, more cost-effective methods while still achieving the required electrical connection and antenna functionality.
2Adaptability or versatility
If multiple electronic tags are to be associated with the same object, then identification capability is improved, but individual attachment complexity increases
Solution Approach 1:
The chip structure is designed with universal antenna connection contacts that can accommodate multiple antenna configurations and support association with multiple tags. The standardized interface allows various antenna types and multiple tags to be attached to the same object without increasing attachment complexity.
3Ease of manufacture
If conductive wire elements are used to connect chips, then antenna formation is enabled, but power supply wire requirements increase device complexity
Solution Approach 1:
The conductive wire elements are designed to serve dual functions: forming the antenna structure and providing electrical connection to the chip. This multi-functionality eliminates the need for separate power supply wires, reducing device complexity while maintaining ease of manufacture.
Solution Approach 2:
The antenna formation function and power supply connection function are merged into a single conductive wire element. This consolidation simplifies the overall device structure by eliminating redundant components while maintaining both antenna functionality and electrical connection capabilities.
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
This approach reduces production costs, simplifies the manufacturing process, and enables the efficient association of multiple radiofrequency chips on an object, preserving the chain structure until final assembly, while allowing for flexible antenna design and frequency adjustment.
Implementation Method 1
radiofrequency transmission-reception devices, a radio frequency transmission-reception device chain and a pipe comprising a chain of radio frequency transmission-reception devices
Implementation Method 2
the inductive elements L1 and L2 are respectively in series and in parallel with the capacitive elements C1 and C2 (shown in dotted lines) with which they form oscillating circuits, generally tuned to a central frequency of an operating frequency band
Data Source
Figure 1~3
Figure 4A~5B
Figure 6~7B
AI summary
The invention relates to the fabrication of radiofrequency transmission/reception devices (2). The invention makes provision for: the making of radiofrequency transmission/reception chips devoid of antennas; the connecting in series of the chips by at least two conducting wire elements whose respective lengths between two neighbouring chips are chosen as a function of the transmission/reception frequency, each element contacting electrically at least one terminal of a chip (3) and ensuring an at least temporary function of mechanical holding of the chips chainwise; and the cutting at regular intervals of the serial connection to form, for each chip, two strands (41', 42') of an antenna of the device.