Proximity Sensor Antenna Device Multi-Function Conductor
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Solution Overview
Problem
Conventional antenna devices with proximity sensors have complex constructions that lead to interference between detecting and radiating functions, increasing volume and cost, and fail to effectively reduce radiation exposure to users.
Innovation Solution
A proximity sensor antenna device with a coplanar arrangement of first and second conductors, where the second conductor can selectively function as a radiator or capacitance electrode, and includes a capacitance member and inductance member connected to the second conductor to prevent interference between detecting and RF signals, allowing the proximity sensor module to operate independently of the signal feeding and grounding wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional antenna device uses multiple P-sensors or multiple capacitance members with multiple conductive layers to achieve detection function, then the detection capability is improved, but the device complexity increases
Solution Approach 1:
The second conductor is designed to perform multiple functions: it serves as both a capacitance member for proximity detection and as a radiating element for RF signal transmission. This multi-functional design eliminates the need for separate P-sensors and multiple conductive layers, thereby reducing device complexity while maintaining detection capability
Solution Approach 2:
The invention merges the detection function and radiation function into a single integrated structure where the second conductor simultaneously acts as both the capacitance member and the antenna radiating element, simplifying the overall construction by combining previously separate components
2Measurement precision
If multiple P-sensors or capacitance members are used in conventional antenna devices, then detection function is achieved, but the volume of the device increases
Solution Approach 1:
The second conductor serves dual purposes as both detection element and radiating element, eliminating the need for separate P-sensors and reducing the overall device volume while maintaining full detection functionality
Solution Approach 2:
By merging the detection and radiation functions into the same conductor structure, the device volume is reduced as overlapping components are eliminated, achieving a more compact design
3Measurement precision
If multiple conductive layers and capacitance members are used in conventional antenna devices, then detection capability is improved, but the cost of manufacture increases
Solution Approach 1:
The second conductor performs both detection and radiation functions, eliminating the need for multiple separate capacitance members and conductive layers, thereby reducing material costs and simplifying manufacturing processes
Solution Approach 2:
The integration of detection and radiation functions into a single conductor structure reduces the total number of components that need to be manufactured and assembled, lowering overall manufacturing cost
4Measurement precision
If conventional antenna devices use separate P-sensors and conductive layers, then detection function is achieved, but signal interference between detecting and radiating functions occurs
Solution Approach 1:
The second conductor serves as both capacitance member and radiating element, creating a unified structure that inherently coordinates the detection and radiation functions, thereby preventing signal interference that plagues separate-component designs
Solution Approach 2:
By merging detection and radiation functions into the same conductor, the patent eliminates the signal interference problem that arises from having separate P-sensors and conductive layers operating in close proximity
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 configuration reduces volume and cost while preventing signal interference, enabling effective detection of external objects and reducing near-field electromagnetic radiation, ensuring compliance with radiation standards by adjusting radiation intensity based on object proximity.
Implementation Method 1
an inductance member electrically connected to the second conductor, wherein the inductance member is configured to block a radiofrequency signal traveling in the detecting segment when the detecting segment is in the coupling antenna mode
Implementation Method 2
a capacitance member electrically connected to the grounding segment of the second conductor, wherein the capacitance member is configured to block a detecting signal traveling in the detecting segment when the detecting segment is in the capacitance electrode mode
Implementation Method 3
when the detecting segment is in the capacitance electrode mode, the detecting segment is configured to detect an external object, and a capacitance value between the detecting segment and the external object is variable according to a distance between the detecting segment and the external object
Implementation Method 4
a first conductor having a feeding segment for receiving a signal and a radiating segment connected to the feeding segment
Data Source
AI summary
A P-sensor device includes an antenna structure and a P-sensor module. The antenna structure includes a first conductor, a second conductor, a capacitance member, and an inductance member. The capacitance member and inductance member are electrically connected to the second conductor. When the second conductor is in a capacitance electrode mode, a capacitance value between the second conductor and an external object is variable, and the capacitance member is configured to block a detecting signal, which travels in the second conductor. When the second conductor is in a coupling antenna mode, the inductance member is configured to block a RF signal, which travels in the second conductor. The P-sensor module is electrically connected to the inductance member and is electrically connected to the second conductor via the inductance member.