RF Antenna Radiating Body as Capacitance Electrode
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Solution Overview
Problem
Conventional RF antenna structures require a capacitance member between the radiating body and ground, which affects RF radiating efficiency, increases costs, and complicates manufacturing, while also needing a proximity sensor to reduce radiation exposure to users.
Innovation Solution
The RF antenna device incorporates a supporting frame, grounding conductor with first and second coupling segments, an insulating adhesive layer, radiating body, and a high-frequency blocking unit, eliminating the need for a capacitance member by using the radiating body as a capacitance electrode and integrating a proximity sensor with a high-frequency blocking unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a capacitance member is arranged between the radiating body and ground in conventional antenna structures, then the radiating body can be used as a capacitance electrode for the proximity sensor, but the RF radiating efficiency is influenced, cost increases, and manufacturing process becomes complicated
Solution Approach 1:
The patent removes the separate capacitance member from the antenna structure. Instead, the radiating body itself is configured to serve as the capacitance electrode for the proximity sensor, eliminating the need for an additional capacitance component while maintaining the proximity sensing function.
Solution Approach 2:
The radiating body is designed to perform multiple functions simultaneously: it serves as both the RF radiating element and the capacitance electrode for the proximity sensor. This multi-functional design eliminates the need for separate components and reduces overall device complexity.
2Reliability
If a capacitance member is arranged between the radiating body and ground, then the radiating body can be used as a capacitance electrode for the proximity sensor, but the cost of the antenna structure increases
Solution Approach 1:
The patent removes the separate capacitance member from the antenna structure. Instead, the radiating body itself is configured to serve as the capacitance electrode for the proximity sensor, eliminating the need for an additional capacitance component while maintaining the proximity sensing function.
Solution Approach 2:
The radiating body is designed to perform multiple functions simultaneously: it serves as both the RF radiating element and the capacitance electrode for the proximity sensor. This multi-functional design eliminates the need for separate components and reduces overall device complexity.
3Reliability
If a capacitance member is arranged between the radiating body and ground, then the radiating body can be used as a capacitance electrode for the proximity sensor, but the manufacturing process becomes complicated
Solution Approach 1:
The patent removes the separate capacitance member from the antenna structure. Instead, the radiating body itself is configured to serve as the capacitance electrode for the proximity sensor, eliminating the need for an additional capacitance component while maintaining the proximity sensing function.
Solution Approach 2:
The radiating body is designed to perform multiple functions simultaneously: it serves as both the RF radiating element and the capacitance electrode for the proximity sensor. This multi-functional design eliminates the need for separate components and reduces overall device complexity.
4Object-affected harmful factors
If the radiating body is used as a capacitance electrode for detecting external objects, then radiation exposure to users can be reduced, but RF radiating efficiency is influenced
Solution Approach 1:
The radiating body is designed to perform multiple functions simultaneously: it serves as both the RF radiating element and the capacitance electrode for the proximity sensor. This multi-functional design eliminates the need for separate components and reduces overall device complexity.
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 design enhances RF radiating efficiency, reduces costs, simplifies manufacturing, and effectively reduces radiation exposure by varying capacitance based on object distance, ensuring compliance with radiation standards.
Implementation Method 1
a capacitance value between the radiating body and the external object is variable according to a distance between the radiating body and the external object
Implementation Method 2
The high-frequency blocking unit is disposed on the carrier and is electrically connected to the first coupling segment
Data Source
AI summary
A radiofrequency antenna device includes a carrier, an antenna structure, a high-frequency blocking unit, and a proximity sensor (P-sensor), which are disposed on the carrier. The antenna structure includes a supporting frame disposed on the carrier, a first coupling segment disposed on the supporting frame, a second coupling segment disposed on the carrier, an insulating adhesive layer connected between the first and the second coupling segments, a radiating body disposed on the supporting frame and connected to the first coupling segment, and a feeding conductor disposed on the supporting frame. The feeding conductor is configured to transmit a signal to the radiating body. The high-frequency blocking unit is electrically connected to the first coupling segment. The P-sensor is electrically connected to the high-frequency blocking unit, and the P-sensor is electrically connected to the first coupling segment and the radiating body through the high-frequency blocking unit.