Combined Antenna Integrating Induction Substrate as Radiation Ground
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Solution Overview
Problem
Conventional electronic devices with electromagnetic radiation type antennas require a reference ground portion on the PCB substrate, increasing the device's volume due to the need for a clearance area to prevent interference, which limits the antenna's dimension and flexibility in arrangement.
Innovation Solution
A combined antenna design incorporating both electromagnetic induction and radiation types, where the substrate of the electromagnetic induction antenna serves as the reference ground for the radiation type, eliminating the need for a separate reference ground on the PCB substrate and allowing for a more flexible arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reference ground portion is printed on the PCB substrate for the electromagnetic radiation type antenna, then the antenna can function properly, but the dimension of the PCB substrate is increased due to the required clearance area
Solution Approach 1:
The patent merges the reference ground portion with the electromagnetic induction type antenna substrate, creating a combined antenna structure. The substrate of the induction antenna serves dual purposes: as the induction antenna's own ground and as the reference ground for the radiation antenna, eliminating the need for a separate clearance area on the PCB substrate.
Solution Approach 2:
The substrate of the electromagnetic induction type antenna is designed to serve multiple functions: it acts as the ground for the induction antenna itself and simultaneously serves as the reference ground portion for the electromagnetic radiation type antenna. This multi-functionality reduces the overall PCB substrate area required.
2Object-affected harmful factors
If a clearance area is provided on the PCB substrate to prevent copper interference, then interference to the electromagnetic radiation antenna is prevented, but the device volume is increased
Solution Approach 1:
The patent combines the induction antenna and radiation antenna into a single integrated structure where the induction antenna's substrate serves as the radiation antenna's ground. This merging eliminates the need for separate clearance areas that would otherwise be required to prevent copper interference, thereby reducing device volume.
3Reliability
If the reference ground portion is printed on the PCB substrate, then the electromagnetic radiation antenna can be implemented, but the arrangement flexibility of the antenna is reduced
Solution Approach 1:
The patent creates a combined antenna module where the induction antenna and radiation antenna are integrated. This merged structure can be treated as a single unit for placement on the PCB substrate, significantly improving arrangement flexibility compared to having separate ground requirements for each antenna type.
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 reduces the overall dimension of the PCB substrate and enhances the flexibility of antenna placement by integrating the antennas as a single module connected via a conducting wire, addressing the issue of increased volume and interference.
Implementation Method 1
the NFC antenna and the wireless charging antenna belong to application of electromagnetic induction
Implementation Method 2
the Bluetooth antenna belongs to application of electromagnetic radiation
Data Source
AI summary
Embodiments of this application provide a combine antenna and an electronic device. The combined antenna includes a first antenna of an electromagnetic induction type and a second antenna of an electromagnetic radiation type. The first antenna includes a substrate having an electrical conductivity with a body portion of the second antenna connected to the substrate of the first antenna, the substrate serving as a reference ground portion of the second antenna.