Embedded Antenna Radiator Injection Molding Integration
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Solution Overview
Problem
Existing methods for integrating antennas into mobile communications terminals face issues with reliability and manufacturing costs, as well as aesthetic concerns, due to the use of adhesives for bonding flexible antennas and the complexity of bonding antenna films.
Innovation Solution
An electronic device case with an embedded antenna radiator, manufactured using injection molding, where the antenna pattern is formed on one side of the radiator frame and the connection terminal on the other, allowing for a secure and aesthetically pleasing integration without the need for protective films.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If flexible antennas are bonded using adhesives, then the antenna can be integrated into the terminal body, but the reliability decreases due to reduced adhesiveness and the appearance quality deteriorates
Solution Approach 1:
The patent merges the antenna with the terminal body by forming the antenna directly within the housing structure through injection molding, eliminating the need for separate bonding processes. The antenna and housing are created as a single integrated component, ensuring both reliability and appearance quality without relying on adhesives.
Solution Approach 2:
The housing structure serves multiple functions: it provides structural support, aesthetic appearance, and houses the antenna functionality. By integrating the antenna within the housing, the housing becomes a multi-functional component that combines structural and antenna roles, improving both reliability and manufacturing efficiency.
2Reliability
If antenna films are used to ensure product stability, then the antenna integration is achieved, but the manufacturing process becomes more difficult and costs increase
Solution Approach 1:
The patent combines the antenna formation process with the housing manufacturing process through injection molding. Instead of using separate antenna films that require additional bonding steps, the antenna is formed directly within the housing structure during the same manufacturing process, reducing complexity while maintaining product stability.
Solution Approach 2:
The injection molding process automatically forms the antenna structure within the housing without requiring external antenna films or additional assembly steps. The manufacturing process serves itself by creating both the housing and antenna in a single operation, eliminating the need for complex multi-step processes involving antenna films.
3Reliability
If external antennas are used, then the antenna functionality is provided, but the terminal is susceptible to damage by external shock
Solution Approach 1:
The patent embeds the antenna within the housing structure, creating a nested configuration where the antenna is protected inside the housing. This nested arrangement shields the antenna from external shocks and physical damage while maintaining its functionality, effectively resolving the vulnerability of external antennas.
4Volume of stationary object
If internal antennas are disposed inside terminals, then the terminal volume is reduced, but the antenna reliability may be compromised
Solution Approach 1:
The patent merges the antenna with the housing structure through direct formation during injection molding, creating an integrated internal antenna system. This approach maintains compact terminal volume while ensuring antenna reliability through the robust integrated construction, avoiding the weaknesses of both external and separately-bonded internal antennas.
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 solution enhances antenna reliability and durability, reduces manufacturing costs, and allows for a three-dimensional design, preventing loosening and improving connectivity to the circuit board.
Implementation Method 1
a radiator frame manufactured by injection molding on the radiator so that the antenna pattern portion of the radiator is provided on one side of the radiator frame and the connection terminal portion is provided on the other side thereof
Data Source
AI summary
An electronic device case having an antenna pattern embedded therein includes: a radiator having an antenna pattern portion transmitting and receiving a signal and a connection terminal portion allowing the signal to be transmitted to and received from a circuit board of an electronic device; a connection portion partially forming the radiator and connecting the antenna pattern portion and the connection terminal portion to be arranged in different planes; a radiator frame manufactured by injection molding on the radiator so that the antenna pattern portion of the radiator is provided on one side of the radiator frame and the connection terminal portion is provided on the other side thereof; and a case frame covering the one side of the radiator frame on which the antenna pattern portion is provided so that the antenna pattern portion is embedded between the case frame and the radiator frame.