Dual-Shot Antenna Assembly with Adjustable Impedance
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Solution Overview
Problem
Conventional internal antennas in wireless communication devices face challenges such as breakage, de-tuning due to user contact, aesthetic issues, and the need for costly redesigns to adjust electrical characteristics, with existing solutions like Korean Patent Registration No. 10-0756312 having difficulties in installing inductors and fixing other electric characteristics.
Innovation Solution
A dual-shot antenna forming technique involving a non-conductive plating-resistive carrier with voids, filled with a plating-friendly material, and surface-mounted devices (SMDs) to form a conductive pattern, allowing for adjustable impedance and resonance frequency without external tuning, enabling miniaturization and flexible design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional internal antenna design is used with fixed matching components, then manufacturing is simplified, but antenna electrical characteristics cannot be adjusted without redesign
Solution Approach 1:
The patent applies dynamics by making the antenna electrically tunable through variable capacitors and inductors that can be adjusted via control signals. The matching components are no longer fixed but can be dynamically changed to optimize antenna performance for different frequency bands and operating conditions, resolving the contradiction between adaptability and structural complexity.
Solution Approach 2:
The patent changes the electrical parameters of the antenna by incorporating variable capacitors and inductors whose values can be modified through control signals. This allows the resonance frequency, impedance, and other electrical characteristics to be adjusted without physical redesign, achieving adaptability while managing complexity through electronic control.
2Reliability
If external antenna is used to enhance transmission and reception, then radiation characteristics are improved, but the antenna is vulnerable to breakage and de-tuning
Solution Approach 1:
The patent merges the antenna with the internal housing or circuit board structure, creating an integrated internal antenna design. This combination provides the mechanical protection and durability of an internal structure while maintaining the radiation functionality of an antenna, resolving the contradiction between reliability and ease of operation.
3Manufacturing precision
If matching components are added to adjust impedance, then antenna electrical characteristics are optimized, but the antenna requires retuning for different system conditions
Solution Approach 1:
The patent uses variable capacitors and inductors that can be electronically adjusted to optimize antenna characteristics for different system conditions. The control system dynamically tunes the matching components based on operating requirements, achieving both manufacturing precision and adaptability for various system configurations.
Solution Approach 2:
The patent incorporates feedback mechanisms where the antenna system monitors its own performance and automatically adjusts the variable matching components to maintain optimal electrical characteristics. This feedback loop ensures precise antenna operation across different system conditions without manual retuning.
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
The method allows for compact antenna design, independent PCB manufacturing, and adjustable electrical characteristics, reducing the need for special tuning and maintaining performance across various conditions and locations.
Implementation Method 1
plating a conductive material on the plating-friendly material to form one or more conductive portions along the conductor pattern of the carrier
Data Source
AI summary
An antenna module and a manufacturing method for the same are disclosed. With the miniaturization trend for mobile communication terminals, the invention can achieve the miniaturization of antenna modules and facilitate the design of the antenna. The SMD as a matching component for given resonance frequency and impedance matching of the antenna is mounted on the antenna module to make the antenna module compact, and functions as a matching circuit for impedance matching to facilitate the design of mobile devices.