Integrated Combo Antenna Module with Dual-Layer Substrate Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional combo antenna modules for portable devices face challenges in minimizing mounting space and thickness while maintaining antenna performance, due to differences in frequency bands and the use of expensive insulating substrates for UWB and low-frequency band antennas.
Innovation Solution
A combo antenna module integrating a low-frequency band and high-frequency band antennas on a single substrate with a ground pattern connected to the rear surface of the first antenna, using a first base substrate with a higher dielectric loss value and a second base substrate with a lower dielectric loss value, reducing the number of assembly processes and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If combo antenna module and UWB antenna module are separately manufactured and mounted, then antenna performance is maintained, but mounting space is insufficient
Solution Approach 1:
The patent combines the combo antenna module (low frequency band) and UWB antenna module (high frequency band) into a single integrated antenna module. The low frequency antenna pattern and high frequency antenna pattern are formed on the same substrate, sharing common structures such as the base substrate, metal layers, and ground patterns. This merging eliminates the need for separate mounting of two independent modules, thereby reducing mounting space while maintaining the antenna performance of both frequency bands through proper electromagnetic isolation and pattern design.
2Reliability
If expensive insulating substrate with low dielectric constant is used for combo antenna module, then high frequency band performance is improved, but unit price increases and thickness is restricted
Solution Approach 1:
The patent applies local quality by using different substrate materials for different frequency band requirements. Specifically, the low frequency antenna pattern is formed on a first base substrate with higher dielectric loss value (cheaper material), while the high frequency antenna pattern is formed on a second base substrate with lower dielectric loss value (expensive material). This allows each frequency band to have optimized material properties locally, achieving high frequency performance without requiring the entire module to use expensive substrates, thus reducing overall cost and thickness.
Data Source
AI summary
Disclosed is a combo antenna module and a method for manufacturing the same, in which a combo antenna of a low frequency band and an antenna of a high frequency band are integrated to minimize the mounting space and thickness while maintaining the same level of antenna performance. The disclosed combo antenna module comprises: a first antenna in which a first antenna pattern having a first operation frequency is disposed, and an attachment area not overlapping with the first antenna pattern is defined; and a second antenna which is disposed in the attachment area and has a second antenna pattern having a second operation frequency higher than the first operation frequency and disposed on the upper surface thereof, wherein the dielectric loss value of the second antenna is lower than the dielectric loss value of the first antenna.