Antenna Design for 5G Terminals Using Substrate Reuse
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Solution Overview
Problem
Current 5G terminal antenna designs face challenges in supporting both sub-6 GHz and mmWave frequency bands due to the need for high dimensional accuracy in coupled antenna modules, leading to difficulties in achieving product consistency and efficient use of limited space.
Innovation Solution
The design integrates a sub-6G/4G/3G/2G antenna with an mmWave antenna, where the mmWave antenna array utilizes a substrate board that is part of the sub-6G/4G/3G/2G antenna, allowing for spatial reuse and improved structural strength, and includes a processing chip and shielding member for signal processing and interference reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If coupled antenna design is used to support wider bandwidth, then frequency band coverage is improved, but manufacturing precision requirements increase
Solution Approach 1:
The antenna is divided into two independent portions: a first portion for sub-6G/4G/3G/2G frequency bands and a second portion for mmWave frequency bands. Each portion operates independently with its own radiation characteristics, eliminating the need for precise coupling between different frequency band antennas while maintaining wide bandwidth coverage.
Solution Approach 2:
The first portion of the antenna serves multiple functions by supporting sub-6G/4G/3G/2G frequency bands simultaneously, while the second portion handles mmWave bands. This multi-functional design allows a single antenna structure to cover multiple frequency ranges without requiring high precision coupling between them.
2Volume of moving object
If coupled antenna modules are integrated, then space utilization is improved, but device complexity increases
Solution Approach 1:
The antenna system is segmented into two independent portions with distinct radiation mechanisms, allowing each to be optimized separately for its frequency band while sharing the same physical space in the terminal, thus reducing overall design complexity.
Solution Approach 2:
The first and second portions are combined into a single integrated antenna structure that occupies limited terminal space, yet maintains operational independence through different radiation mechanisms, achieving space efficiency without proportionally increasing complexity.
Data Source
AI summary
An antenna includes a first portion and a second portion. The first portion is of a first shape and the second portion is of a second shape. The second portion is connected to the first portion by a junction. The antenna operates in a first frequency band and a second frequency band.