Antenna Structure with Housing Gaps for Multi-Frequency Operation
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Solution Overview
Problem
Current antenna structures are complex and occupy significant space, making it difficult to miniaturize electronic devices while effectively transmitting and receiving wireless signals at various frequencies.
Innovation Solution
The antenna structure incorporates a housing with strategically placed gaps and a system ground plane, utilizing multiple radiation portions and a switch circuit to efficiently cover a wide range of frequencies, including LTE-A, 5G NR, and other communication technologies, without the need for an antenna tuner, thereby reducing size and production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional antenna structures are used to transmit and receive wireless signals at different frequencies, then communication functionality is achieved, but the antenna structure becomes complicated and occupies large space
Solution Approach 1:
The patent combines multiple antenna radiation portions (first and second radiation portions) into a single integrated antenna structure formed by the housing. This merging allows the antenna to cover multiple frequency bands (including LTE-A and 5G NR) while occupying minimal space within the electronic device housing, resolving the contradiction between frequency coverage adaptability and space occupation.
Solution Approach 2:
The antenna structure is designed to perform multiple functions by supporting both LTE-A and 5G NR frequency bands simultaneously through its dual radiation portions. The housing itself serves as the antenna structure, making the device body multi-functional by integrating both structural and wireless communication functions, thereby achieving wide frequency coverage without additional dedicated antenna space.
2Adaptability or versatility
If antenna tuner is added to improve frequency coverage, then bandwidth and radiation efficiency are enhanced, but device complexity and production cost increase
Solution Approach 1:
The patent extracts and eliminates the antenna tuner component from the traditional antenna system. Instead of using an antenna tuner to achieve wide bandwidth and frequency adaptability, the design relies on the inherent characteristics of the dual radiation portions formed by the housing gaps, which naturally support multiple frequency bands without requiring additional tuning components, thereby reducing device complexity and production cost.
Solution Approach 2:
The antenna structure is designed to self-adjust and self-optimize across different frequency bands through its dual radiation portions with different impedance characteristics. The first radiation portion handles lower frequency bands while the second radiation portion handles higher frequency bands, allowing the antenna system to automatically adapt to different frequencies without external tuning components, achieving bandwidth enhancement through self-service rather than additional complexity.
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 enhances radiation efficiency and bandwidth, allowing the antenna to cover multiple frequency bands, including 4G and 5G sub6 NR, while maintaining aesthetic appeal and reducing production costs by eliminating the need for an antenna tuner.
Implementation Method 1
The antenna structure may include a first radiation portion and a second radiation portion... The antenna structure can cover a low frequency band, a middle frequency band, an ultra-high frequency band, and a 5G sub6 frequency band
Data Source
AI summary
An antenna structure of reduced size but able to operate at multiple frequencies, and applied to an electronic device, includes a housing, a first feed point, a first radiation portion, a first ground point, a second radiation portion, and a second feed point. The housing has at least one portion made of metal material with first and second gaps therein. The housing between first and second gaps forms the first radiation portion. The first feed point feeds current and signal to the first radiation portion. The first ground point is spaced from the first feed point and is grounded through a first inductive element. The second radiation portion is adjacent to the first radiation portion. The second feed point is electrically connected to a second signal point and feeds current and signal to the second radiation portion.