Dual-Frequency Wideband Antenna Assembly for Compact UWB Devices
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Solution Overview
Problem
In the era of 5G mobile communication, there is a challenge in designing antennas that are compact in size while maintaining a wide radiation bandwidth to support multiple frequency bands effectively.
Innovation Solution
The proposed solution involves an antenna assembly with a radiator, a grounding point, and a feeding point, where the feeding point is spaced from the grounding point on the radiator, allowing the antenna to support both a first and a second frequency band through a single-feed mechanism, enabling dual-frequency wideband operation by exciting monopole and dipole antenna modes, and incorporating an impedance matching circuit for improved efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna size is reduced to fit small electronic devices, then the space requirement is improved, but the radiation bandwidth decreases
Solution Approach 1:
The antenna radiator is divided into multiple segments including a first radiator portion and a second radiator portion, with the grounding point positioned between them. This segmentation allows the antenna to support multiple frequency bands (first frequency band and second frequency band) simultaneously while maintaining a compact overall structure, thus resolving the contradiction between small size and wide bandwidth.
Solution Approach 2:
The patent utilizes three-dimensional space arrangement by positioning the feeding point and grounding point at specific locations on the radiator structure. The antenna employs vertical and horizontal dimension optimization to achieve wideband performance in a compact form factor, transforming the design from two-dimensional planar layouts to three-dimensional spatial configurations.
2Adaptability or versatility
If multiple frequency bands are supported, then the adaptability is improved, but the antenna structure complexity increases
Solution Approach 1:
The antenna assembly is designed as a universal structure that can operate across multiple frequency bands (first frequency band and second frequency band) using a single radiator configuration. The grounding point positioned on the radiator enables the same structure to support both frequency bands simultaneously, eliminating the need for separate antenna elements for different bands and thus reducing overall system 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 effectively expands the radiation bandwidth, improves antenna efficiency, and reduces the size of the antenna assembly, enabling it to cover a wide frequency range from 3.1 GHz to 10.6 GHz, meeting the requirements for Ultra Wide Band (UWB) communication while maintaining a low profile, suitable for electronic devices.
Implementation Method 1
the antenna radiator supports a first frequency band and a second frequency band... enabling dual-frequency wideband operation by exciting monopole and dipole antenna modes
Data Source
AI summary
An antenna assembly, a dual-frequency wideband antenna, and an electronic device are provided. The antenna assembly includes an antenna radiator, a grounding point, and a feeding point. The grounding point is arranged on a middle portion of the antenna radiator. The feeding point is arranged on the antenna radiator and spaced from the grounding point. The feeding point is fed by a feeding source, such that the antenna radiator supports a first frequency band and a second frequency band. The first frequency band is different from the second frequency band.