Multi-band Antenna Using Coupling Elements for Miniaturization
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Solution Overview
Problem
Current wireless communication devices require multiple antennas to support various communication functions, leading to increased hardware space and limited miniaturization, as existing antenna designs often utilize laser direct structuring technology or iron elements for enhanced radiation efficiency.
Innovation Solution
A multi-band antenna is designed with a radiation element and two extension elements that generate coupling effects to create multiple resonant modes, allowing a single antenna to support multiple communication functions, reducing the need for multiple antennas and hardware space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are used to support various communication functions, then communication functionality is improved, but hardware space consumption increases
Solution Approach 1:
The patent combines multiple antenna functions into a single multi-band antenna structure. The antenna includes a radiation element with multiple arms (first arm, second arm, third arm, fourth arm) that can operate across different frequency bands (2G, 5G, GPS) simultaneously, eliminating the need for separate antennas for each communication function.
Solution Approach 2:
The antenna is designed with universal multi-functionality to support multiple communication protocols including 2G, 5G, and GPS within a single device. The radiation element's specific geometry and configuration enable it to resonate at multiple frequency bands, making one antenna structure serve multiple communication purposes.
2Reliability
If laser direct structuring technology or iron elements are used to enhance radiation efficiency, then antenna performance is improved, but hardware space consumption increases
Solution Approach 1:
The patent applies local quality optimization by designing specific geometric features at critical locations of the radiation element. The arms have varying lengths and configurations (e.g., first arm longer than second arm, specific spacing between arms) that create localized resonant characteristics to enhance radiation efficiency at different frequency bands without requiring additional materials or complex structures.
Solution Approach 2:
The antenna achieves enhanced radiation efficiency through parameter optimization of its geometric structure. The radiation element's arm lengths, spacing, and configuration are carefully designed to resonate at multiple frequency bands (2G: 1900-2100MHz, 5G: 3400-3800MHz, GPS: 1575-1625MHz), eliminating the need for laser direct structuring or iron elements while maintaining high radiation efficiency.
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 multi-band antenna effectively operates in multiple frequency bands, such as 2G, 5G, and GPS, with high gain and reduced hardware requirements, facilitating device miniaturization without using LDS technology or iron elements.
Implementation Method 1
The radiation element includes a first portion and a second portion electrically connected with each other. The first portion is adjacent to an edge of the ground plane and has a feeding point. The first extension element is extended from the edge of the ground plane and is spaced from the first portion by a first coupling distance. The second extension element is extended from the edge of the ground plane and is spaced from the second portion by a second coupling distance.
Implementation Method 2
A feeding signal from the radiation element excites the first and the second extension elements through the first and the second coupling distances so that the multi-band antenna is operated further in a second band and a third band.
Data Source
AI summary
A multi-band antenna including a ground plane, a radiation element, a first extension element and a second extension element is provided. The radiation element includes a first portion and a second portion electrically connected with each other. The first portion has a feeding point. The first and the second extension elements are extended from the ground plane. The first extension element and the first portion are spaced by a first coupling distance. The second extension element and the second portion are spaced by a second coupling distance. The multi-band antenna is operated in a first band through the radiation element. A feeding signal from the radiation element excites the first and the second extension elements through the first and the second coupling distances so that the multi-band antenna is operated further in a second band and a third band.