Multi-Band Antenna Module Layout for Impedance Matching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current antenna modules fail to effectively cover multiple frequency bands, particularly in the 5G-Sub 6G spectrum, which requires broader frequency coverage and improved impedance matching across various bands.
Innovation Solution
The antenna module design incorporates a first and second antenna radiator with strategically formed gaps, a capacitive element connected between the second antenna and ground radiators, and complementary ground radiators to achieve multi-frequency coverage by adjusting impedance matching across different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional antenna designs are used, then the structure is simple, but the frequency coverage is limited
Solution Approach 1:
The antenna module integrates multiple antenna radiators (first and second antenna radiators) with different geometries to support multiple frequency bands simultaneously. The first antenna radiator covers lower frequency bands while the second antenna radiator covers higher frequency bands, achieving multi-functionality in a single integrated structure.
Solution Approach 2:
The antenna module is divided into distinct segments including first and second antenna radiators, first and second ground radiators, and capacitive elements. Each segment is optimized for specific frequency ranges, allowing independent tuning and contribution to overall multi-band performance.
2Adaptability or versatility
If multiple frequency bands are covered, then the frequency coverage is improved, but the impedance matching becomes difficult
Solution Approach 1:
Capacitive elements are introduced as intermediary components between the antenna radiators and ground radiators. These capacitive elements serve as tuning mechanisms to adjust and optimize impedance matching across different frequency bands, acting as mediators that enable precise control over electrical characteristics.
Solution Approach 2:
The design incorporates adjustable capacitive elements that allow modification of electrical parameters to achieve optimal impedance matching. By changing capacitance values and geometric parameters of radiators, the antenna can be tuned to maintain good impedance matching across multiple frequency bands.
3Area of stationary object
If antenna elements are placed close together, then the space utilization is improved, but the isolation between antennas decreases
Solution Approach 1:
The antenna module employs different ground radiator configurations in different regions. The first ground radiator is positioned to provide shielding for the first antenna radiator, while the second ground radiator serves the second antenna radiator. This localized ground structure optimization provides effective isolation and noise reduction for each antenna element within the compact overall structure.
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 enables the antenna module to support a wide range of frequencies from 617 MHz to 5000 MHz, with improved impedance matching and isolation, achieving efficient performance across multiple frequency bands with reduced noise interference.
Implementation Method 1
The capacitive element is disposed on the third gap and is connected to the second antenna radiator and the second ground radiator
Data Source
AI summary
An antenna module includes a first antenna radiator including a feeding terminal, a second antenna radiator, a first ground radiator, a second ground radiator and a capacitive element. The second antenna radiator is disposed on one side of the first antenna radiator, and a first gap is formed between a main portion of the second antenna radiator and the first antenna radiator. The first ground radiator is disposed on another side of the first antenna radiator, and a second gap is formed between the first antenna radiator and the first antenna radiator. The second ground radiator is disposed between the second antenna radiator and the first ground radiator, and a third gap is formed between the second ground radiator and a first branch of the second antenna radiator. The capacitive element is disposed on the third gap and connects the second antenna radiator and the second ground radiator.