Multi-frequency antenna with series LC loading
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-frequency antennas require a large space and complex configurations due to multiple antenna elements, making them bulky and difficult to miniaturize for use in wireless communication systems that operate across multiple frequency bands.
Innovation Solution
A multi-frequency antenna design featuring a single antenna element with a series circuit comprising a first inductor, a capacitor, and a second inductor, which generates multiple resonance frequencies, allowing for operation across multiple frequency bands with a compact and simplified configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna elements are used to achieve multi-frequency operation, then the antenna can operate at multiple frequency bands, but the antenna size and structural complexity increase
Solution Approach 1:
The patent merges multiple antenna elements into a single integrated antenna structure. The single antenna element is configured with specific geometric parameters and loading elements (inductors and capacitors) to achieve multi-frequency resonance, thereby combining the functions of multiple antennas into one compact unit and reducing overall antenna size.
Solution Approach 2:
The single antenna element is designed to perform multiple functions by operating at multiple frequency bands simultaneously. Through strategic placement of loading elements and careful design of the antenna geometry, one antenna structure achieves what previously required multiple separate antennas, enabling universal multi-band communication capability.
2Adaptability or versatility
If multiple antenna elements are used to achieve multi-frequency operation, then the antenna can operate at multiple frequency bands, but the configuration becomes complex
Solution Approach 1:
The patent merges multiple antenna elements into a single integrated antenna structure. The single antenna element is configured with specific geometric parameters and loading elements (inductors and capacitors) to achieve multi-frequency resonance, thereby combining the functions of multiple antennas into one compact unit and reducing overall antenna size.
Solution Approach 2:
The patent employs parameter changes by adjusting the geometric dimensions of the single antenna element and the values of loading elements (inductors and capacitors) to tune the resonance frequencies. By changing these parameters, the antenna can be configured to operate at desired multiple frequency bands without requiring complex multi-element structures.
3Volume of moving object
If a single antenna element is used, then the antenna size is reduced, but achieving multi-frequency operation becomes difficult
Solution Approach 1:
The patent introduces loading elements (inductors and capacitors) as intermediaries to enable multi-frequency operation of the single antenna element. These loading elements act as mediators that modify the electrical characteristics of the antenna, creating additional resonance frequencies and enabling the compact single-element structure to achieve multi-band operation that would otherwise be difficult.
Solution Approach 2:
The patent employs parameter changes by adjusting the geometric dimensions of the single antenna element and the values of loading elements (inductors and capacitors) to tune the resonance frequencies. By changing these parameters, the antenna can be configured to operate at desired multiple frequency bands without requiring complex multi-element structures.
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 design enables a small, non-complex multi-frequency antenna capable of operating across multiple frequency bands, such as 2.5 GHz and 5.5 GHz, with sufficient gain and reduced reflection loss, facilitating efficient wireless communication.
Implementation Method 1
inductances of the first inductor and the second inductor and a capacitance of the capacitor each has a value generating a plurality of resonance frequencies
Data Source
AI summary
A multi-frequency antenna (1) comprises a dielectric substrate (100), an antenna element (110), a shunt inductor (120), a capacitor conductor (130), a series inductor (140), a grounded part (150) and a feeding point (160). The antenna element (110) is arranged on the substrate (100), and is electrically connected to the grounded part (150) through the shunt inductor (120). Moreover, the antenna element (110) is electrically connected to the feeding point (160) through a series capacitor formed by a part where the antenna element (110) faces the capacitor conductor (130) and the substrate (100) therebetween, and through the series inductor (140).