Chip Antenna L-Shaped Ground Frequency Tuning
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Solution Overview
Problem
Conventional chip-type antenna structures require varying microstrip line lengths for different environments, leading to complexity and user confusion, as well as difficulties in adjusting frequencies without altering the size of the metal plate components.
Innovation Solution
A third-ground surface in the form of an L-shaped metal plate is added to the chip-type antenna structure, with a frequency-modulation element at its terminal, allowing the size of the metal plate to remain constant while adjusting the frequency by modifying the frequency-modulation element, simplifying production and component replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If microstrip line lengths are varied for different environments, then antenna performance is optimized for specific conditions, but device complexity and user confusion increase
Solution Approach 1:
The ground surface is designed with an extended region that can serve multiple functions: it acts as a ground plane for signal reference, provides additional capacitance for frequency tuning, and enables impedance matching. This single extended ground structure replaces the need for multiple different microstrip line configurations, allowing the antenna to adapt to different environments without changing the basic structure.
Solution Approach 2:
The invention enables frequency and impedance adjustment by changing the electrical parameters of the extended ground region rather than altering the radiating element geometry. By modifying the size, shape, or position of the extended ground surface, the antenna can be tuned for different frequencies and impedance requirements, providing environmental adaptability without increasing structural complexity.
2Reliability
If microstrip line lengths are varied for different environments, then antenna performance is optimized for specific conditions, but ease of operation decreases due to user confusion
Solution Approach 1:
The extended ground surface serves as a universal tuning mechanism that can be adjusted to optimize performance across different environments. Instead of presenting users with multiple complex microstrip line options, the design provides a single adaptable ground structure that can be configured for various applications, simplifying the user experience while maintaining optimization capabilities.
3Measurement precision
If metal plate size is changed to adjust frequency, then frequency tuning is achieved, but manufacturing complexity and component replacement difficulty increase
Solution Approach 1:
The invention achieves frequency tuning by modifying the parameters of the extended ground surface (such as its area, perimeter, or distance from the radiating element) rather than changing the size of the metal plate itself. This approach allows precise frequency control while maintaining a consistent metal plate design, simplifying manufacturing processes and enabling easier component replacement since the plate geometry remains standardized.
4Measurement precision
If metal plate size is changed to adjust frequency, then frequency tuning is achieved, but device complexity increases
Solution Approach 1:
The extended ground surface serves as a multi-functional element that provides both the necessary ground plane for antenna operation and the tuning mechanism for frequency adjustment. This eliminates the need for separate tuning components or multiple metal plate sizes, reducing device complexity while maintaining precise frequency control capabilities through geometric modifications of the ground region.
Data Source
AI summary
A chip-type antenna structure includes a baseboard, a matching element, a radiation single body and a frequency-modulation element. The baseboard includes a first-ground surface, a first-clearance area and a signal-feed-in unit. A second-ground surface, a second-clearance area, a third-ground surface and a plurality of via holes through the baseboard and electrically connected to the first-ground surface and the second-ground surface are arranged on the other side of the baseboard. The matching element is electrically connected between the signal-feed-in unit and the first-ground surface. One side of the radiation single body is electrically connected to the signal-feed-in unit through the via holes. The other side of the radiation single body is electrically connected to the third-ground surface. The frequency-modulation element is electrically connected between the second-ground surface and the third-ground surface to adjust the frequency-modulation element to adjust a receiving-transmitting frequency of the chip-type antenna structure.