Vehicle Antenna Layout for Compact Multiband Frequency Coverage
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Solution Overview
Problem
Existing antennas for electronic devices in vehicles face a trade-off between covering a wide range of frequency bands and maintaining performance, as larger antennas are required for wide frequency coverage, which is not feasible due to space constraints, while smaller antennas compromise performance.
Innovation Solution
A multiband antenna design featuring a loop, multiple arms, and reactive components that allow tuning to resonate across various frequency bands without changing shape, using adjustable reactive components to adapt to different country standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the antenna size is increased to cover a wide range of frequency bands, then the frequency coverage is improved, but the space constraint of the electronic device is violated
Solution Approach 1:
The antenna body is segmented into multiple functional parts: a loop structure for lower frequency bands, multiple arms (first arm, second arm, third arm) for different frequency ranges, and a first area for additional frequency coverage. Each segment is optimized to resonate at specific frequency bands, allowing the antenna to cover a wide spectrum (617 MHz to 5 GHz and above) while maintaining a compact overall structure that fits within the electronic device's space constraints.
2Volume of moving object
If the antenna size is decreased to meet space constraints, then the space constraint is satisfied, but the performance is compromised
Solution Approach 1:
The antenna incorporates adjustable reactive components (inductors and capacitors) that can be tuned to change the resonant frequencies of different parts of the antenna structure. By adjusting these parameters, the antenna maintains optimal performance across multiple frequency bands (617 MHz to 5 GHz and above) despite its compact size, resolving the trade-off between small form factor and performance reliability.
3Adaptability or versatility
If the antenna is designed to cover multiple frequency bands, then the versatility is improved, but the device complexity increases
Solution Approach 1:
The antenna is designed as a universal multiband structure where a single integrated body performs multiple functions: the loop handles lower frequencies, the arms extend coverage to mid-range frequencies, and the first area plus reactive components enable higher frequency operation. This multi-functional design achieves broad frequency coverage (617 MHz to 5 GHz and above) without requiring multiple separate antenna elements, thereby limiting the increase in device 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
The antenna achieves wide frequency coverage from 617 MHz to 5 GHz, including 5G bands, while maintaining compact size and performance, enabling dynamic tuning for different frequency subsets and supporting multiple regional standards.
Implementation Method 1
a loop that goes from the feeding pin to the loading pin and that is configured to tune said antenna to resonate according to a first frequency band
Data Source
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AI summary
The invention relates to an antenna (11) of an electronic device (1), said antenna (10) comprising : - a body (110), - a feeding pin (111.1), - and a ground pin (111.2), wherein said antenna (11) further comprises a loading pin (111.3), and its body (110) comprises - a loop (1100) that goes from the feeding pin (111.1) to the loading pin (111.2) and that is configured to tune said antenna (11) to resonate according to a first frequency band (F1), - a first arm (1101) and a first area (1102) of the body (110) that are linked to said loop (1100) that are configured to tune said antenna (11) to resonate according to a second frequency band (F2), - a second arm (1103) that is linked to said loop (1100) that is configured to tune said antenna (11) to resonate according to a third frequency band (F3), and wherein the antenna (11) further comprises a first reactive component (112) that is connected to said loading pin (111.2).