Vehicle Antenna Frame Layout for Multi-Band Radiator Separation
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Solution Overview
Problem
Conventional vehicle antennas face challenges in transmitting and receiving signals across diverse frequency bands due to limitations in radiator design, leading to performance degradation and increased manufacturing costs.
Innovation Solution
The proposed solution eliminates the use of PCBs as radiators and employs a multi-frequency band antenna structure with a base, substrate, and antenna frames that support radiators with slits, ensuring a predetermined level of separation between radiators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are disposed in a limited space on vertically combined PCBs, then diverse frequency bands can be covered, but interference between radiators occurs causing performance degradation
Solution Approach 1:
The patent transitions from a two-dimensional PCB surface layout to a three-dimensional spatial arrangement by extending radiators in different directions from a central substrate. The first radiator extends in a first direction and the second radiator extends in a second direction perpendicular to the first direction, utilizing spatial dimensionality to achieve frequency band diversity while maintaining adequate separation between radiators to prevent interference.
2Adaptability or versatility
If multiple radiators are disposed in a limited space on vertically combined PCBs, then diverse frequency bands can be covered, but manufacturing costs increase
Solution Approach 1:
The patent merges multiple radiator structures into a single integrated antenna assembly with a common substrate. Instead of using separate PCBs for different frequency bands, the invention combines multiple radiators (first radiator and second radiator) onto one substrate, sharing common support structures and mounting mechanisms, thereby reducing the total number of components and simplifying the manufacturing process.
Solution Approach 2:
The substrate and support structure serve multiple functions simultaneously: they provide mechanical support for both the first and second radiators, enable electrical connections for diverse frequency bands, and maintain proper spacing between radiators. This multi-functional design eliminates the need for separate specialized PCBs for each frequency band, reducing manufacturing complexity and cost.
3Device complexity
If a single antenna is used for various frequency bands, then device simplicity is maintained, but signal transmission and reception across diverse frequency bands becomes inadequate
Solution Approach 1:
The antenna system incorporates radiators with different geometries and orientations that can be selectively activated or optimized for different frequency bands. The first radiator with slits and the second radiator with different dimensional proportions allow the antenna system to dynamically adapt its radiation characteristics across diverse frequency bands while maintaining a unified structural platform.
Data Source
AI summary
An antenna for a vehicle including: a base; a substrate disposed on an upper part of the base and on which feed lines are formed; a first antenna frame coupled to one side of an upper part of the substrate; and a first radiator disposed on an upper part of the first antenna frame and in which slits are formed, wherein the first antenna frame includes: a first radiator coupling portion supporting a lower part of the first radiator; and a plurality of supports extending downward from the lower part of the first radiator coupling portion and coupling to the substrate.