Shark Fin Antenna V2X Integration Signal Interference
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Solution Overview
Problem
Conventional shark fin antennas for vehicles suffer from errors due to RF signal attenuation and interference caused by RF cables, which hinder effective V2X communication systems.
Innovation Solution
The integration of a V2X communication module and satellite integration antenna within a shark fin antenna, eliminating the need for RF cables by adjusting the height of DMB and AM/FM antennas and using a circuit board with a fixing part and antenna part configuration that minimizes signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If RF cables are used to connect antennas and V2X communication unit, then the system can be assembled with separate components, but signal attenuation and interference occur due to cable length and external noise
Solution Approach 1:
The patent integrates the V2X communication unit directly into the shark fin antenna structure, eliminating the need for separate RF cable connections. The circuit board is mounted within the antenna housing, and antennas are positioned to directly interface with the communication unit, thereby removing the cable link that causes signal attenuation and interference.
Solution Approach 2:
The harmful RF cables are extracted and removed from the system entirely. The patent replaces the cable-based connection with a direct integrated connection between the antenna elements and the V2X communication unit on the circuit board, eliminating the source of signal loss and interference.
2Adaptability or versatility
If multiple antennas (GPS, DMB, AM/FM) are integrated into shark fin antenna, then communication functionality is enhanced, but antenna size increases
Solution Approach 1:
The shark fin antenna is designed as a multi-functional integrated unit that accommodates GPS, DMB, and AM/FM antennas along with the V2X communication unit. The circuit board serves multiple functions by hosting the communication unit and providing mounting structures for various antenna types, enabling one component to perform multiple communication functions.
Solution Approach 2:
The patent optimizes the spatial arrangement of multiple antennas by utilizing the vertical dimension and three-dimensional space within the shark fin structure. Antennas are positioned at different heights and angles on the circuit board, allowing multiple functions to coexist in a compact form factor without excessive size increase.
3Reliability
If DMB and AM/FM antenna heights are adjusted for optimization, then signal reception is improved, but antenna design complexity increases
Solution Approach 1:
The patent applies different height optimizations to specific antenna elements (DMB and AM/FM antennas) based on their individual signal reception requirements. Each antenna is positioned at an optimal height relative to the circuit board and vehicle body, allowing localized optimization of signal reception without requiring complete redesign of the entire antenna system.
Data Source
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AI summary
The present invention relates to a shark fin antenna equipped with a V2X communication system and, more particularly, to an integrated telematics antenna structure having embedded AM, FM, T-DMB, satellite integrations including GPS, Glonass, Galileo, XM, and SIRIUS, Wave, Wi-Fi, and 3G/4G. The present invention ensures high-efficiency performance in a moving vehicle, thereby being capable of wirelessly providing various frequency transmitting/receiving signals to a user's vehicle, an adjacent vehicle as desired by the user, and a pedestrian, whereby an integrated telematics service including a safety based service is provided. In addition, the present invention arranges a fixing part on which an antenna can be installed within an applicable range of the internal space of a shark fin-type antenna; produces an antenna similar to the form of the fixing part, thereby being capable of implementing an antenna with a small size, and smoothly receiving signals of various bands due to favorable antenna gain and radiation pattern condition; and combines the antenna gain and radiation pattern condition while providing the forms of an antenna unit and an auxiliary unit, thereby flexibly responding to receiving signals of different bands according to use regions, and increasing productivity of a product with a concise internal configuration.