Vehicle Antenna Compensation via Cable-Modulated Control Signals
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Solution Overview
Problem
Existing antenna devices for motor vehicles face challenges in transmitting high-frequency signals in the 5-6 GHz range due to high attenuation in coaxial cables, requiring compensators to ensure performance, and existing solutions involve complex control signal management that can interfere with the high-frequency signals.
Innovation Solution
The antenna device modulates control signals for compensators onto separate antenna cables, using methods like amplitude, frequency, or pulse code modulation, to decouple control signals from high-frequency signals, allowing for efficient signal strength modification and reducing the need for multiple coaxial cables and plug connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If control signals are transmitted separately from high-frequency signals, then interference between control signals and high-frequency signals is minimized, but the number of cables and connections increases
Solution Approach 1:
The patent uses modulation as an intermediary technique to transmit control signals by modulating them onto the high-frequency signal carrier. This allows control signals to be embedded within the existing high-frequency signal path, eliminating the need for separate control cables while preventing interference through frequency domain separation. The modulated control signals are extracted and processed at the receiving end, achieving both goals of interference minimization and cable reduction.
2Reliability
If compensators are used to amplify high-frequency signals, then signal performance is maintained over long cable distances, but the complexity of the antenna device increases
Solution Approach 1:
The patent combines the compensator functionality with the existing radio modules in the antenna device. Instead of adding separate compensator units, the patent integrates signal amplification and compensation functions into the radio modules themselves, which already exist for high-frequency signal processing. This merging approach maintains signal performance over long distances while avoiding additional device complexity from separate compensator components.
3Object-affected harmful factors
If multiple separate cables are used for control signals and high-frequency signals, then signal interference is avoided, but the number of plug connections increases
Solution Approach 1:
The patent employs modulation as an intermediary method to embed control signals within the high-frequency signal path. By modulating control signals onto the carrier frequency, the system transmits multiple types of information through a single cable connection, eliminating the need for multiple plug connections while maintaining signal integrity through frequency domain separation. The receiving end demodulates and processes the embedded control signals separately.
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
This approach minimizes interference between control signals and high-frequency signals, reduces the number of coaxial cables and connections needed, and allows for efficient amplification or attenuation of signals, enhancing the performance of multiple radio modules within the antenna device.
Implementation Method 1
using methods like amplitude, frequency, or pulse code modulation
Implementation Method 2
using methods like amplitude, frequency, or pulse code modulation
Data Source
AI summary
The application relates to an antenna device for transmitting high-frequency signals from or to a motor vehicle. The antenna device comprises a first radio module and a second radio module, which provide high-frequency signals for transmission via an antenna, and an antenna module comprising the antenna and a compensator. The antenna module is connected to the first radio module via a first antenna cable, and to the second radio module via a second antenna cable. The compensator is designed to modify a signal strength of the high-frequency signals in accordance with a control signal. The first radio module and the second radio module are designed to generate the control signal for controlling the compensator, wherein in order to control the compensator, the second radio module modulates the control signal for the first radio module onto the second antenna cable.