Mobile Radio Compensator with Multi-Band Signal Detection
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Solution Overview
Problem
Existing mobile radio compensators fail to differentiate between active and inactive mobile radio bands, leading to inefficient amplification control and potential signal level exceedance, particularly in vehicles where additional attenuation occurs.
Innovation Solution
A mobile radio compensator with a detection mechanism that uses decoupling signal paths and adjustable amplification means to identify active mobile radio bands by comparing signal levels with threshold values, ensuring amplification is targeted and within specified limits, using a central detection means and adjustment/control mechanism to switch amplification on/off in decoupling signal paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If amplifier circuits are used to compensate for signal attenuation in motor vehicle antennas, then transmission power is increased to match outdoor levels, but signal level limits may be exceeded and device complexity increases
Solution Approach 1:
The patent divides the amplification function into multiple independent amplification stages (first amplification means, second amplification means) that can be independently controlled. Each stage handles specific signal paths (mobile radio device to antenna, antenna to base station), allowing selective activation based on operational needs rather than continuous full-system amplification.
Solution Approach 2:
The patent implements dynamic control of amplification through detection means that monitor signal levels and automatically activate or deactivate amplification stages accordingly. The system transitions between active and inactive states based on real-time signal conditions, preventing unnecessary amplification that would exceed power limits while ensuring adequate power when needed.
2Reliability
If continuous amplification is used to compensate for attenuation, then communication reliability is improved, but energy consumption increases and signal level limits may be exceeded
Solution Approach 1:
The patent incorporates detection means that continuously monitor signal levels and provide feedback to control the amplification stages. This feedback mechanism ensures amplification is applied only when signal levels fall below thresholds, maintaining communication reliability while avoiding unnecessary energy consumption from continuous amplification.
Solution Approach 2:
The system employs periodic detection and activation cycles where the detection means regularly checks signal levels and activates amplification only during periods when attenuation exceeds acceptable thresholds. This periodic operation maintains reliability while significantly reducing average energy consumption compared to continuous amplification.
3Manufacturing precision
If multiple amplification stages are used to control signal levels, then signal level precision is improved, but device complexity increases
Solution Approach 1:
The patent segments the amplification function into distinct stages with individual control, allowing precise adjustment of signal levels at different points in the signal path. Each amplification stage can be independently optimized for its specific function, improving overall signal level precision without requiring a single complex high-power amplifier.
Data Source
AI summary
A mobile radio compensator (1) comprises an adjustable signal-level amplification means (12a, 12b) and a central detection means (13) in order to detect the signal level of the transmission signals. An adjustment and/or control means (14) can adjust a signal amplification, produced by the signal-level amplification means (12a, 12b), of the transmission signals on the basis of the signal level detected by the detection means (13). A decoupling means (15) comprising at least two decoupling signal paths (15a, 15b, 15c) is provided, wherein the decoupling signal paths (15a, 15b, 15c) are connected to a power adding means (19) of which the output (20) is in turn connected to the detection means (13). The decoupling means (15) comprises a filter means (25, 25a, 25b, 25c) which is arranged on or in the at least two decoupling signal paths (15a, 15b, 15c), wherein the passbands (Δf1, Δf2, Δf3) for each of the at least two decoupling signal paths (15a, 15b, 15c) differ. The decoupling signal paths (15a, 15b, 15c) comprise an adjustable amplification means (30a, 30b, 30c), which are alternately switched on and off by the adjustment and/or control means (14).