Mobile Signal Amplifier Circuit With Adaptive Attenuation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing circuit arrangements for mobile phone devices in vehicles or stationary settings often cause additional signal damping, which cannot be accurately compensated with constant signal reinforcement due to variable transmission power and changing coupling conditions.
Innovation Solution
A circuit arrangement with an adjustable signal level reinforcement device, including a signal amplifier and a damping device, that dynamically adjusts signal reinforcement based on detected signal levels, ensuring the signal level remains within defined limits without affecting coordination with the mobile phone station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a constant signal gain is used to compensate for signal attenuation, then the circuit arrangement is simple to operate, but the compensation is inaccurate when signal attenuation varies
Solution Approach 1:
The patent implements dynamic signal gain adjustment by detecting the actual signal level at the output and comparing it with a reference level. Based on this comparison, the gain of the signal amplifier is automatically adjusted to compensate for varying signal attenuation caused by different mobile device positions and orientations, thereby maintaining accurate compensation while adapting to changing conditions
2Reliability
If the signal level is raised above the direct antenna level to compensate for attenuation, then the signal quality improves, but the coordination between mobile device and mobile station is interfered with
Solution Approach 1:
The patent employs a feedback mechanism where the signal level at the output of the circuit arrangement is detected and fed back to the gain control unit. This feedback loop enables automatic adjustment of the signal amplifier gain to maintain the output signal level within the permissible range defined by mobile communication standards, thereby improving signal quality without interfering with the coordination between the mobile device and mobile station
3Measurement precision
If the additional signal attenuation is determined by coordination with the mobile device, then the compensation accuracy improves, but the circuit complexity and coordination requirements increase
Solution Approach 1:
The patent implements a self-service mechanism where the circuit arrangement autonomously determines the actual signal attenuation by detecting the output signal level and comparing it with the known input signal level from the mobile device. This self-determination eliminates the need for complex coordination with the mobile device to measure attenuation, thereby achieving accurate compensation without increasing coordination 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 solution effectively compensates for variable signal damping, maintaining optimal signal levels and ensuring uninterrupted communication between the mobile phone device and the mobile phone station, while adhering to maximum permissible signal levels.
Implementation Method 1
a signal amplifier for amplifying the transmission signals with a signal amplification generated by the signal amplifier
Implementation Method 2
a damping device for attenuating the transmission signals with a signal attenuation generated by the damping device
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a circuit arrangement and a method for compensating for signal attenuation during the transmission of signals from a mobile communication device. The circuit arrangement comprises a signal amplifier for amplifying the signals, as well as an adjustable attenuator combined with the signal amplifier in such a way that the signals are amplified according to a resulting gain that results from the signal amplification generated by the signal amplifier and the signal attenuation generated by the attenuator. If the signal level of the mobile communication device's signals reaches or exceeds a predetermined upper limit (SWO), the adjustable attenuator is caused to increase the signal attenuation. If the signal level of the mobile communication device's signals reaches or falls below a predetermined lower limit (SWU), the signal attenuation is also increased.The resulting signal amplification of the transmitted signals therefore remains unchanged within a defined, and in particular predetermined, range of signal levels. A change only occurs when the limits of this range are reached, exceeded, or fallen below.