Variable Equalizer Gain Compensation for Broadband Signal Uniformity
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Solution Overview
Problem
Wireless communication systems, particularly satellite-based systems, face challenges with frequency-dependent gain issues that lead to bandwidth limitations and latency, making them less competitive with traditional wired connections due to excessive gain slope and ripple, resulting in increased power consumption and signal distortion.
Innovation Solution
The implementation of variable frequency-dependent gain compensation circuits, which can be configured to establish a composite frequency-dependent gain that is flatter and more uniform, reducing dynamic range requirements and improving signal processing capabilities by compensating for the frequency-dependent gains of individual components in transceivers and transceiver modules.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If frequency-dependent gain compensation is not applied, then the system structure remains simple, but the gain slope and ripple cause bandwidth limitations and signal distortion
Solution Approach 1:
The frequency-dependent gain compensation is achieved by dividing the broadband amplifier into multiple frequency bands, each with its own gain control. This segmentation allows independent optimization of gain characteristics for different frequency ranges, reducing overall gain slope and ripple while maintaining system manageability.
Solution Approach 2:
The patent implements dynamic gain control across different frequency bands using variable gain amplifiers that can be adjusted based on the actual frequency content of the signal. This dynamic approach allows the system to adapt to changing frequency conditions and maintain optimal gain uniformity across the broadband spectrum.
2Manufacturing precision
If frequency-dependent gain compensation is applied, then gain uniformity improves, but power consumption increases
Solution Approach 1:
Instead of applying uniform gain compensation across the entire frequency spectrum, the patent applies compensation only to the specific frequency bands where gain slope and ripple problems occur. This partial action approach reduces unnecessary power consumption while still achieving the required gain uniformity in the problematic frequency ranges.
Solution Approach 2:
The patent changes the gain parameter dynamically across different frequency bands rather than maintaining a fixed gain structure. By adjusting gain parameters selectively in different frequency ranges, the system achieves improved gain uniformity while minimizing the total power consumption compared to a uniform high-gain approach.
3Measurement precision
If frequency-dependent gain compensation is applied, then signal detection capability improves, but device complexity increases
Solution Approach 1:
The patent combines multiple gain control functions into an integrated compensation circuit that handles multiple frequency bands simultaneously. This merging approach improves signal detection capability across the broadband spectrum while reducing the overall device complexity compared to having separate compensation circuits for each frequency band.
Solution Approach 2:
The compensation circuit is designed with multi-functionality to handle various frequency bands and signal conditions using a unified structure. This universal design achieves improved signal detection capability across different frequencies without proportionally increasing device complexity, as the same circuit architecture serves multiple purposes.
Data Source
AI summary
Systems, devices, and methods for determining and establishing frequency-dependent gain compensation in wide bandwidth communication systems are disclosed. Variable frequency-dependent gain compensation circuits, or variable equalizers, have settings that configure them to establish discrete frequency-dependent gain compensation. The frequency-dependent gain compensation can include various types and levels of gain slope and/or ripple. The settings of the variable equalizers can be set by control signals established a control circuit in response to signals from an external computer. The variable equalizers are coupled to other circuits or devices and the frequency-dependent gain of the combined circuit are measured. The settings of the variable equalizer are then changed to establish an optimal frequency-dependent gain profile or frequency-dependent gain that is closest to a predetermined frequency-dependent target gain profile. The settings can then be saved in a memory or register.