LNB Frequency Error Correction via Dielectric Resonator Oscillator
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Solution Overview
Problem
Current satellite communication systems face challenges in accurately correcting frequency errors and managing cross-coupling signals, which affect signal quality and efficiency in satellite signal processing.
Innovation Solution
The implementation of a low noise block (LNB) configuration with integrated frequency determination and clock generation modules, including a dielectric resonator oscillator, that computes the center frequency of satellite signals and generates a reference signal for sampling, while also employing cross-coupling signal cancellation techniques to reduce interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional frequency correction methods are used in satellite communication systems, then the system structure remains simple, but frequency error correction accuracy deteriorates and cross-coupling signals cannot be effectively managed
Solution Approach 1:
The patent combines frequency determination module, clock generation module with dielectric resonator oscillator, and cross-coupling signal cancellation module into an integrated signal processing system. This merging of previously separate functions enables accurate frequency error correction while simultaneously managing cross-coupling signals, resolving the contradiction between improved measurement precision and increased device complexity.
Solution Approach 2:
The patent introduces a dielectric resonator oscillator as an intermediary component that provides a stable reference frequency for the sampling clock. This intermediary element enables precise frequency error correction by providing a reliable reference against which satellite signal frequencies can be measured and corrected, thereby improving measurement precision without requiring overly complex external reference systems.
2Productivity
If integrated frequency determination and clock generation modules are implemented, then signal processing efficiency improves, but device complexity increases
Solution Approach 1:
The patent merges frequency determination, clock generation with dielectric resonator oscillator, and cross-coupling signal cancellation functions into the LNB configuration. This integration enables these functions to operate simultaneously and coordinatedly, improving signal processing efficiency by eliminating the need for separate external modules while the unified design manages complexity through functional consolidation.
Solution Approach 2:
The LNB configuration is designed with multi-functional modules that perform multiple tasks: the frequency determination module identifies signal characteristics, the clock generation module provides sampling references, and the cross-coupling cancellation module suppresses interference. This multi-functionality improves signal processing efficiency by having a single integrated system handle multiple critical functions rather than requiring separate specialized devices.
3Reliability
If cross-coupling signal cancellation techniques are employed, then signal quality improves, but the complexity of signal processing increases
Solution Approach 1:
The patent employs cross-coupling signal cancellation as an intermediary processing step that occurs within the integrated signal processing chain. This cancellation technique acts as a mediator that removes harmful cross-coupling signals between adjacent transponders, thereby improving signal quality and reliability. By embedding this function within the integrated module rather than requiring external complex interference management systems, the patent achieves better signal quality while managing processing complexity.
4Reliability
If frequency error correction is implemented with high precision, then communication reliability improves, but the complexity of frequency determination and clock generation increases
Solution Approach 1:
The patent combines frequency determination and clock generation functions with a dielectric resonator oscillator into a single integrated module. This merging enables high-precision frequency error correction by providing a stable, integrated reference frequency source that is tightly coupled with the frequency measurement and correction processes, thereby improving communication reliability while managing the complexity through functional integration rather than separate complex subsystems.
Solution Approach 2:
The dielectric resonator oscillator serves as an intermediary reference element that bridges the frequency determination and signal processing functions. This intermediary provides a stable, high-precision reference frequency that enables accurate frequency error measurement and correction without requiring overly complex external frequency standards or multiple independent reference sources, thus improving communication reliability while controlling system 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
This solution improves signal accuracy by correcting frequency errors and minimizing cross-coupling, leading to enhanced signal processing efficiency and quality in satellite communications.
Implementation Method 1
generating a reference signal at the computed center frequency
Implementation Method 2
including a dielectric resonator oscillator
Data Source
AI summary
Systems and methods for correcting frequency error in a received signal include: receiving a satellite signal, the satellite signal having a bandwidth and a center frequency; determining the profile of the satellite signal; computing the center frequency of the satellite signal based on the profile of the received signal; and generating a reference signal at the computed center frequency. The systems and methods may further include computing a center frequency of each of a plurality of satellite signals based on the computed center frequency. Determining the profile may include sweeping a tuner above and below a given reference frequency; measuring the received signal strength during the sweeping operation; and determining the profile based on the received signal strength.