Vector Signal Analyzer Concurrent Spectrum and Demodulation Analysis
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Solution Overview
Problem
Existing vector signal analyzers can only perform either spectrum analysis or signal demodulation and analysis at a time due to a single receiver, requiring multiple instruments and devices to observe both spectrum conditions and signal quality, leading to inconvenience and high costs.
Innovation Solution
A vector signal analyzer with a radio frequency front end splitting module to split received signals into two, enabling concurrent spectrum analysis and signal demodulation and analysis through multiple radio frequency/microwave processing and analog-to-digital conversion sub-modules, using a shared clock source for synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single receiver is used in the vector signal analyzer, then the device complexity is reduced, but the productivity deteriorates because only one function (spectrum analysis or signal demodulation) can be performed at a time
Solution Approach 1:
The receiver is segmented into two independent functional paths: a spectrum analysis path and a signal demodulation path. Each path has its own signal processing chain, allowing both functions to operate simultaneously on the same input signal without interfering with each other, thus resolving the contradiction between productivity and device complexity.
Solution Approach 2:
The single receiver is designed to perform multiple functions concurrently by incorporating both spectrum analysis capability and signal demodulation capability within the same device. This multi-functionality allows the receiver to simultaneously measure spectrum conditions and analyze signal quality, eliminating the need for separate instruments.
2Ease of operation
If only one receiver is provided, then the device complexity is lowered, but the ease of operation deteriorates because spectrum measurement and signal demodulation must be performed sequentially
Solution Approach 1:
The signal processing architecture is segmented into distinct parallel paths for spectrum analysis and signal demodulation. This segmentation allows both operations to be performed simultaneously on the same input signal, improving ease of operation by enabling concurrent measurements without requiring complex time-division multiplexing or sequential switching.
3Measurement precision
If multiple instruments are used to perform both spectrum analysis and signal demodulation, then the measurement precision is improved, but the device complexity and cost increase
Solution Approach 1:
The patent merges the functionality of a spectrum analyzer and a signal demodulator into a single integrated receiver. By combining these previously separate instruments into one unified device, the patent maintains high measurement precision for both spectrum analysis and signal demodulation while reducing device complexity and eliminating the need for multiple separate instruments and auxiliary devices.
Solution Approach 2:
The receiver is designed as a universal instrument that can perform both spectrum analysis and signal demodulation functions with high precision. This multi-functional design eliminates the need for multiple specialized instruments, reducing the overall complexity of the test environment while maintaining the measurement accuracy of each individual function.
Data Source
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AI summary
Disclosed in the present invention is a vector signal analyzer, which relates to communication technology. The vector signal analyzer comprises: a radio frequency front end splitting module, for splitting the received signals to at least two signals; an analog signal processing module, for performing radio frequency/micro wave processing and analog-digital conversion for each signal separately; a digital signal processing module, for performing spectrum analyze and signal demodulation analyze separately for each digital signals, which are outputted from the analog signal processing module. With the present invention, the received signals are divided into at least two signals by the radio frequency front end splitting module, and radio frequency/micro wave processing and analog-digital conversion are performed for each signal separately, then spectrum analyze and signal demodulation analyze are performed by digital signal processing module separately for each signal, thereby spectrum measurement function and signal demodulation analyze function are realized simultaneity, and the synchronization of each of analyze results gets better, so that it is convenient to compare and analyze by operators.