Signal Probe Compressed Time Domain Data Storage
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Solution Overview
Problem
The existing signal acquisition probes require significant memory to store S-parameters, leading to increased costs and size, which is not feasible for meeting the bandwidth requirements of high-frequency signal measurements.
Innovation Solution
The probe stores compressed or filtered time domain data samples of impulse and step responses, derived from S-parameters, T-parameters, or ABCD-parameters, using techniques such as rate of change compression and adaptive boxcar filtering to reduce the memory requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If S-parameters are stored in memory to characterize the probe's frequency response, then measurement accuracy is improved, but memory size and cost increase
Solution Approach 1:
The patent transforms the frequency domain S-parameters into time domain impulse response data through inverse Fourier transform. This parameter transformation allows the same probe characterization information to be stored in a compressed format, reducing memory requirements while maintaining measurement accuracy.
Solution Approach 2:
The patent extracts only the essential characteristic information needed for probe compensation by converting S-parameters to impulse response data. This extraction process removes redundant information and retains only the critical frequency response characteristics, thereby reducing memory storage requirements.
2Measurement precision
If S-parameters are stored in memory to characterize the probe's frequency response, then measurement accuracy is improved, but probe cost increases
Solution Approach 1:
By changing the representation parameter from frequency domain S-parameters to time domain impulse response, the patent reduces the data storage requirements. This parameter transformation directly lowers the cost of memory components and overall probe manufacturing while preserving measurement accuracy.
Solution Approach 2:
The patent creates a compressed representation (impulse response data) that serves as an efficient copy of the original S-parameter information. This compressed copy contains the essential probe characteristics needed for accurate measurements, reducing both memory cost and probe manufacturing cost.
3Measurement precision
If S-parameters are stored in memory to characterize the probe's frequency response, then measurement accuracy is improved, but probe size increases
Solution Approach 1:
The patent applies parameter transformation by converting frequency domain data to time domain impulse response data. This transformation compresses the data representation, reducing the physical memory size required within the probe housing, thereby reducing overall probe size while maintaining measurement accuracy.
Data Source
AI summary
A signal acquisition probe stores compressed or compressed and filtered time domain data samples representing at least one of an impulse response or step response characterizing the signal acquisition probe. The compressed or compressed and filtered time domain data samples of the impulse response or the step response are provided to a signal measurement instrument for compensating the signal measurement instrument for the impulse or step response of the signal measurement instrument.