Receiver Sensitivity Measurement Without Demodulation Sync
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for measuring receiver sensitivity require demodulation, which complicates the test flow and introduces synchronization requirements.
Innovation Solution
A method for measuring receiver sensitivity that involves calculating path loss and output noise power without demodulating the signal, using parameters like path loss, output noise power, and signal-to-noise ratio (SNR) to estimate sensitivity indirectly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If demodulation is used to measure receiver sensitivity, then measurement accuracy is improved, but test flow complexity increases
Solution Approach 1:
The patent extracts the essential measurement function from the complex demodulation process. Instead of performing full demodulation to measure sensitivity, the invention measures only the necessary parameter (signal power at the receiver output) to calculate sensitivity. This extracts the core measurement need while eliminating unnecessary complex processing steps.
Solution Approach 2:
The patent inverts the traditional measurement approach. Rather than transmitting a signal and demodulating it to measure sensitivity, the method transmits a known power level signal and directly measures the output power, then calculates sensitivity from this inverted measurement. This reversal simplifies the test flow while maintaining measurement accuracy.
2Measurement precision
If demodulation is used to measure receiver sensitivity, then sensitivity level determination is improved, but synchronization requirements increase
Solution Approach 1:
The patent extracts only the essential measurement capability needed for sensitivity determination. Instead of implementing full demodulation with its associated synchronization requirements, the invention extracts and measures only the signal power parameter, which is sufficient for sensitivity calculation. This eliminates synchronization complexity while preserving sensitivity measurement capability.
3Measurement precision
If traditional sensitivity measurement method is used, then accurate sensitivity level is obtained, but test time increases
Solution Approach 1:
The patent skips the time-consuming demodulation process and goes directly to the essential measurement step. By measuring signal power without performing full demodulation, the method rushes through the measurement process efficiently while still obtaining accurate sensitivity levels through direct power calculation.
Data Source
AI summary
A method for measuring a sensitivity of a receiver is provided. The method includes: during a first stage, controlling a signal generator to transmit an input test signal to an input node of the receiver, wherein the receiver generates an output test signal on a first output node of the receiver according to the input test signal; calculating a path loss from the input node of the receiver to the first output node of the receiver according to the input test signal and the output test signal; during a second stage, measuring an output noise power on a second output node of the receiver after a load is connected to the input node of the receiver; and calculating the sensitivity of the receiver according to the path loss and the output noise power. The load may be an antenna or a 50-ohm impedance load.