Two-Dimensional Gain Calibration for Analog Components
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately calibrating analog components for gain variations across operating frequencies and temperatures, leading to inefficient performance and reliability issues due to the inability to effectively account for the combined effects of frequency and temperature on gain and loss.
Innovation Solution
A method and device for two-dimensional gain calibration, which identifies characterization gain values for specific frequency and temperature combinations, determines frequency and temperature contributions, and configures a gain offset to compensate for these variations, using a combination of observed gains and characterization data to create lookup tables that account for the impact of temperature on frequency-dependent gains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional single-dimensional gain calibration is used, then the calibration process is simple, but it cannot accurately compensate for gain variations caused by combined frequency and temperature effects
Solution Approach 1:
The patent segments the gain calibration into two independent dimensions: frequency contribution and temperature contribution. The total gain variation is decomposed as ΔG = ΔG_frequency + ΔG_temperature, allowing each dimension to be calibrated and compensated separately through lookup tables, thereby achieving accurate two-dimensional compensation without requiring complex joint calibration procedures
Solution Approach 2:
The patent performs preliminary characterization of gain variations across frequency and temperature ranges before actual operation. Lookup tables are pre-computed and stored containing gain correction values for different frequency-temperature combinations, enabling rapid compensation during runtime without real-time complex calculations
2Reliability
If gain calibration accounts for both frequency and temperature variations, then compensation accuracy improves, but computational complexity and processing time increase
Solution Approach 1:
By separating frequency and temperature contributions into independent lookup tables, the system avoids complex real-time joint calculations. During operation, only simple table lookups and additions are needed, dramatically reducing processing time while maintaining accurate compensation for both frequency and temperature effects
Solution Approach 2:
The patent creates simplified lookup tables that copy pre-computed gain correction values for different frequency and temperature conditions. These tables serve as pre-prepared reference data that can be quickly accessed during operation without performing complex physical calculations, thus reducing processing time while maintaining accuracy
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may identify, for a set of frequency values and a set of temperature values, characterization gain values associated with an analog component. The device may determine a frequency contribution based at least in part on comparing a first observed gain associated with a reference frequency and a second observed gain associated with a target frequency. The device may determine a temperature contribution based at least in part on comparing a first characterization gain value associated with a reference temperature and a second characterization gain value associated with a target temperature. The device may determine a gain offset for the target temperature and the target frequency based at least in part on combining the frequency and temperature contributions. The device may configure the gain offset for the analog component. Numerous other aspects are described.