TIADC system DC bias and gain error calibration method and device
A technology of DC bias and gain error, which is applied in the field of communication, can solve the problem of not modifying the structure, achieve the effect of accurate and simple calibration process, simplify the calibration system, and expand the range of variation
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0080] In this embodiment, the multi-channel TIADC system takes 16 channels as an example, and the principle diagram of error calibration is shown in figure 2 , specifically use the digital domain design state machine to control the input signal, such as image 3 as shown,
[0081] S101. Connect the input end of the 16-channel TIADC system to the first DC calibration signal DC1;
[0082] Sampling the first DC calibration signal for 128 cycles, and calculating the first sampling mean value of the i-th channel according to the 128 sampling values;
[0083] Sampling the second DC calibration signal for 128 cycles, and calculating the second sampling mean value of the i-th channel according to the 128 sampling values;
[0084] After using the sampling module (ADC) to record 128 sampling values, calculate the first sampling average value V of the i-th channel 1 (i) and stored in the storage unit (store), return to input the second DC calibration signal DC2, use the sampling mod...
Embodiment 2
[0093] This embodiment takes 16 channels as an example to illustrate the TIADC system DC bias and gain error calibration device, such as Figure 4 shown, including:
[0094] 310 internal calibration signal source for DC bias and gain error calibration of the system;
[0095] The internal calibration signal source includes: a first DC calibration signal 311 and a second DC calibration signal 312;
[0096] The sampling module 320 is used to obtain at least two periodic sampling values under the channel working signal, the first DC calibration signal and the second DC calibration signal;
[0097] Specifically, 128 sampling values of the first DC calibration signal of each channel of the 16 channels are obtained, and 128 sampling values of the second DC calibration signal of each channel of the 16 channels are obtained; each channel of the 16 channels under the working signal is obtained The sampling data Vo(i);
[0098] The calibration module 330 includes a calculation u...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com