Sökning: WFRF:(Ahmad Shakeel 1977 ) >
Cancellation of Spu...
Cancellation of Spurious Spectral Components in One-Bit Stimuli Generator
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- Ahmad, Shakeel, 1977- (författare)
- Linköpings universitet,Elektroniska komponenter,Tekniska högskolan
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- Dabrowski, Jerzy, 1952- (författare)
- Linköpings universitet,Elektroniska komponenter,Tekniska högskolan
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(creator_code:org_t)
- IEEE, 2010
- 2010
- Engelska.
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Ingår i: Proceedings of IEEEInternational Conference on Signals and Electronic Systems, (ICSES 10). - : IEEE. - 9781424453078 ; , s. 393-396
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Abstract
Ämnesord
Stäng
- This work presents a cancellation technique of non-linear distortion components of one-bit digital stimulus sequence which is generated in software by a ΣΔ modulator. The stimulus is stored in a cyclic memory and applied to a circuit under test through a driving buffer and a simple lowpass reconstruction filter. The distortion components originate from buffer imperfections which result in a possible asymmetry between rising and falling edges of a NRTZ waveform representing the encoded stimulus. We show that the distortion components can be cancelled by using a simple predistortion technique. In addition an on-chip DC-calibrated ADC can be used to identify the second-order nonlinear products of the driving buffer. This procedure allows for cancellation of all the second-order distortions before the actual test and it can be extended to the third order terms as well.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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