Time-interleaved analog-to-digital converter and high speed...

Details Time-interleaved analog-to-digital converter and high speed... Time-interleaved analog-to-digital converter and high speed...

2008-07-01

2008-07-01

Williams, Howard (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S155000

Reexamination Certificate

active

07394415

ABSTRACT:
A time-interleaved analog-to-digital converter stores in a correction information memory, correction information required to correct an error between signals output by a plurality of N analog-to-digital converters in advance. At this time, in order to enable acquisition of data required for a correction processing within a short period of time, a signal generator causes the plurality of N analog-to-digital converter to input a calibration signal including a plurality of signal components, each of which is positioned at a desired frequency in a bandwidth in which N/2 times of a sampling frequency Fs is defined as an upper limit, the signal components appearing in a bandwidth in which half times of the sampling clock frequency Fs is defined as an upper limit by sampling the analog-to-digital converters. A correction information calculating unit carries out a spectrum analysis relevant to analog-to-digital converted signals output by the plurality of N analog-to-digital converters in response to the calibration signal, thereby obtaining an amplitude and a phase of a plurality of signal components, newly obtaining the correction information, based on the amplitude and phase, and updating contents of the correction information memory in accordance with newly obtained correction information.

REFERENCES:
patent: 4763105 (1988-08-01), Jenq
patent: 5294926 (1994-03-01), Corcoran
patent: 6081215 (2000-06-01), Kost et al.
patent: 6269317 (2001-07-01), Schachner et al.
patent: 2003/0080885 (2003-05-01), Tamba
patent: 2004/0032385 (2004-02-01), Park et al.
patent: 2004/0174284 (2004-09-01), Pupalaikis
patent: 2006/0250288 (2006-11-01), Fernandez et al.
patent: 06-152410 (1994-05-01), None
patent: 2002-246910 (2002-08-01), None
patent: 2004-328436 (2004-11-01), None
patent: 2004328436 (2004-11-01), None
Notification Concerning Transmittal of International Preliminary Report on Patentability, Chapter I of the Patent Cooperation Treaty, and Written Opinion of the International Searching Authority, for PCT/JP2005/023676, dated Jul. 26, 2007. 5 sheets.

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