Referenced Items are not available for this document.
Many commercial demodulator boards have an inherent problem of dc offset, due to their direct down-conversion architecture. It is necessary to measure the dc offsets and to compensate for them when the demodulators are used in a system such as a digital phased array. An automated calibration station is described, which uses a combination of commercial off-the-shelf hardware and software to generate RF signals that are used to plot the demodulator I and Q circle and to determine the offset. This automated station has improvements over a manual calibration, such as ease of use, shorter calibration time, accuracy, and repeatability.
Published in:
Antennas and Propagation Magazine, IEEE
(Volume:52
,
Issue:
5
)
Date of Publication: Oct. 2010
- Page(s):
- 174 - 178
- ISSN :
- 1045-9243
- INSPEC Accession Number:
- 11744700
- Digital Object Identifier :
- 10.1109/MAP.2010.5687526
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 13 January 2011
- Issue Date :
- Oct. 2010
- Sponsored by :
- IEEE Antennas and Propagation Society
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