Referenced Items are not available for this document.
The placement of the analog-to-digital converter as near the antenna as possible is a key issue in the software-defined radio receiver design. Direct sampling of the incoming filtered signal is a compact solution enabling channel simultaneity. In this brief, in the context of evenly spaced equal-bandwidth multiband systems, sufficient conditions for the channel allocation assuring that the minimum sub-Nyquist sampling frequency does not imply aliasing are provided. Subsequently, as a validation example, the design of a minimum-sampling-frequency acquisition system for quad-band applications within a ultrawideband frequency range is shown. Moreover, an innovative solution for its radio-frequency front end, basically consisting of a signal-interference multiband bandpass filter, is reported. Experimental results of the built microstrip-filter prototype for the proposed 1-3-GHz-range quad-band system are also given.
Published in:
Circuits and Systems II: Express Briefs, IEEE Transactions on
(Volume:58
,
Issue:
3
)
Date of Publication: March 2011
- Page(s):
- 129 - 133
- ISSN :
- 1549-7747
- INSPEC Accession Number:
- 11883037
- Digital Object Identifier :
- 10.1109/TCSII.2011.2110391
- Product Type:
- Journals & Magazines
- Date of Publication :
- 24 February 2011
- Date of Current Version :
- 14 March 2011
- Issue Date :
- March 2011
- Sponsored by :
- IEEE Circuits and Systems Society
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