RT Journal Article
A1 M. Mishali
A1 Y.C. Eldar
A1 O. Dounaevsky
A1 E. Shoshan

PB iet
T1 Xampling: analog to digital at sub-Nyquist rates
JN IET Circuits, Devices & Systems
VO 5
IS 1
SP 8
OP 20
AB The authors present a sub-Nyquist analog-to-digital converter of wideband inputs. The circuit realises the recently proposed modulated wideband converter, which is a flexible platform for sampling signals according to their actual bandwidth occupation. The theoretical work enables, for example, a sub-Nyquist wideband communication receiver, which has no prior information on the transmitter carrier positions. The present design supports input signals with 2 GHz Nyquist rate and 120 MHz spectrum occupancy, with arbitrary transmission frequencies. The sampling rate is as low as 280 MHz. To the best of the authors' knowledge, this is the first reported hardware that performs sub-Nyquist sampling and reconstruction of wideband signals. The authors describe the various circuit design considerations, with an emphasis on the non-ordinary challenges the converter introduces: mixing a signal with a multiple set of sinusoids, rather than a single local oscillator, and generation of highly transient periodic waveforms, with transient intervals on the order of the Nyquist rate. Hardware experiments validate the design and demonstrate sub-Nyquist sampling and signal reconstruction.
K1 frequency 2 GHz
K1 frequency 280 MHz
K1 single local oscillator
K1 Xampling
K1 circuit design considerations
K1 subNyquist wideband communication receiver
K1 transient intervals
K1 frequency 120 MHz
K1 analog-to-digital converter
K1 signal reconstruction
K1 transient periodic waveforms
K1 wideband signals
DO https://doi.org/10.1049/iet-cds.2010.0147
UL https://digital-library.theiet.org/;jsessionid=1s1q48wwfhfl2.x-iet-live-01content/journals/10.1049/iet-cds.2010.0147
LA English
SN 1751-858X
YR 2011
OL EN