@article{
 title = {Putting the "Flex" in flexible mobile wireless radios - A wideband continuous-time baudpass sigma-delta ADC software radios},
 type = {article},
 year = {2006},
 identifiers = {[object Object]},
 volume = {22},
 id = {037237c0-aae1-3444-80fc-1bb77a94287e},
 created = {2017-12-04T05:34:42.220Z},
 file_attached = {false},
 profile_id = {99d7e05e-a704-3549-ada2-dfc74a2d55ec},
 last_modified = {2017-12-04T05:34:42.220Z},
 read = {false},
 starred = {false},
 authored = {true},
 confirmed = {false},
 hidden = {false},
 private_publication = {false},
 abstract = {There are various issues to address in the design of future software radios with focus on analog-to-digital converters (ADCs). In order to cope with different standards such as cellular and WLAN in a flexible radio, ADCs needs to have a variable bandwidth and dynamic range. Sigma-delta modulator architecture ADCs are quite suitable for this task. This modulator allows inherent trade-off between bandwidth and dynamic range and lowers the specifications for the channel/ anti-aliasing filter in front of the ADC. Sigma-delta ADC offers great features for flexibility, adaptability and programmability, high reusability and integration capability. Various design architectures include single stage, cascaded, high-order order, single bit, multibit, switched-capacitor, continuous-time, lowpass, and bandpass sigma-delta modulators. Each architecture offers its merits and drawbacks and is particularly suitable for certain applications. Among them, continuous-time bandpass sigma delta ADC is a promising candidate for high intermediate frequency receivers. Moreover, digitally tuned bandpass sigma-delta modulators are able to change the center frequency and/or the signal bandwidth of the modulator, increasing ADC's flexibility. However, to overcome issues on clock jitter and excess loop delay special design solutions are necessary.},
 bibtype = {article},
 author = {Rusu, A. and Dong, B. and Ismail, M.},
 journal = {IEEE Circuits and Devices Magazine},
 number = {6}
}

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