Title :
Multi-band pre-selectors for software-defined radio receivers
Author :
Gomez-Garcia, Roberto ; Munoz-Ferreras, J.-M. ; Sanchez-Renedo, M.
Author_Institution :
Dept. Signal Theor. & Commun., Univ. of Alcala, Alcalá de Henares, Spain
Abstract :
Direct sampling of the input filtered RF signal is a solution allowing channel simultaneity in software-defined radio (SDR) receivers. Here, the analog-to-digital converter (ADC) must be placed as close as possible to the antenna. Within this framework, multi-passband planar RF preselectors exploiting transversal signal-interference techniques are presented. They are the key element of direct-sampling multi-channel SDR receivers operating at sub-Nyquist rates, to properly acquire the incoming RF multi-passband signal. Two examples of RF pre-selectors based on this approach for evenly-spaced equal-bandwidth quad-band and frequency-asymmetrical dual-band receivers are designed and built. Measurement results for these prototypes are also provided.
Keywords :
analogue-digital conversion; interference (signal); radio receivers; radiofrequency filters; software radio; ADC; RF preselectors; analog-to-digital converter; direct-sampling multichannel SDR receivers; evenly-spaced equal-bandwidth quad-band; frequency-asymmetrical dual-band receiver; input filtered RF signal; multiband pre-selectors; multipassband planar RF preselector; software-defined radio receivers; subNyquist rate; transversal signal-interference technique; Dual band; Layout; Microstrip; Prototypes; Radio frequency; Receivers; Analog-to-digital converters (ADCs); RF pre-selectors; bandpass sampling; frequency-sparse signals; microstrip filters; multi-band filters; multi-channel systems; software-defined radios (SDRs); sub-Nyquist sampling;
Conference_Titel :
Radio and Wireless Symposium (RWS), 2013 IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-2929-3
Electronic_ISBN :
2164-2958
DOI :
10.1109/RWS.2013.6486625
