Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS

Viduneth Ariyarathna; Sunera Kulasekera; Arjuna Madanayake; Kye-Shin Lee; Dora Suarez; Renato Cintra; Fábio Bayer; Leonid Belostotski

Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS

Viduneth Ariyarathna ¹ Sunera Kulasekera ¹ Arjuna Madanayake ¹ Kye-Shin Lee ¹ Dora Suarez ² Renato Cintra ^{2, 3} Fábio Bayer ⁴ Leonid Belostotski ⁵

1 University of Akron

2 UFPE - Universidade Federal de Pernambuco [Recife]

3 CAIRN - Energy Efficient Computing ArchItectures with Embedded Reconfigurable Resources

Inria Rennes – Bretagne Atlantique , IRISA-D3 - ARCHITECTURE

4 UFSM - Universidade Federal de Santa Maria

5 University of Calgary

Abstract : A current-mode CMOS design is proposed for realizing receive mode multi-beams in the analog domain using a novel DFT approximation. High-bandwidth CMOS RF transistors are employed in low-voltage current mirrors to achieve bandwidths exceeding 4 GHz. Current mirrors realize the ADFT coefficients, which take simple values of 1, -1, 2, -2 only. An example using 1.2V current-mode approximate DFT on 65nm CMOS, with BSIM4 models from the RF kit, show up to 4 GHz with 8 independent aperture beams.

Document type :

Conference papers

Domain :

Engineering Sciences [physics] / Signal and Image processing

Complete list of metadatas

https://hal.inria.fr/hal-01155302
Contributor : Olivier Sentieys <>
Submitted on : Tuesday, May 26, 2015 - 2:12:26 PM
Last modification on : Wednesday, December 18, 2019 - 5:11:55 PM

Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS

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Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS

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