Semi-digital FIR DAC for low power single carrier IEEE 802.11ad 60GHz transmitter

Fikre Tsigabu Gebreyohannes (1) , Antoine Frappé (1, 2) , Andreas Kaiser (2, 1)

1 IEMN - Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520
2 MICROELEC SI - IEMN - Microélectronique Silicium - IEMN

IEEE 802.11ad (WiGig) is an emerging multi-Gb/s wireless standard in the unlicensed 60GHz spectrum. This work presents system level validation of a Single Carrier (SC), QPSK modulated WiGig transmitter based on a semi-digital Finite Impulse Response (FIR) Digital-to-Analog Converter (DAC). The 1.76GS/s complex baseband input signal is upsampled by two to a clock frequency of 3.52GHz. In order to introduce channel shaping and meet the standard requirements, the structure implements a 16 th -order direct-form Root-Raised Cosine (RRC) FIR filter. Transmit mask and EVM requirements are met with a large margin while allowing a 14% random mismatches on the current sources implementing the FIR DAC coefficients.

Domaines: Sciences de l'ingénieur [physics]

Fikre Tsigabu Gebreyohannes, Antoine Frappé, Andreas Kaiser. Semi-digital FIR DAC for low power single carrier IEEE 802.11ad 60GHz transmitter. 2015 IEEE 13th International New Circuits and Systems Conference (NEWCAS), Jun 2015, Grenoble, France. pp.1-4, ⟨10.1109/NEWCAS.2015.7182016⟩. ⟨hal-03377047⟩