mmWave Radio

A key feature of the COSMOS platform is the integration of fully-programmable, high-performance SDR nodes with mmWave phased arrays. While there has been significant industrial and academic research on silicon-based mmWave phased array RFICs dating back to 2004, it is only recently that we are seeing commercial-grade mmWave phased arrays suitable for deployment in testbeds. Leveraging our ongoing partnership with IBM, the COSMOS platform will include mmWave nodes operating at both 28 and 60 GHz. The IBM 28GHz phased-array antenna module (PAAM) features 4 tiled RFICs supporting 64 dual-polarized antennas, 8 beams enabling hybrid analog-digital beamforming and MIMO, 30 degrees steerable beamwidth, 43 dBm EIRP, and up to 3 GHz IF. Another key aspect of the IBM 28GHz PAAM is the orthogonal amplitude and phase control enabled by (i) a gain-invariant phase-shifter design and phase-invariant variable-gain amplifier, and (ii) a careful antenna-array-in-package design the eliminates gain and phase mismatches. The front-end will offer rich programmability, including full access to the beamforming control, and latency as low as 10s of ns for low latency MAC and hybrid beamforming.

COSMOS is part of the National Science Foundation’s PAWR program and is funded in part by NSF award CNS-1827923 and by the PAWR Industry Consortium.

Rutgers University.

Dipankar Raychaudhuri and Ivan Seskar
671 Route 1 South
North Brunswick, NJ 08902-3390

Columbia University

Gill Zussman
Electrical Engineering, M.C. 4712
500 West 120th Street, Room 1300
New York, NY 10027

New York University

Sundeep Rangan
2 MetroTech Center, 9th Fl,
Brooklyn, NY 11201


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