Digital Array Radar Technology for MPAR

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GaN HPA Integration on RF Antenna Panel Circulator Antenna feed LNA biasing GaN package RF switch HPA biasing SMA Package designed for GaN HPA/LNA combination MMIC integrated into Rogers 4350b PCB panel • 51W radiated, 42% efficient overall, 72°C on fancooled copper slug. 58.8W output into circulator @ 49% efficiency with 40V drain • 28W radiated, 40% efficient overall, 52.5°C on fancooled copper slug. 32.3W output into circulator @ 46% efficiency with 28V drain 5/2/2011 50
DAR Polarimetric Testbed V H • Aperture-coupled, stacked-patch antenna used for case study and tests – Designed for broadside cross-pol & port-to-port isolation (> -35 dB) – Lightweight, panelized, and has wide bandwidth (~3-3.6 GHz) – Rogers 4350b feed with Rogers 5880LZ top patch substrate – Similar to other proposed elements for MPAR (MIT LL/MaCom) 5/2/2011 51
Page 1 and 2: Digital Array Radar Technology for
Page 3 and 4: Introduction: Digital Array Radar P
Page 13 and 14: Future Digital Arrays • Lower cos
Page 15 and 16: MPAR Needs • Programmability •
Page 17 and 18: Cost • FPGAs subject to the same
Page 19 and 20: What Was State of the Art? Insert t
Page 21 and 22: ifixit.com 21
Page 23 and 24: The Challenge for a Low Cost Radar
Page 25 and 26: Compound Semiconductor Materials on
Page 27 and 28: Competition • By decoupling from
Page 29 and 30: Initial DAR Demonstrator 16-Element
Page 31 and 32: Initial DAR Demonstrator Two Channe
Page 33 and 34: Initial DAR Demonstrator Digital Ba
Page 35 and 36: DAR Digital Beamforming • Verifie
Page 37 and 38: Army DAR Project Digital Backend
Page 39 and 40: 5/2/2011 Adaptability 39 8 4 7 4 6
Page 41 and 42: 5/2/2011 Adaptability 41 Initial T
Page 43 and 44: Adaptability K T R T T 1 2 3 4 R 1
Page 45 and 46: Xcvr. Header Xcvr. Header Xcvr. Hea
Page 47 and 48: Xcvr. Header Xcvr. Header Xcvr. Hea
Page 49: GaN HPA Integration on RF Antenna P
Page 53 and 54: Scattering Demonstration 45° Tx Rx
Page 55 and 56: Scattering Demo Initial Results C T
Page 57 and 58: Receive Pattern Demo • Use mutual
Page 59 and 60: Receive Pattern Demo • Use mutual
Page 61 and 62: Large Array Simulations • Resulti
Page 63 and 64: Large Arrays with Random Errors Wor
Page 65 and 66: Large Arrays with Random Errors Wor
Page 67 and 68: Large Arrays with Random Errors 5/2
Page 69 and 70: Potential Re-Configurable HDB Capab
Page 71 and 72: Current Developments • DAR 1.0 -
Page 73 and 74: Current Developments • DAR 1.0 -
Page 75: Initial Conclusions and Plans • P

Digital Array Radar Technology for MPAR

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