ISACSafety RF Exposure Compliance, SAR Monitoring & Beam Nulling

ISACSafety ensures human electromagnetic safety in multi-gigabit high-power 6G ISAC deployments, actively monitoring Specific Absorption Rate (SAR) limits and projecting real-time RF nulls around detected people.

ISACSafety Real-Time SAR Mitigation Architecture

ISAC Core: SAR Safety Core — Human Presence Tracking & Power Nulling

6G ISAC Nodes & Beamforming Subsystems

Human Radar Micro-Doppler Detector
Spatial EIRP Safety Governor
Dynamic Beam Pattern Nuller
ICNIRP 2020 Regulatory Engine
Continuous Multi-Band Exposure Log

Architectural Layers & Waveform Pipelines

Layer 1: Dual-Functional Waveform & Baseband (OTFS / OFDM-Radar / Fractional Fourier Transform / Ambiguity Function): Orthogonal Time Frequency Space (OTFS) modulation and fractional chirp synthesis achieving zero inter-carrier interference under severe Doppler spreads.
Layer 2: Massive MIMO & Beamforming Frontends (140 GHz D-Band / True-Time-Delay (TTD) / Hybrid Analog-Digital Beamforming): Sub-THz active phased array architectures with true-time-delay beam-squint mitigation, simultaneous communication data beams and pencil radar tracking lobes.
Layer 3: Radar Signal Processing & 4D Point Cloud (2D-FFT Range-Doppler / MUSIC AoA / CFAR Detection / Micro-Doppler Extraction): Sub-decimeter range and velocity resolution, constant false-alarm rate (CFAR) detection, and micro-Doppler biomechanical gait and drone propeller classification.
Layer 4: Network Sensing Orchestration & 3GPP Rel-19 (3GPP Rel-19 ISAC Core / Sensing Function (SF) / Reconfigurable Intelligent Surfaces (RIS)): Cell-free collaborative radar networks, dynamic time-frequency resource allocation balancing communication SLA against radar revisit time.

Sensing Telemetry & Benchmarks: <5 cm (Range Resolution) | 0.1 m/s (Velocity Precision) | <10 ms (Radar Frame Latency) | 3GPP Rel-19 (Global Standard)

ICNIRP Human Exposure Limits & Real-Time Beam Nulling in ISACSafety

As 6G cellular networks push into higher frequencies (FR2 mmWave and FR3 upper mid-band) with massive antenna arrays and high equivalent isotropically radiated power (EIRP), strict human electromagnetic safety regulations must be observed. ISACSafety leverages integrated radar capabilities to identify pedestrian presence, human bodies, and biological targets, dynamically steering RF energy away while sustaining connectivity.

Core Engineering Areas

Real-Time Specific Absorption Rate (SAR) Calculation and Multi-Band Tracking — Real-time computational electrodynamics calculating localized SAR and whole-body power absorption across millimeter-wave and sub-THz frequencies.
Dynamic Spatial Beam Nulling for Detected Pedestrians and Bystanders — Using integrated radar echoes to detect human coordinates and synthesize deep spatial radiation nulls (>30 dB attenuation) toward people.
Continuous Multi-Band Exposure Logging and Regulatory Audit Interlocks — Cryptographically signed radiation safety telemetry and fail-safe power shutdown interlocks for urban small-cell base stations.