Group 1: Materials, Resonators & Resonator Circuits
• Fundamental properties of materials
• Micro and meso-scale fabrication technology for resonators and filters
• Theory, design and performance of resonators and filters, including BAW, FBAR,
MEMS, NEMS, SAW, 2D materials, and novel devices
• Reconfigurable frequency control circuits, e.g. arrays, channelizers
• Opto-mechanical resonators

Group 2: Oscillators, Synthesizers, Noise, & Circuit Techniques
• Oscillators, BAW, SAW, MEMS, microwave & optical
• Integrated oscillators
• Synthesizers, optical to microwave and RF conversion with combs
• Noise, aging and measurements
• Analog and digital electronics and signal processing

Group 3: Microwave Frequency Standards & Applications
• Microwave atomic frequency standards
• Atomic clocks for space applications
• Vapor-cell atomic clocks and cell-based sensors and instruments
• Atomic interferometers
• Fundamental physics tests with clocks and other applications

Group 4: Sensors & Transducers
• Resonant chemical sensors
• Resonant physical sensors
• Vibratory gyroscopes and magnetometers
• BAW, SAW, FBAR and MEMS sensors
• Transducers
• Sensor instrumentation

Group 5: Timekeeping, Time & Frequency Transfer, GNSS Applications
• TAI & time scales and associated algorithms
• GNSS and related timing applications
• Telecommunications network synchronization
• Time and frequency transfer
• Frequency and time distribution
• Frequency and time calibration services

Group 6: Optical Frequency Standards & Applications
• Optical ion and neutral atom clocks
• Optical frequency combs and frequency measurements
• Ultra-stable laser sources and optical frequency references
• Ultra-stable frequency transfer between optical, microwave, THz and XUV domains
• Fundamental physics tests with accurate optical spectroscopy, other applications