ESPARGOS One
ESPARGOS One is our first antenna array for WiFi sensing, and a powerful tool for wireless research: eight phase-synchronized ESP32 chips, controlled and powered over Ethernet or USB, that stream real-time channel state information to your application.
Channel State Information
ESPARGOS provides Channel State Information (CSI) estimated from the L-LTF and HT-LTF pilot symbols in real time. Viewed in frequency domain, CSI contains information about the phase shift and attenuation experienced by the OFDM subcarriers. After a fourier transform, CSI can be interpreted as a channel impulse response. ESPARGOS supports channel bonding, achieving a bandwidth of up to 40 MHz.
Power over Ethernet
Avoid the hassle of running separate data, power and signalling cables: ESPARGOS is controlled over Ethernet, provides a simple web interface for configuration and can be powered from a power over ethernet (PoE) switch / injector. This makes ESPARGOS easy to use and deployments are quick to set up.
Python Library
With pyespargos, there is an easy-to-use library to control one or multiple ESPARGOS devices.
Configure ESPARGOS with the built-in web interface, and then easily stream channel state information to your application in real time.
The python library comes with a collection of demo applications to get you started.
Technical Specifications
- Provides phase-coherent CSI for 802.11g/n/ax packets
- Bandwidth: 20 MHz, or 40 MHz for 802.11n channel bonding
- 100BASE-TX Ethernet with PoE for data / power
- IEEE 802.3at Type 1 compliant PoE (class 3)
- 8× dual-polarized patch antennas (mixed linear / circular)
- Reference signal input / output for coherent multi-array setups
- λ / 2 antenna spacing (60mm)
- Power Consumption: ~3.5W
Further details are available in the datasheet.
Documentation & Downloads
Available Kits
ESPARGOS One ships in ready-made kits: the Core Kit contains a single antenna array, while the Aperture Kits combine multiple pre-mounted, phase-synchronized arrays into one large aperture for finer angular resolution. All kits arrive pre-configured and ready to measure.
Core Kit
A single ESPARGOS One antenna array with 8 dual-polarized antennas in a 4×2 grid. Controlled and powered over Ethernet (PoE) or USB, configured via the built-in web interface, it streams real-time phase-coherent CSI straight to your application. The ideal starting point for researchers, educators and early adopters.
In the box
- ESPARGOS One antenna array
- 2 m network cable
- Printed Quick Start Manual
Aperture Kit 6×4
Three ESPARGOS One arrays pre-wired into one phase-coherent 6×4 aperture: 24 dual-polarized antennas at λ/2 spacing, reference signal distributed internally. Only Ethernet to wire up.
In the box
- Pre-assembled 6×4 aperture (three arrays on a common bracket)
- Spigot clamp (16 mm) for tripod mounting
- 3× 2 m network cable
- Printed Quick Start Manual and configuration supplement
Aperture Kit 8×4
Four ESPARGOS One arrays pre-wired into one phase-coherent 8×4 aperture: 32 dual-polarized antennas at λ/2 spacing, our largest ready-made aperture. Only Ethernet to wire up.
In the box
- Pre-assembled 8×4 aperture (four arrays on a common bracket)
- Spigot clamp (16 mm) for tripod mounting
- 4× 2 m network cable
- Printed Quick Start Manual and configuration supplement