SOC
ESP32
Lora IC
SX1262
Product Link
https://wiki.uniteng.com/en/meshtastic/station-g2
Description
Meshtastic
Mesh Device Station G2 is an upgraded design of Station G1, using the
latest ESP32 S3 MCU. As an RF research project, Station G2 also brings
key updates in RF. The primary RF design goal of Station G2 is to
improve the Lora receiving sensitivity by about 4dB based on a dedicated Ultra-Low Noise Figure LNA. And to increase the transmit power and improve Signal to Noise ratio of short data packets by designing the Fast-Transient DC-DC for 35dBm Lora PA.
For Lora Power Amplifier, the
1 dB Compression Point (P1dB) is 35 dBm (3.16 W), and the maximum RF
output power is 36.5 dBm (4.46 W) for US915 and 37 dBm (5 W) for EU868.
Station
G2 has a rugged SMA antenna socket and rich external IO interfaces. It
can be powered by either 15VDC USB Type C PD protocol or 9VDC-19VDC External Power Supply. These features make Station G2 ideally suited as a Fixed-Location Base Station or Vehicle-Mounted Base Station.
Features Comparison of Station G2 and Station G1
| Editions |
Station G2 |
Station G1 |
| Core Research Areas |
Ultra-Low Noise Figure LNA for LoRa
Fast-Transient DC-DC for LoRa PA |
Modern Cost-Effective RF Power Amplifier
RF Components/Materials Measurement and Modeling |
| Product Status |
ACTIVE |
OBSOLETE |
| Current Hardware Version |
18 Jan 2024 |
20 Sep 2022 |
| Initial Release Date |
18 Jan 2024 |
12 Jun 2022 |
| Lora RF Max Output Power |
Up to 35 dBm (P1dB Point) |
Up to 35 dBm (Maximum RF Output Power) |
| Frequency Reference for Lora |
32MHz TCXO (+-1.5 ppm) |
32MHz XTAL (+-10 ppm) |
| Lora Ultra-Low Noise Figure LNA |
Typical Gain: 18.5 dB, Typical Noise Figure: 1.8 dB |
- |
| Fast-Transient DC-DC for LoRa PA |
Transient Response Time < 18us, Maximum Transient Voltage Deviation < 275mV, Phase Margin > 66.73 Degrees, Ripple < 30mV, Test Condition: 0A-3A@7.5VDC Dynamic Test, Input Voltage 15VDC |
- |
| LoRa Transceiver |
SX1262 |
SX1262 |
| Lora Operation Frequency |
US915MHz / EU868MHz |
US915MHz / EU868MHz |
| MCU |
ESP32 S3 (Flash: 16MB, PSRAM: 8MB) |
ESP32 (Flash: 4MB, PSRAM: -) |
| WIFI |
YES |
YES |
| Bluetooth |
v5.0 |
v4.2 |
| Satellite Navigation |
Optional (1x GROVE GPS Socket) |
Optional |
| USB Connector |
Type C (PD Protocol) |
Type C (PD Protocol) |
| Screen |
1.3 Inch OLED Screen |
1.3 Inch OLED Screen |
| Battery |
- |
Optional 12V Battery Docker |
| Power Input Socket |
15VDC USB Type C PD protocol, 1x5P Pitch=1.5mm Socket (9VDC-19VDC External Power Supply) |
USB Type C, 1x2P Pitch=2.5mm Socket |
| LoRa Antenna |
SMA Socket |
SMA Socket |
| Accessories |
1x GROVE GPS Socket, 1x GROVE I2C Socket, 1x SparkFun QWIIC I2C Socket and 1x IO Extension Socket |
1x IO Extension Socket |
| Typical Scenarios |
Fixed-Location Base Stations and Vehicle-Mounted Base Stations |
Fixed-Location Base Stations and Vehicle-Mounted Base Stations |
SOC
ESP32
Lora IC
SX1262
Product Link
https://wiki.uniteng.com/en/meshtastic/station-g2
Description
Meshtastic Mesh Device Station G2 is an upgraded design of Station G1, using the latest ESP32 S3 MCU. As an RF research project, Station G2 also brings key updates in RF. The primary RF design goal of Station G2 is to improve the Lora receiving sensitivity by about 4dB based on a dedicated Ultra-Low Noise Figure LNA. And to increase the transmit power and improve Signal to Noise ratio of short data packets by designing the Fast-Transient DC-DC for 35dBm Lora PA.
For Lora Power Amplifier, the 1 dB Compression Point (P1dB) is 35 dBm (3.16 W), and the maximum RF output power is 36.5 dBm (4.46 W) for US915 and 37 dBm (5 W) for EU868.
Station G2 has a rugged SMA antenna socket and rich external IO interfaces. It can be powered by either 15VDC USB Type C PD protocol or 9VDC-19VDC External Power Supply. These features make Station G2 ideally suited as a Fixed-Location Base Station or Vehicle-Mounted Base Station.
Features Comparison of Station G2 and Station G1
Fast-Transient DC-DC for LoRa PA
RF Components/Materials Measurement and Modeling