[Board]: Nano G2 Ultra

[neilhao]

SOC

NRF52

Lora IC

SX1262

Product Link

https://wiki.uniteng.com/en/meshtastic/nano-g2-ultra

Description

The primary design goal of the Meshtastic[2] Mesh Device Nano G2 Ultra is to reduce power consumption and improve battery life by using the low power MCU NRF52840 and optimizing the power relatived designs. The typical battery life is optimized to be about 3.5 days. Nano G2 Ultra and Nano G1 Explorer have exactly the same Lora front-end circuit design and internal wideband Lora antenna, which supports frequencies from 815 Mhz to 940 Mhz. The wideband antenna, combined with an optimized wideband Lora RF frontend circuit, enables the Nano G2 Ultra to work with the majority of regions' LoRa frequency bands around the world without the need for antenna changes. The design of the Nano G2 Ultra also takes into account the potential effect of the human body on its antenna performance, ensuring optimal RF performance even when carried in a pocket.

Power Consumption and Features Comparison of Nano G2 Ultra and Nano G1 Explorer

Editions	Nano G2 Ultra	Nano G1 Explorer
Core Research Areas	Low Power Design	Human Body Near Antenna (HBN) Wideband High Radiation Efficiency Planar Antenna and RF Front-end Design
Product Status	ACTIVE	ACTIVE
Current Hardware Version	19 Jun 2023	06 Mar 2023
Lora RF Max Output Power	Up to 22 dBm	Up to 22 dBm
LoRa Transceiver	SX1262	SX1262
Lora Operation Frequency	Wideband from 815 Mhz to 940 Mhz	Wideband from 815 Mhz to 940 Mhz
MCU	NRF52840	ESP32
WIFI	-	YES
Bluetooth	v5.4	v4.2
Satellite Navigation	GPS, BDS	GPS, BDS
Real-Time Clock (RTC)	NXP PCF8563	-
USB Connector	Type C	Type C
Screen	1.3 Inch OLED Screen	1.3 Inch OLED Screen
Battery	Optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery	Optional 3.7V 603450 JST 1.25mm Rechargeable Li-Polymer Battery
Power Input Socket	USB Type C, JST 1.25mm Connector for Rechargeable Li-Polymer Battery	USB Type C, JST 1.25mm Connector for Rechargeable Li-Polymer Battery
Antenna	Build In Wideband PCB Antenna	Build In Wideband PCB Antenna
Accessories	Build In 10 Pin FPC Connector (0.5mm Pitch, 1x I2C, 6x GPIO, VCC3V3 and GND)Optional I2C Extension Board (1x GROVE I2C Socket and 1x SparkFun QWIIC I2C Socket for Sensors and Keyboard)	-
Typical Average Power Consumption	14.24 mA @ 4.3V (Lora TX Power = 22 dBm, GPS OFF, Screen OFF, Two Nodes in Network)	70.50 mA @ 4.3V (Lora TX Power = 22 dBm, GPS Low Power Mode, Screen OFF, Two Nodes in Network)
Typical Scenarios	Hiking, Pilot, Skiing, Work with the majority of regions' LoRa frequency bands around the world without the need for Antenna changes. The typical battery life is optimized to be about 3.5 days.	Hiking, Pilot, Skiing, Work with the majority of regions' LoRa frequency bands around the world without the need for Antenna changes. The typical battery life is optimized to be about 16 Hours.

In general, Nano G2 Ultra is not designed to replace Nano G1 Explorer, Nano G2 Ultra focuses on low power, and Nano G1 Explorer supports WIFI.

Typical RF Performance

Item	Description
Lora Operation Frequency	815 Mhz to 940 Mhz
Lora Max RF Output Power	22 dBm
VSWR of Lora PCB Antenna	< =1.5 @ 915 MHz and 868Mhz
Gain of Lora PCB Antenna	2.0 dBi, Omni-directional
Impedance Bandwidth of Lora PCB Antenna	815 Mhz to 940 Mhz for VSWR < = 2
Polarization of Lora PCB Antenna	Linear
High-Precision Frequency Reference for Lora	32MHz TCXO (+-1.5 ppm)
Positioning And Navigation Module	Build-in GPS Module, LNA and Omni-directional Antenna. GPS and BDS are supported
VSWR of GPS PCB Antenna	< =2 @ 1575.42 MHz, GPS L1 Band
Impedance Bandwidth of GPS PCB Antenna	1474 Mhz to 1590 Mhz for VSWR <= 2

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