GEM1305

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GEM1305-4540A00

GEM1305 dual-band RTK smart antenna

GEM1305 is a high performance dual-band RTK module with build-in antenna, which is based on TAU1312.
It supports BDS-3 signals, along with global civil navigation systems, including GPS, BDS, GLONASS, Galileo, QZSS, and SBAS.


Feature

  • Supports GPS, BDS, GLONASS, Galileo, QZSS, and SBAS
  • Integrated Real Time Kinematics (RTK)
  • State-of-the-art low power consumption design
  • Supports multi-band multi-system high precision raw data output, easy for 3rd party integration
  • The best cost-effective high precision GNSS positioning solution integrated with antenna
  • Compact size 55*55*15mm with high performance


Specifications

Item Specs
Frequency Range(MHz) GPS/QZSS L1,L5, BDS B1,B2,
GLONASS L1, GALILEO E1/E5a
Polarization Right-hand circular
Gain(dBi) 90° L1≥5.5 L2≥5 L5≥2.5
Phase center error(mm) ≤±2.0
Axial Ratio (dB) 90°≤3.0
LNA Gain(dB) 38±2
V.S.W.R ≤2.0
Noise Figure (dB) ≤1.8
DC Voltage (V) 5.0~5.5
Current (mA) ≤80mA
Impedance(Ω) 50
Relative Humidity 95%
Operating Temperature(℃) -40~+85
Storage Temperature (℃) -55~+85
Dimensions(mm) 55 x 55 x 13
Weight (g) 85g


Hardware Description

GEM1305 dual-band RTK smart antenna

Pitch connector 2.54mm (left side of above picture)

  • 3.3V
  • NC
  • Tx, TTL level of GNSS module
  • Rx, TTL level of GNSS module
  • GND

This 2.54 pitch connector is the input/output data connector, support power supply 3.3v for external module like Bluetooth, Radio.

Connector JST 1.25 5pin / 2.54 pitch connector is the main power supply and input/output connector:

  • GND
  • NC
  • RX,TTL level of GNSS module
  • TX,TTL level of GNSS module
  • 5V, input,max current:200mA


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