GNSS Antenna Splitter - Antenna Splitter with DC Pass Function

Description

The GNSS Splitter is an antenna splitter that allows a single GNSS antenna to be connected to two devices or modules. It evenly distributes the antenna signal from port S between ports 1 and 2, making it an ideal addition to the NEO-D9S correction data receiver. This setup enables both the NEO-D9S and a separate GNSS module to share one antenna. The splitter is based on the BP2G1+ chip by Mini-Circuits, a 50Ω DC Pass bidirectional signal splitter that operates in the L-band, covering a frequency range of 1200 to 2000 MHz.

The ports are fitted with robust SMA connectors. By default, the splitter passes DC power from port 1 to the antenna (port S), allowing for the use of an active antenna. Power routing is easily customizable: by opening Jumper 1 and closing Jumper 2, power can be routed from port 2, and the antenna can also be powered via the Qwiic connector or VCC and GND pins. The module can also work as a passive splitter without the need for power.

The module features a 10Ω current-limiting resistor to protect against short circuits in the antenna cable. If the antenna requires more than 30mA, Jumper Ilim can be closed to bypass the resistor and provide more power. This makes the GNSS Splitter a versatile solution for flexible antenna connections in a variety of projects.

Features

• 2-channel 50Ω power splitter with DC Pass functionality
• Frequency range: 1200 to 2000 MHz
• Three SMA connectors (standard polarization) for the antenna (Port S), Port 1, and Port 2
• Optional male-to-male SMA adapters available as accessories
• Supported power sources:
  • Port 1 (default)
  • Port 2
  • Qwiic connector (3.3V)
  • VCC and GND pins
  • No power (passive mode with Jumper 1 open)
• Two mounting holes for 4/40 UNC or 3mm screws