16-channel GPS antenna splitter

In several use cases there is a need for providing a GPS reference signal to a variety of device with built-in receivers. Running separate Antenna cables to each of those GPS receivers is often difficult and cumbersome.

This includes, for example

lab setups where many cellular base stations with GPS clock reference input are operated
lab setups wit a variety of measurement devices that utilized GPS disciplined reference clocks
in-building distribution of GPS RF signals

The sysmocom 16-channel GPS antenna RF splitter is the ideal solution for such setups. Its unparalleled number of 16 receiver-side RF ports allow for a large density of GPS receivers.

The GPS RF signal of a single GPS antenna (which can optionally be phantom powered by the splitter) is filtered, amplified, filtered again and then split (in two stages of 1:4 dividers) across 16 RF outputs.

Each output features an integrated DC-block and a dedicated LED to indicate if phantom voltage is supplied by the attached receiver or not. Supported biasing voltages on the output side are in the range of 3 .. 12V DC.

Form-Factors

The product is available in two form-factors

a stand-alone extruded aluminum desktop enclosure - useful for portable operation on a lab desk
as a module for a 3U component carrier - a perfect fit for larger rack-mounted lab installation or in-building GPS RF signal distribution

Technical Data

Electrical Specification

Supply Voltage	12V DC, provided either via 5.5/2.1mm barrel or internal 2.54mm header
Phantom Voltage to Antenna	Selectable via jumper (none, 3V, 5V, external)
Phantom Voltage from Receivers	Supported range from 3V .. 12V DC
Overall RF System Gain	8 dB typical @ 1.57542 GHz
Passband	1.57422 .. 1.57662 GHz
RF Isolation (between outputs)	20 dB (same 1:4 divider); 40 dB (different 1:4 dividers)
Filtering	>= 80 dB < 1.4 GHz and > 1.65 GHz >= 65 dB < 1.5 GHz and > 1.60 GHz
RF connectors	SMA, female, bulkhead mount
Internal Filters	2x EPCOS B39162B3520U410 reflective SAW filters
Internal LNA	1x 30 dB, 1.0 dB Noise Figure
Absolute Maximum Input RF Power	25 dBm
Operating Temperature	-40 to 85 centigrade

Mechanical Specifications

All dimensions exclude the protruding RF connectors!

Variant	3U compontent carrier	Desktop Enclosure
Dimensions (W x D x H)	128.4 mm x 50.8 mm (10 DU) x 45 mm	105 mm x 65 mm x 53 mm
Weight (net)	TBD	TBD
Order Code	gps-spl-16-bgt	gps-spl-16-koh