GPS Antenna / Signal Splitter
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GPSL12 - GPS, GLONASS, Galileo Micro Splitter

2 Way, SMA, 1176.45 - 1602.00 MHz, 50 Ohm, Passive

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Micro GPS Signal Splitter, 2 Way, SMA

GPS signal splitter weighing only
21 grams, ideal for UAV/drone applications

  • GPS L1 - L5, GNSS, Galileo micro splitter
  • Low Insertion Loss (0.1 dB avg)
  • High Port to Port Isolation (25 dB avg)
  • Excellent VSWR (1.15 : 1 avg)
  • Micro-sized package weighs only 21 Grams
  • Tri Alloy SMA Female (Jack) 50 Ohm
2 Way Power Divider RF Input Ratings
Into Matched
Load VSWR's
In-Phase 180°
1.2 : 1 10 Watts 10 Watts
2.0 : 1 10 Watts 0.25 Watts
5 Watts 0.25 Watts
2 Way Power Combiner RF Input Ratings
Input Signals In-Phase 180°
Coherent 2 X 5 Watts 2 X 0.125 Watts
Non-Coherent 2 X 0.25 Watts
Micro-sized GPS Antenna Signal Splitter, 2 Way, SMA - Outline Drawing
Mechanical Specifications
Circuit Design ……… 
Passive Wilkinson; DC pass all ports
Connectors ……………  SMA Jack, 50 Ohm Coaxial
Body ……………………  Brass, Tri-Alloy Plate
Connector Pin …  Beryllium Copper, Gold Plate
Insulator ……………  PTFE, Virgin Electrical Grade
Housing …………………  Aluminum, Clear Chem Film
Operating Temp …  -65°C to +85°C
Weight ……………………  21 Grams

GPSL12 - SMA Female Micro GPS Splitter Specifications

Range (MHz)
Insertion Loss
above 3.01 dB
Isolation Input
1176.45-1602 0.3 dB max 0.1 dB max 2° max 18 dB min 1.25 : 1 max 1.15 : 1 max

GPSL12 - Micro-sized GPS Antenna Splitter Test Data

2 Way GPS Antenna Splitter, SMA - Insertion Loss
Insertion Loss Test Sweep for Model GPSL12 from INSTOCK Wireless.
2 Way GPS Antenna Splitter, SMA - Isolation
Isolation Test Sweep for Model GPSL12 from INSTOCK Wireless.
2 Way GPS Antenna Splitter, SMA - VSWR
Input Return Loss Test Sweep for Model GPSL12 from INSTOCK Wireless. Output Return Loss Test Sweep for Model GPSL12 from INSTOCK Wireless.

Input Return Loss

Output Return Loss

GPSL12 - Features & Benefits


GPSL12 is a two way, passive, GPS signal splitter ideal for splitting a GPS antenna signal between two receivers while providing a DC current path to power remotely located active GPS antennas from the receivers. Maximum voltage rating is 50 VDC; max current rating is 1000 mA. Furnished with SMA female connectors all ports. Being a "micro-sized" splitter, GPSL12 weighs only 21 grams and is suitable for applications requiring low-weight parts.


The heart of the unit is a precision designed and etched Wilkinson type microstrip circuit on a low loss, high frequency, dielectric substrate. Electrical performance is highlighted by 0.3 dB max insertion loss (above the 3.01 dB power split), 18 dB min isolation, 1.25:1 max input VSWR and 1.15:1 max output port VSWR. Equal power split and symmetry is displayed by 0.1 dB amplitude balance and 2 degrees phase balance. Narrow band RF performance over your frequency range may be even better. See 2 way micro GPS splitter test sweeps for details. DC block is specially designed to be RF transparent with negligible effect on performance.


Mechanical features include precision CNC, brass, 50 ohm SMA female coaxial connectors with tri alloy plating to ensure tarnish resistance and low PIM operation.Connector pins are gold plated beryllium copper for reliability and lowcontact resistance. Virgin electrical grade PTFE support insulators captivate the contact pins enabling trouble free coaxial connector mating. Long term operation and

superior shielding is assured by the rugged CNC machined aluminum housing with clear chemical film finish. Secure mounting is provided by two 0.125" dia (3.18 mm) through holes. RoHS construction includes no-lead solder and a finish free of hexavalent chromium.


Housing dimensions are 0.98" wide by 0.98" deep by 0.44" high (24.9 x 24.9 x 11.2 mm). The SMA female (jack) connectors extend 0.38" (9.5 mm) from the housing. Operating temperature range is from -65°C to +85°C. Weight is 21 grams. See 2 way Micro GPS signal splitter outline drawing for more information.


Model GPSL12 is a 2-way, passive, SMA, GNSS splitter covering all frequencies from 1176.45 to 1602.00 MHz with best-in-class performance for GPS L1, L2, L3, L4, L5, GLONASS and Galileo global navigation satellite positioning system applications, and is deployed worldwide.

Options / Additional Models

GPSL09: Micro GPS DC Blocking SMA splitter; DC block 2 ports.

GPSL10: Micro GPS DC Blocking SMA splitter; DC pass 1 port; DC block 1 port.

GPSL15: Micro GPS antenna signal splitter; DC pass 1 port; DC block 1 port w/ 200 ohm internal load.

GPSL18: Micro GPS signal splitter; DC block 2 ports w/ 200 ohm internal load.

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