L1/L2FPDC
GPS L1 & L2 Filter Technical Product DataFeatures••••Low Insertion Losso 1.75 dB typical for L1 & L2.
Powerful Low Frequency Rejectiono >40 dB typical below 1150 MHzHigher RF Power Handlingo Minimum 1W continuous.
L1 & L2 GNSS Compatibleo Supports all L1 and L2 GNSS
frequencies.

Description
This L1 and L2 Filter Pass DC (L1/L2FPDC) is a one input, one output passive RF filter for allcommon L1 and L2 GNSS signals. Ceramic resonators are utilized for enhanced high-power
performance. The L1/L2FPDC features low insertion loss, low ripple, and high rejection. In thestandard configuration, the J1 port passes DC voltage from a connected device to the antenna
through the ANTENNA port. Custom DC configuration and connector configuration are available uponrequest.

Use Cases• To protect GNSS receivers from out-of-band interference.
• To protect GNSS receivers from high-power signals.
• As part of a receiver test and measurement setup in a lab environment.

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

1

L1/L2FPDC
Electrical Specifications, TA=25C
General Specification
Parameter

Notes

MinMaxUnit

L1 Frequency Range

Covers all major L1 GNSS constellations.

1.530

Typ1.615

GHz

L2 Frequency Range

Covers L2 GPS and QZSS constellations.

1.206

1.238

GHz

Characteristic
Impedance

Unused ports should be terminated with 50Ω loads.

Insertion Loss

The loss that occurs from the input port to any output port.
S21 at the L1 & L2 center frequencies.

Input SWRΩ

50-2.5dB

Input Standing Wave Ratio: S112.0:1-Output SWR

Output Standing Wave Ratio: S22

2.0:1-L1 Bandwidth

The 3dB bandwidth of the filter for the L1 band.

L1 Rejection

Rejection at L1 ± 100 MHz

L2 Bandwidth

The 3dB bandwidth of the filter for the L1 band.

L2 Rejection

Rejection at L2 ± 100 MHz

-1.25

-1.75

85
1725

MHz
>40

3225

dB
MHz

30

>40

0.5

dB

RipplePassband Amplitude Ripple at L1 & L2 ± 10 MHz

1.25

dB

Max DC Input V.

Maximum Input Voltage Range.

32

VDC

Max Current

Maximum through current.

300mASource Voltage Options

External Power Options (Networked Option)
Voltage Input
110VAC220VAC
240VAC (United Kingdom)
Customer Supplied DC 9-32 VDC

Style
Transformer (ITA Type A Wall Mount)
Transformer (ITA Type C Wall Mount)
Transformer (ITA Type G Wall Mount)
MIL-DTL-5015 10SL DC Connector (IncludesMate)DC Voltage Out
Max Current out For Corresponding Vout
3.3 V
110mA
5V
130mA
9V
140mA
Output Voltage Options (2)
12V
170mA
15V
210mA
CustomCustomStandard DC Configuration without External Power Option
J1/Output 1 Pass DC, J2-J4/Output 2-4 Block DC, Input Pass DC
Standard DC Configuration with any External Power Option (AC/DC or Military DC)
All Outputs DC Blocked with 200Ω load standard
Any port can be custom selected to Pass or Block DC

Connector Options

Connector Style
Type N-female

ChargeNo Charge

Type SMA-female

No Charge

Type TNC-female

No Charge

Type BNC-female

No Charge

OtherContact GPS Networking(2):With Network Option, any RF port (input or output) can be specified to Pass DC or Block DC

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

2

L1/L2FPDCPart Number Configuration
L1/L2FPDC

L1/L2FPDC

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

3

L1/L2FPDC
Performance
L1/L2FPDC
Each L1/L2FPDC ships with a test sheet that verifies critical performance characteristics, such as
gain, input VSWR, and amplitude balance; a typical VNA test sheet is shown below.

Rev A

For sales or technical support contact us at 1-800-463-3063 or salestech@gpsnetworking.com

4MechanicalContact us at salestech@gpsnetworking.com for 3D models or CAD drawings.