LA20RPDC
Line Amplifier 20dB Gain Technical Product DataFeatures••••Very Low Noise Figure
o 1.05 dB NF typical at GPS L1.
Wide Accepted Frequency Rangeo Accepts signals from the entire L-Band,covering all major GNSS constellations.
Customizable Fixed Output Gaino Customizable from 1 dB to 20 dB.
High 1 dB compression point and 3rd orderintercept point.

Description
This Line Amplifier 20dB Regulated Pass DC (LA20RPDC) is an active one input, one output amplifier
optimized for GPS applications. This equipment accepts signals covering all major GNSS constellations
with excellent gain flatness and a very low noise figure. In the standard configuration, the J1 port
accepts DC voltage from a connected GPS receiver. This voltage is regulated and used to power theinternal amplifiers while unregulated voltage is passed through the antenna port to power a connected
active antenna or other upstream devices.
In the Networked (Externally Powered) configuration, the output (J1) is DC Blocked, and a customerdefined output voltage is provided via the antenna port. Custom gain, DC power, and connectorconfigurations are available upon request.
Use Cases• As an in-line amplifier to negate the insertion loss of a long cable run.
• As a low-noise preamplifier for a passive GNSS antenna.
• As an amplifier in a re-radiating system.
• In combination with one of our splitter devices to create a GPS distribution network.

Rev B

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

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LA20RPDC

Electrical Specifications, TA=25°C
General Specification
ParameterNotes

Min

Frequency RangeCovers all major GNSS constellations.

1.1

CharacteristicImpedance

Input and output ports matched to 50Ω.

Reverse Isolation

Attenuation applied signals traveling backwards through the amplifier: S12.

-50

Req. DC Input V.

Operating voltage range for non-networked units.

3.3

Current Draw

Typical current consumption.

GPS L1 & L2 RF Specification (1)TypMax

Unit

1.7

GHz50

Ω

-57

dB
1518

VDCmA

Parameter

Notes

Min

TypMaxUnit

Gain

The relative increase in signal power provided by the amplifier.

192021dB

Input SWR

Input Standing Wave Ratio: S11 at L1 and L2

1.7:1

2.0:1-Output SWR

Output Standing Wave Ratio: S22 at L1 and L2

1.7:1

2.0:1

-Noise Figure

The increase in noise power relative to an ideal amplifier.

L1:1.05
L2:1.1

Band Gain Flatness

The difference in loss or gain between the L1 and L2 frequencies.

0.5

Input P1dB

The 1dB compression point at L1.

-24

3rd Order Intercept

Third-order intercept point at L1.

-13.5

dB
1dB
dBm

(1): Performance is slightly reduced around GPS L5. If working on sensitive L5 applications, please request performance data.
External Power Options (Networked Option)
Voltage Input
110VAC
220VAC240VAC (United Kingdom)
Customer Supplied DC 9-32 VDC

Style
Transformer (ITA Type A Wall Mount)
Transformer (ITA Type C Wall Mount)Source Voltage Options
Transformer (ITA Type G Wall Mount)
MIL-DTL-5015 10SL DC Connector(Includes Mate)DC Voltage Out
Max Current out For Corresponding Vout
3.3 V
110mA
5V
130mA
9V
140mA
Output Voltage Options (2)
12V
180mA
15V
220mA
CustomCustomStandard DC Configuration without External Power Option
All Ports Pass DC
Standard DC Configuration with any External Power Option (AC/DC or Military DC)
J1 Port DC Blocked with 200Ω load standard
Antenna Port is DC PassConnector 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 B

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

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LA20RPDC

Part Number Configuration

Rev B

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

3LA20RPDCPerformance

LA20RPDC (Standard Gain)
Each LA20RPDC 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. Noise figure test
data is available upon request.

Rev B

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.