38166 Old Stage Road Delmar, DE 19940

Phone 302.462.3500 Fax 302.846.3888

www.spectrummicrowave.com

Last Revision: 11/20/2012

312 Series

Pre-Filtered GPS LNA

Typical Applications

Key Features

Inline Booster

Satellite Navigation

Avionics

Marine Navigation

Survey/Mapping

Military

Pre-Filtered

Low Noise Figure, 1.8 dB Typical

Wide Input Voltage Range

Qualified to many MIL-STD-810 & MIL-STD-461

Requirements

Small Lightweight Hermetic Package

Additional non-standard features available, contact

factory

Description

The 312 series pre-filtered GPS LNA module is designed

to amplify GPS signals while protecting the front end of

the GPS receiver by filtering out interferers from an

increasingly crowded EM spectrum. The module

leverages Spectrum Microwave's core competencies in

low-loss filter, amplifier and mechanical design that

results in a module that maximizes out of band

rejection while minimizing system noise figure and

maintaining a small size. The pre-filtered GPS LNA is

offered in a wide range of performance options

including GPS band configuration, gain level, supply

voltage, multiple outputs and input and output

connectors.

Electrical Specifications

Parameter

Min.

Typ.

Max.

Units

Frequency Range

L1, L1/L2, L5, L1/L5

N/A

Gain ± 2dB

16, 19, 22, 25, 28, 31, 34, 37, 40

dB

Noise Figure

1.8

2.5

dB

OP1dB

-3

0

1

dBm

OIP3

+7

1

dBm

Rejection

f ≤ 1050 MHz

f = 1410 MHz

f ≥ 1730 MHz

-40

-45

dBc

Input Return Loss

-9.5

-17.7

dB

Output Return Loss

-9.5

-14.0

dB

Group Delay Variation

2

±2

ns

Supply Voltage

Standard

Low-Voltage

5

3.3

32

5

V

Supply Current (Icc)

53

75

mA

1. Gain configuration dependant, 2. Group Delay Variation over GPS Bands