Low Noise Amplifiers (LNA) with Bandpass Pre-Filtering

L4000 are Low Noise Amplifiers with bandpass pre-filtering for outdoor operation.

The LNA features low noise figure, high passband gain, and excellent outband rejection. The series includes models to cover different UHF, L, and S bands.

Typically placed close to a passive antenna, L4000 fixes the system noise figure, improving receiver sensitivity while protecting the next stages against out-of-band interference and jamming.

The amplifiers have a rugged design for operating in harsh environments, including IP67 aluminium enclosure, extended temperature range, and vibration/shock robustness.

L4000 Filtered Low Noise Amplifier - Diagram

L4000 Filtered LNA

Part Number Passband Frequency, MHz Gain, dB Gain Flatness, dB Noise Figure, dB
Min. Max. Typ. vs Freq. vs Temp. Typ.
L4000-0772 760 785 20.3 ± 0.1 ± 0.7 2.3
L4000-0845 790 900 20.6 ± 0.3 ± 0.9 1.7
L4000-0885 855 915 20.2 ± 0.2 ± 0.8 2.0
L4000-0912 890 935 19.8 ± 0.2 ± 0.9 2.3
L4000-0935 890 980 19.6 ± 0.5 ± 1.2 2.0
L4000-1020 950 1090 18.4 ± 0.9 ± 1.5 1.8
L4000-1055 995 1115 17.8 ± 0.5 ± 1.2 1.9
L4000-1090 1060 1120 17.5 ± 0.1 ± 0.7 2.2
L4000-1175 1100 1250 17.3 ± 0.7 ± 1.3 1.8
L4000-1220 1130 1310 16.8 ± 0.6 ± 1.3 1.9
L4000-1227 1205 1250 16.3 ± 0.2 ± 0.8 2.4
L4000-1230 1100 1360 16.9 ± 0.8 ± 1.4 1.8
L4000-1250 1180 1320 16.5 ± 0.2 ± 0.8 2.0
L4000-1255 1210 1300 16.2 ± 0.2 ± 0.8 2.1
L4000-1290 1140 1440 16.7 ± 0.5 ± 1.1 1.8
L4000-1307 1215 1400 16.5 ± 0.2 ± 0.8 1.8
L4000-1350 1300 1400 16.2 ± 0.2 ± 0.8 2.1
L4000-1555 1525 1585 15.7 ± 0.1 ± 0.7 2.2
L4000-1755 1710 1800 15.9 ± 0.1 ± 0.7 2.0
L4000-1950 1900 2020 15.4 ± 0.2 ± 0.8 2.2
L4000-2225 2000 2450 14.0 ± 1.2 ± 1.8 2.0
L4000-2400 2150 2650 13.0 ± 1.1 ± 1.9 2.3

L4000 Filtered LNA

Electrical

Output 1 dB Compression, P1dB 20 dBm (min.)
Supply Voltage, VDC +3.3V to +7V
Supply Current, VDC=5V 70 mA (typ.)

Maximum Ratings

Supply Voltage, VDC +8V
RF Input Power 20 dBm
Operating Temperature -40ºC…+85ºC
Storage Temperature -55ºC…+100ºC

Mechanical

RF Connectors N-type 50W
Power Supply Connector BNC 50W
Dimensions 85x60x29.5 mm
Weight 245 g
Enclosure Material Aluminium

Environmental

Ingress Protection Rating IP67
Temperature, Vibration, Shock MIL-STD-810
EMI/EMC MIL-STD-461
RoHS Yes

L4000 Outline Drawing

L4000 Filtered Low Noise Amplifier - Outline Drawing
L4000 Filtered Low Noise Amplifiers - Enclosure
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Key Features
  •  UHF, L, and S bands
  •  Low Noise Figure
  •  High Passband Gain
  •  Excellent Outband Rejection
  •  IP67 for Outdoor Operation
  •  Environmental Robustness
Applications
  •  Wireless Data Links
  •  Base Station Transceivers
  •  Airborne Receivers
  •  Radar & Navigation Systems
  •  GPS, Galileo, GLONASS
  •  Radio Astronomy
  •  ISM Radio Bands
  •  Wi-Fi, WIMAX
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