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Manufacturing of a UHF Diplexer Low Noise Amplifier for the UAV Industry

Manufacturing of a UHF Diplexer Low Noise Amplifier
Manufacturing of a UHF Diplexer Low Noise Amplifier

Satellink is an accomplished supplier of state-of-the-art low noise linear amplifiers found in cutting edge applications. We designed and manufactured the UHF diplexer LNA for a customer in the unmanned aerial vehicle (UAV) industry, where lightweight construction, economically-sized packaging, and precision performance are critical. In addition to engineering, we sourced all the required components, assembled the devices, and applied a protective chromate conversion coating. Quality assurance protocols, conducted in accordance with MIL-STD-810, included functional testing as well as dimensional inspections and verification.

Featuring an EMI-shielding aluminum enclosure, this LNA provides transmit-receive functionality from a 5.37" in height, 4.50" in width, and 1.12" in depth package. Weighing only 2 lbs., it operates in the 248 to 270 MHz minimum frequency range and offers a low noise figure of 2.0 dB max. We designed it to withstand temperatures from -55°C to 71°C, 100% humidity conditions, and pressures at altitude of up to 70,000’. It was designed to provide 230,000 hours of stable, reliable operation.

Detailed operational and mechanical specifications can be found in the table below. If you are interested in learning more about this project or how our expertise can benefit your next application, contact us today.

Specifications of this UHF Diplexer Low Noise Amplifier

Capabilities Applied/Processes
Engineering Design
Component Sourcing
Chromate Conversion Coating - Protective Finish
Overall Part Dimensions
Height: 5.37"
Width: 4.50"
Depth: 1.12"
Receiver Characteristics
Frequency Range: 248 to 270 MHz minimum
VSWR: 2.0:1 Max; 1.5:1 typical
Noise Figure: 2.0 dB max
Gain: 26 dB min
Gain Flatness: 0.05 dB to 0.10 dB / 500 KHz
Gain Stability: ± 1 dB
Intercept Pt. 3rd order: ± 20 dBm min
Source/Load Stability: Unconditionally Stable
Input Gain Compression: 1dB max at -20 dBm input
Resistance to Overload: + 20 dBm
Rejection TRANS to RECVR: 50 dB
Max input signal level: + 20 dBm at ANT
Power Requirements: + 28 VDC power 150 mA max
Transmit Characteristics
Frequency Range: 248 to 270 MHz minimum
Insertion Loss (Mid Band): 0.8 dB Max
Insertion Loss (Full Band): 1.0 dB Max
VSWR 1.5:1 (290 to 400 MHz)
Input Transmission Power: + 22 dBW (290 to 400 MHz)
EMI Protection: Aluminum Enclosure
Mechanical Specifications
Weight: 2.0 lbs
J1 ANT: Type N Female
J2 REC: Type N Female
J3 TRANS: Type N Female
J4 Power: Type MS3102R10SL-3P
Reliability Calculation: 230,000 hours
Operating Altitude: up to 70,000’
Operating Humidity: up to 100% with condensation
Operating Temp: -55°C to 71°C
In process testing/inspection performed
Functional Testing, Physical Dimensional Inspections
Industry for Use
UAV - Unmanned Aerial Vehicles
Delivery/Turnaround Time
145 Calendar Days
Delivery Location
Standards Met
Customer Specifications, 2D CAD Drawing
Product Name
UHF Diplexer Low Noise Amplifier