Elecbee ADS-B 1090MHz RF Front-End Low Noise Amplifier

Elecbee ADS-B 1090MHz RF Front-End Low Noise Amplifier

The Elecbee ADS-B 1090MHz RF front-end low-noise amplifier is designed for receive-side amplification of ADS-B and Mode S signals. It combines two low-noise amplifier stages with two dedicated filter stages to provide a supplier-specified gain of 38dB while suppressing signals outside the intended reception band.

The enclosed module operates from a 3.3–5.0V DC supply and is suitable for integration into compatible ADS-B receivers, software-defined radio systems, aircraft-tracking stations and 1090MHz RF development projects.

Technical Specifications

Product Type: ADS-B receiver RF front end
Operating Frequency: 1090MHz
Supported Reception: ADS-B and Mode S signals
Operating Voltage: 3.3–5.0V DC
Specified Amplification Gain: 38dB
Amplifier Architecture: Two low-noise amplifier stages
Filter Architecture: Two dedicated filter stages
Relative Response at ±50MHz Offset: −75dB, supplier specified
Relative Response at ±1GHz Offset: −55dB, supplier specified
Housing: CNC-machined enclosure
Dimensions: Approximately 51.5 × 36 × 15mm
Dimension Note: Connector projections are excluded
Product Weight: Approximately 60.5g

Specification note: The gain and out-of-band response figures are supplier-provided specifications. Measurement tolerance, noise figure, supply current, impedance and test conditions were not supplied.

Two-Stage RF Amplification

The signal path incorporates two low-noise amplifier stages that provide a specified total gain of 38dB. The module is intended to strengthen received 1090MHz signals before they enter a compatible ADS-B receiver or SDR.

Actual reception performance depends on the antenna, coaxial cable loss, installation position, local interference, power-supply quality and receiver input characteristics. High gain may overload some receivers when strong nearby signals are present, so receiver compatibility should be checked before installation.

Dual-Filter Signal Selection

Two dedicated filter stages are used to attenuate signals outside the intended 1090MHz reception band. This architecture helps limit unwanted RF energy reaching the receiver and can improve system performance in environments containing nearby out-of-band transmissions.

The supplier specifies a relative out-of-band response of −75dB at offsets of ±50MHz and −55dB at offsets of ±1GHz from the 1090MHz center frequency. These values should not be interpreted as guaranteed minimum rejection because the associated test setup and tolerances are unavailable.

Applications and Compatibility

This RF front-end module is suitable for compatible ADS-B ground receivers, SDR aircraft-tracking stations, Mode S monitoring systems, RF experiments and other receive-only applications centered on 1090MHz.

System compatibility: Verify the module’s physical connectors, DC supply polarity and connected receiver input limits before installation. Connector type and input/output impedance were not included in the supplied specifications and should be confirmed from the actual product.

Package Contents: 1 × Elecbee ADS-B 1090MHz RF Front-End Low Noise Amplifier