Low-noise amplifier LNA 0.05–6 GHz, 20 dB, SMA, in aluminium housing

Product detailed description

The low noise amplifier (LNA) for the 50 MHz to 6 GHz band, featuring a gain of 20 dB and a typical noise figure of 0.6 dB, is designed to amplify weak signals from an antenna before they reach a receiver, SDR, or measuring instrument. The gain is flat across the entire band (±1 dB), making the amplifier universally suitable from VHF through 433/868 MHz, ADS-B, and GNSS up to 2.4 and 5.8 GHz. The electronics are enclosed in a rugged aluminium housing that shields them from interference; the signal is connected via SMA (female) connectors and the 5 V power supply is delivered via feed-through solder terminals. Thanks to its low noise, it is primarily suited as the first stage directly at the antenna, where it has the greatest impact on the sensitivity of the entire receiving chain.

Specifications:

• Manufacturer: QYMW (Qiyuan Microwave)
• Model: XQY-LNA-0.05/6-G20-5V-SZ (QY-LNA-0.05/6-G20-5V-SZ)
• Frequency range: 50 MHz – 6 GHz
• Gain: 20 dB ±1 dB
• Noise figure:
  • typ. 0.6 dB (50 MHz – 5 GHz)
  • typ. 1.6 dB (5–6 GHz)
• VSWR:
  • Input: ≤ 2.0
  • Output: ≤ 2.0
• Impedance: 50 Ω
• Output power P1dB:
  • ≥ 16 dBm (50 MHz – 5 GHz)
  • ≥ 14 dBm (5–6 GHz)
• Output third-order intercept point (OIP3): ≥ 30 dBm
• Max. input level: 30 dBm (higher power will destroy the amplifier)
• Power supply: 5 V DC, typ. current consumption 80 mA
• Connection:
  • RFin: SMA female – signal input (from antenna)
  • RFout: SMA female – amplified signal output (to receiver)
  • Power supply: feed-through solder terminals on the side of the enclosure
• Enclosure: aluminium, sandblasted, with a conductive surface finish, shielded
• Operating temperature: −40 °C to +105 °C
• Dimensions:
  • Enclosure: 36.4 × 27 × 11.5 mm (without connectors)
  • Mounting holes: 4× Ø 3 mm, pitch 31.8 × 22.4 mm
• Suitable for USB power supply:
  • USB-C angled power connector with 15 cm cable
• Typical applications:
  • preamplifier for SDR receivers (RTL-SDR, HackRF, Airspy, PlutoSDR etc.)
  • amplification of weak antenna signals (VHF, 433/868/915 MHz, ADS-B 1090 MHz, GNSS, 2.4 and 5.8 GHz)
  • measurement and laboratory work with weak RF signals

Important wiring notice:

• Connect both the input (RFin) and output (RFout) first, and only then connect the power supply. Do not connect or disconnect coaxial cables while the amplifier is powered.
• Observe the polarity and the 5 V voltage – reverse polarity or higher voltage will damage the amplifier.
• Observe the signal direction – RFin is the input, RFout is the output.
• The amplifier is designed for reception; it is not a final stage for transmission. Never apply power exceeding 30 dBm to the input (e.g. directly from a transmitter).

Package contents:

• 1× LNA low-noise amplifier 0.05–6 GHz in an aluminium enclosure

Note:

• This product is not a standalone functional unit and may require professional installation.
• Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.