Tag Archives: LNA 2m EME

High OIP3 LNA EME ATF-531P8 with BPF filter for 2m 70cm bands

LNA 2m EME

In this project we created all-purpose LNAs for all QSO types (Tropo, Contest, EME, etc.) for 2m and 70cm bands. LNA was designed using ATF-531P8 E-pHEMT with High IP3 (37 dBm). Noise figure is much better than on PGA103+ or SPF5189z for 2m band (< 0.2dB). ATF-531P8 E-pHEMT is more reliable than low power ATF-54143 (SAV-541+). The location of the band-pass filter on LNA’s output allows to suppress the FM band and adjacent bands that close to FM band.

LNA-2m

  • Model: LNA-2m-EME
  • Based on: ATF-531P8
  • Gain: 24 dB
  • Noise Figure: < 0.3 dB
  • Output IP3: 37 dBm
  • Filter BW(-3 dB): 15 MHz
  • P input max: 24 dBm
  • DC voltage: 9 – 12 V
  • DC current: < 140 mA
  • Impedance: 50 ohms
  • RF connectors: N-female or SMA-female
  • Dimensions: 72 mm x 43 mm x 20 mm (w/o connectors)
  • Weight: 0.15 kg

LNA-70cm

  • Model: LNA-70cm-EME
  • Based on: ATF-531P8
  • Gain: > 20 dB
  • Noise figure: < 0.4 dB at 432 MHz
  • OIP3: 37 dBm
  • Filter BW(-3 dB): < 60 MHz
  • P input: 24 dBm (max)
  • Supply operation: 9 — 12 V DC , IDQ < 140 mA
  • Inpedance: 50 ohms
  • RF connectors: N-female (by default) or SMA-female (by request)
  • Dimensions: 72 mm x 43 mm x 20 mm (w/o connectors)
  • Weight: 0.15 kg

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