HE387D/HEM387D integrated wideband amplifier is a high-efficiency, large-dynamic RF/microwave integrated amplifier with a working frequency range of 100-700MHz. It uses an active bias design to provide temperature compensation, good 50Ω impedance matching, and is easy to cascade. It uses a standard hermetic metal tube shell package that meets military temperature operating conditions: -55℃~+85℃
The HE387D/HEM387D is an RF/microwave integrated broadband amplifier covering 100 MHz to 700 MHz with high efficiency and a typical gain of 22 dB. It features active bias temperature compensation, 50 Ω impedance matching, and a sealed metal‑tube package suitable for military temperature ranges (‑55 °C to +85 °C).\n\nThis manual includes performance curves, detailed specifications, wiring diagrams, and installation guidance. It lists limit parameters, linear output power, supply requirements, and notes on using a 12 V supply. Physical dimensions and optional SMA‑output box packaging are also described. This manual is written in Chinese.
| Frequency range | 100–700 MHz |
|---|---|
| Typical small‑signal gain | 22.0 dB |
| Gain flatness | ≤ 1.0 dB |
| Noise figure | ≤ 3.8 dB |
| Input VSWR | ≤ 1.5:1 |
| Output VSWR | ≤ 1.5:1 |
| Linear output power (typical) | 21.0 dBm |
| Operating current | 55 mA |
| Maximum supply voltage | +18 VDC |
| Maximum input power | +7 dBm |
| Storage temperature limit | +125 °C |
| Operating temperature range | -55 °C to +85 °C |
It operates from 100 MHz to 700 MHz.
The typical gain is 22.0 dB (minimum 21.0 dB).
The maximum supply voltage is +18 VDC.
Yes; at 12 V the gain drops about 0.2 dB and output power drops 2.5 dB, with a typical current of 45 mA.