HE321B/HEM321B/HES321B integrated broadband amplifiers are designed with active bias providing temperature compensation, good 50Ω impedance matching, easy cascading, thin film hybrid integration, stable and reliable electrical performance, and standard full-sealed tube shell packaging, meeting military temperature operating conditions: -55℃～+85℃
The manual details the performance features of the integrated broadband amplifier, including a frequency range of 10‑500 MHz, small‑signal gain of 25 dB at 10 MHz rising to 28 dB at 500 MHz, and VSWR ≤ 2.0:1. It also specifies operating temperature limits from –55 °C to +85 °C and maximum input power of +10 dBm.
Installation information covers the physical dimensions, recommended mounting methods, and connector pin assignments. Typical component values for input matching (C = 3.3‑22 pF, 3.3‑6.8 nF, 1 nF) are provided, along with a note that the circuit can be substituted with a compatible part from W‑] Company (A76). This manual is written in Chinese.
| Frequency range | 10‑500 MHz |
|---|---|
| Small‑signal gain | 25 dB (10 MHz) – 28 dB (500 MHz) |
| Gain flatness | ±0.5 dB |
| VSWR (input) | ≤ 2.0:1 |
| Operating temperature | -55 °C to +85 °C |
| Maximum input power | +10 dBm |
| Typical output power | 3 dBm |
The amplifier operates from –55 °C to +85 °C.
It covers 10 MHz to 500 MHz.
The gain is about 28 dB at 500 MHz.
The input VSWR is specified as ≤ 2.0:1.