This RD35HUF2 single-stage amplifier with f=135-175MHz evaluation board application note introduces the features of the evaluation board, including frequency range, input power, output power, quiescent current, operating current, etc.
The document provides an overview of the RD35HUF2 single‑stage amplifier evaluation board, covering its frequency range of 135‑175 MHz, typical input power of 3 W, typical output power of 40 W, and current requirements. It also lists the board dimensions (75 mm × 46 mm) and substrate details.
Detailed sections include PCB layout drawings, standard land‑pattern dimensions, a full component list, thermal‑design calculations for the heat sink, and performance graphs such as DC power‑supply versus output power and drain efficiency.
| Frequency range | 135‑175 MHz |
|---|---|
| Typical input power | 3 W |
| Typical output power | 40 W |
| Quiescent current | 500 mA |
| Operating current | ≈5 A |
| Board outline | 75 mm × 46 mm |
| Substrate total thickness | 1.6 mm |
| Copper thickness (Layer 1) | 43 µm with gold plating |
| Recommended heat‑sink thermal resistance | < 1.2 °C/W |
The board operates from 135 MHz to 175 MHz.
It delivers a typical output power of 40 W.
The heat sink should have a thermal resistance much smaller than 1.2 °C/W to keep the junction temperature below the allowed limit.
The board outline is 75 mm by 46 mm.