H4W1A1
2.3–7 GHz, 0.25 W, 25 dB Gain, GaN MMIC Power Amplifier for Wi-Fi Infrastructure, UAS, and S-Band Radar

Description
The H4W1A1 is a high-performance, linear GaN MMIC power amplifier designed for Wi-Fi infrastructure, unmanned aerial systems (UAS), and S-band radar. The amplifier delivers 0.25 W of RF output power across a bandwidth of 2.3 to 7 GHz with exceptional linearity and 50 ohm matched input and output impedances — no external matching elements required.
Housed in a compact 4 mm x 5 mm QFN package, the H4W1A1 requires only four external pins for all connections including RF input, RF output, and multi-stage gate and drain supply voltages. This minimises PCB footprint and simplifies board design for cost-sensitive applications.
Unconditional RF stability is guaranteed from DC to 40 GHz, making the device suitable for demanding system environments where stability margins are critical.
Features
- 25 dB small signal gain with ±1.5 dB flatness across 2.3–7 GHz
- 24 dBm output power
- Unconditional RF stability from DC to 40 GHz
- 50 Ω matched at input and output pins — no external matching required
- Single VGG and VDD supply pins for all transistor stages
- ESD protection
- QFN 4×5 mm, 24-lead package
- Only 4 external pins required for all connections
Applications
- Wi-Fi Infrastructure
- Unmanned Aerial Systems (UAS)
- S-Band Radar
- Electronic Warfare
Acknowledgment of Country - MILLIBEAM acknowledges the Traditional Custodians of the lands throughout Australia where we live and work today. We celebrate the diversity of Aboriginal peoples and their ongoing cultures and connections to land, sea and community. We pay our respects to the Elders both past and present and extend that respect to all Aboriginal and Torres Strait Islander peoples today.

