Voltage Controlled RF Attenuator Module 10MHz–4GHz –25dB

Voltage Controlled RF Attenuator Module — Precision Signal Control from 10MHz to 4GHz

Take precise control of your RF signal strength with this voltage-controlled RF attenuator module. Covering a wide frequency range of 10MHz to 4GHz, this PCB-based module delivers accurate, repeatable attenuation for demanding applications including 5G development, radar systems, satellite communications, and general RF lab work. With a smooth –3dB step accuracy and an effective adjustment range up to –25dB (extendable to approximately –40dB where flatness is less critical), it gives engineers and hobbyists alike the fine-tuned control they need.

Made in Mainland China.

Key Features

• Wide Frequency Coverage: Operates from 10MHz to 4GHz — ideal for 5G, radar, satellite, and wideband RF systems.
• Precise Attenuation: –3dB step accuracy with a total adjustment range of –25dB (up to –40dB with relaxed flatness requirements).
• Voltage Control: Control voltage range of 1–17V (max 20V); intuitive analog control for seamless integration.
• Flexible Power Supply: Compatible with +3V or +5V single supply at just 5mA — low power consumption for portable and embedded designs.
• High-Power Signal Handling: Accepts up to 20dBm RF input power with distortion-free performance, maintaining system linearity.
• Low SWR: Minimizes signal reflections for clean, efficient signal transmission.
• Standard SMA Interface: SMA female connectors for easy integration into existing RF setups.
• Compact PCB Form Factor: Lightweight and easy to mount in enclosures, test benches, or custom RF assemblies.

Specifications

Package Contents

• 1× Voltage Controlled RF Attenuator Module

Note: Only the item listed above is included. Colors may vary slightly due to lighting and display differences. Measurement tolerance: ±1–3cm.

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Frequently Asked Questions

Q: What frequency range does this RF attenuator module support?

A: This voltage controlled RF attenuator module covers a frequency range of 10MHz to 4GHz, making it suitable for a broad range of RF applications including 5G development, radar testing, satellite communication systems, and general wideband RF work.

Q: How is the attenuation level controlled on this module?

A: Attenuation is adjusted by varying the control voltage, which operates between 1V and 17V (with an absolute maximum of 20V). As the control voltage changes, the module smoothly adjusts signal attenuation in –3dB steps across the adjustment range of –25dB to –3dB, or up to approximately –40dB where signal flatness is less critical.

Q: What power supply does this RF attenuator module require?

A: The module supports a wide power supply input of +3V to +5V (single supply), drawing only 5mA of current. The supply voltage must not exceed 12V. This low-power design makes it ideal for battery-powered, portable, or embedded RF system designs.

Q: What connector type is used on this attenuator module?

A: The module uses standard SMA female connectors, which are compatible with most RF test equipment, coaxial cables, and development platforms, making integration into existing setups straightforward.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.