3dB 1W RF Fixed Attenuator SMA M/F 3GHz

Description

The 3dB 1W RF Fixed Attenuator is a high-performance passive component designed to reduce the power of an RF signal by exactly 3dB, effectively cutting the signal power in half. With a 1-Watt power handling capacity, it is optimized for low-power signal conditioning where high accuracy and signal integrity are critical. This model is engineered for a wide frequency spectrum from DC to 3GHz, ensuring full compatibility with VHF, UHF, GPS, and standard telecommunications bands.

The attenuator features an SMA Male to SMA Female inline configuration, utilizing a precision threaded coupling mechanism that provides high mechanical stability and excellent RF shielding in a small form factor. It is constructed with high-stability resistive elements and premium PTFE dielectric to ensure a flat frequency response and low Voltage Standing Wave Ratio (VSWR) across its entire bandwidth. Housed in a stainless steel or gold-plated brass body, it offers superior durability and corrosion resistance, making it suitable for high-density microwave assemblies and professional laboratory environments.

Key Technical Advantages

• Precise 3dB Attenuation: Delivers a reliable power reduction of exactly half, essential for balancing signal chains and fine-tuning signal strength without significant loss.

• Broad 3GHz Bandwidth: Provides a versatile solution for a wide range of wireless applications, maintaining performance from DC through the 3GHz range.

• Excellent Impedance Matching: Frequently used as an impedance “pad” to improve the VSWR between mismatched components, reducing signal reflections and protecting upstream sources.

• Ultra-Compact Design: The SMA interface and streamlined body allow for high-density integration in tight spaces and portable test setups.

• High-Reliability SMA Interface: Features precision-machined threads designed for a secure, low-loss connection and long-term durability over hundreds of mating cycles.

Key Features

• Interface Type: SMA Male (Plug) to SMA Female (Jack).

• Attenuation Value: 3dB (Fixed).

• Power Rating: 1 Watt (Continuous).

• Frequency Range: DC – 3.0 GHz.

• Impedance: 50 Ohm (Standard).

• Construction: Stainless Steel or Passivated Brass with PTFE dielectric.

• Common Application: Signal leveling in wireless systems, laboratory measurements, inter-stage isolation in microwave circuits, and protection of sensitive test ports.

Technical Summary