Bias Tees - SMA Connectors

Why it Matters

Bias tees simplify RF system design by allowing DC power and RF signals to share one coaxial connection. This reduces cabling and component count while helping protect sensitive equipment and maintain reliable signal performance.

Understanding Bias Tees Performance

Unlike a filter that selects a specific portion of the RF spectrum, an SMA bias tee combines or separates DC power and RF signals while maintaining isolation between the RF and DC ports. Key performance factors include:

• Frequency Range: Defines the RF frequencies the bias tee can pass.
• RF Performance: Low insertion loss and VSWR help maintain signal quality and minimize reflections.
• DC Rating & Isolation: Ensure the voltage and current ratings meet system requirements while preventing RF energy from entering the DC port.

By allowing RF signals and DC power to share a single coaxial path, an SMA bias tee simplifies system integration while maintaining reliable electrical performance.

Typical Applications

• RF test and measurement
• Radar systems
• Electronic warfare systems
• SATCOM and communications equipment
• Aerospace and defense electronics
• RF subsystem integration
• DC bias isolation
• Protection of sensitive RF and microwave equipment

Why Choose Spectrum Control?

• Broad selection of Inner, Outer, and Inner/Outer DC Blocks
• Frequency coverage through 50 GHz
• Multiple DC voltage ratings
• SMA, 2.9 mm, 2.4 mm, and other coaxial interfaces
• Low-loss RF and microwave designs
• Compact, passive 50-ohm solutions
• Multiple connector and mechanical configurations
• Detailed electrical and mechanical specifications