RF DC Blocks—Inner, Outer & Combined Configurations

RF Inner DC Blocks Up to 40 GHz

RF Inner DC Blocks from Bracke Manufacturing are designed to block DC voltage on the center conductor of a coaxial line while allowing seamless RF signal transmission. Ideal for protecting sensitive test equipment, preventing DC bias interference, and maintaining signal integrity. Available with 2.92mm, BNC, F, N-type, SMA, TNC, and 75 Ohm connectors, these blocks support frequencies up to 40 GHz, VSWR as low as 1.35:1, and voltage ratings up to 200 volts. Perfect for RF and mixed-signal test environments where DC isolation on the center conductor is essential.

RF Outer DC Blocks Up to 40 GHz

Bracke Manufacturing’s Outer DC Blocks are designed to block DC current on the outer conductor (shield path) of coaxial connectors, isolating ground loops and reducing interference in sensitive systems. Ideal for lab testing, communications, and high-frequency applications, they deliver excellent RF performance with VSWR as low as 1.35:1 and support frequencies up to 40 GHz. Available with 2.92mm, BNC, F, N-type, SMA, and TNC connectors, they ensure reliable signal integrity in advanced RF setups.

RF Inner/Outer DC Blocks Up to 26.5 GHz

Our RF Inner/Outer DC Blocks provide complete isolation by blocking DC currents on both the inner and outer conductors of a coaxial line. They help eliminate ground loops, prevent unwanted DC bias, and protect test equipment from electrical interference. Supporting frequencies up to 26.5 GHz, VSWR as low as 1.35:1, and voltage ratings up to 200 volts, these blocks are available with 2.92mm, BNC, F, N-type, SMA, TNC, and 75 Ohm connectors to suit a wide range of system configurations.

Additional Bracke Products Commonly Used with DC Blocks

Bracke offers a range of complementary products often used alongside DC blocks. These include bias tees, which enable DC power injection or extraction without disrupting the RF signal, and RF attenuators, which help regulate signal levels and protect sensitive components. Termination loads are frequently paired with DC blocks to properly terminate unused ports and minimize signal reflections. For reliable connectivity, coaxial adapters and precision RF cables ensure low-loss transitions between connector types. All Bracke components are engineered for high performance in test environments, communication systems, and other demanding RF applications.

For custom solutions, please contact our team by calling (949) 756-1600 or emailing us at sales@brackemfg.com.