BNC RF connectors are the most popular coaxial connector. The special bayonet design allows easy mating and unmating. BNC 50 ohm connectors provide repeatable electronic performance from DC to 4 GHz. BNC 75 ohm connectors are suitable for applications up to 1 GHz.
The Q Band Waveguide to Coax Adapters pictured above are the models SWC-222F-R1 and SWC-222M-R1 and cover the X to W frequency bands.

Corry Micronics releases for production filtered d-Sub connector adapters. Ceramic tubular adapters are used in applications requiring high levels of attenuation or where the interfering signals cover a wide range of frequencies...

The TWT, WFA, and SWS series of Millimeter Wave Tapered Transitions, Waveguide Flange Adapters, and Straight Waveguide Sections feature low VSWR and insertion loss, and operate in the 18 to 220 GHz frequency range. They’re ideal for applications involving test and measurement equipment, and assemblies and subsystems.

HUBER+SUHNER is a leading global provider of radio-frequency connectors for the transmission of analogue and digital signals, and has many years of experience in the engineering and production of coaxial connectors. These products are used in various applications including those in radio base stations, and in medical, space, and defense markets. HUBER+SUHNER supports and assists its customers in selecting the right product for each specific application.

Krytar has just launched a new line of coaxial adapters that cover from DC to 40 GHz, depending on the model selected. The adapters come with SMA, 2.4, and 2.92 mm connector types

SMA connectors, short for SubMiniature Version A, are semi-precision, subminiature devices that provide repeatable electrical performance from DC to 12.4 GHz with flexible cable. SMA connectors feature screw-type coupling. Semi-Rigid cabling extends the frequency range of the device to 18GHz. SMA connectors offer broadband performance with low reflections and constant 50 ohm impedance. These properties, along with minimum attenuation and low VSWR have made the SMA connector extremely popular in the microwave community. LTI SMA connectors are designed to conform to MIL-C-39012 specifications.

Corry Micronics has offered industry-standard filtered d-sub adapters for over a decade now. They’re now moving into micro d-sub adapter offerings due to customer demand, as other suppliers of similar products are adopting higher prices and offering poor lead times.