Keysight (Agilent) Q11644A Mechanical Calibration Kit, 33 to 50 GHz

The Keysight (Agilent) Q11644A Mechanical Calibration Kit is a precision calibration standard designed to correct systematic errors in network analyzer measurements across the 33 to 50 GHz frequency band. Built for WR-22 waveguide applications, this kit delivers the mechanical accuracy required in microwave and millimeter-wave metrology. It supports Thru-Reflect-Line (TRL) calibration methodology for coaxial measurements, enabling traceable error correction in RF and microwave test systems.

Technical Specifications

• Frequency Range: 33 GHz to 50 GHz


• Waveguide Size: WR-22


• Termination Return Loss: ≥ 42 dB effective return loss


• Short Circuit Flatness: Within 0.008 mm

Key Features

• Precision airline standard for transmission line definition


• Flush short circuit with controlled flatness for reflect calibration


• Precision shim for mechanical alignment


• Fixed termination (Q910A reference element)


• Commercial calibration certificate included


• Calibration kit definitions supplied (.xkt file format) The kit's short circuit flatness specification of 0.008 mm ensures minimal phase distortion during TRL calibration routines. High return loss terminations (≥ 42 dB) provide stable reference impedance across the full 33–50 GHz band, critical for accurate S-parameter measurements in aerospace, defense, and telecommunications applications.

Compatibility & Integration The Q11644A integrates with Keysight and Agilent network analyzer platforms including the 8510, 872x, and PNA series instruments. Calibration kit definitions are provided in standard .xkt format for direct software integration, eliminating manual coefficient entry and reducing setup time in production test environments.