Micrometer driven variable attenuators (~0-30dB) Increased test port power (for selected bands) Power leveling and sweeping is also supported when used with our PM5 Power Meter. They are compatible with most network analyzers and can be integrated into probe stations and antenna chambers. These modules combine high test port power and exceptional dynamic range to deliver industry leading performance.

In addition to our full Transceiver (TxRx) modules, VDI also offers Transmit-Reference (TxRef) modules and Receive only (Rx) modules that deliver optimized performance for specific applications. Models cover 50 GHz to 1,100GHz with additional bands in development.

Therefore, like the multiline thru-reflect-line method, it can be used to establish a traceable vector-network- analyzer calibration, Thus, the multireflect-thru method constitutes an alternative to the multiline thru-reflect-line calibration in environments in which the use of transmission lines is troublesome, such as in the case vector-network-analyzers with very small coaxial and waveguide connectors.VDI's VNA Extenders deliver high performance network analyzer frequency extension into the THz range. Our new multireflect-thru method is solely based upon dimensional parameters of the calibration standards. We compare our method with the multiline thru-reflect-line method, and show that both methods yield similar results. The unknown propagation constant of the transmission line and the load reflection coefficient are then determined simultaneously with the vector-network- analyzer calibration coefficients.

Offset-reflect standards consist of sections of the same uniform transmission-line with different lengths, which are terminated with the same highly-reflective load. We present a new method for two-port vector-network-analyzer calibration which uses multiple offset-reflect standards and a flush thru connection.

Vector network analyzer