The Model 50 Picoprobe sets new standards in microwave probing performance.
Benefiting from coaxial techniques, which have inherent low loss and low dispersion characteristics, the Model 50 Picoprobe, with or without the bias T option, achieves an insertion loss of less than 0.8 db (typical) and a return loss of greater than 15 db (max.) over its frequency range.
With its individually spring loaded, Beryllium-Copper tips, the Model 50 Picoprobe provides reliable contacts, even when probing non-planar structures.
This reliable low resistance contact is one of the keys to providing highly repeatable measurements (-55 db) at V band frequencies. The Model 50 Picoprobe also provides direct viewing of the probe tips for accurate positioning.
The Model 50 Picoprobe bias T provides a direct low resistance DC path for supplying up to 1.5 A to a device under test. The bias T also has special circuits which add loss at frequencies below the cut off frequency (26.34 GHz) of WR-22 waveguide. This data was taken by launching a, 40 MHz to 50 GHz, signal from the tips of a calibrated Model 67A into the tips of a Model 50-GSG-150-BT. Without this low frequency loss, most active devices will oscillate.