Focus Microwaves has developed a multi-purpose tuner (MPT) for WLAN, WiMAX and 3G/4G applications. The model iMPT-1818-TC uses three independent wideband probes allowing independent control of the amplitude and phase of the reflection factor at all three harmonic frequencies.

The main application of the MPT is harmonic load pull, although it can also be used as a single-probe tuner as well as a high VSWR prematching tuner. The ultra-stable (fundamental only) mode of operation is a necessity for on-wafer vibration-free testing and is accomplished by moving the probes only vertically. MPT option "TC" (twin carriage) allows wideband operation up to one Decade. The iMPT-1818-TC covers the frequency range from 3 to 18 GHz.