(FRA frequency range extension)
Block diagram for transceiver mode
Extension of the frequency range up to 500 MHz for FRA and antenna analyzer modes
The device in the FRA and AA modes can operate on the harmonics of the generator signal (software version 3.12 or higher). To obtain a high level of harmonics in the spectrum, you can use a rectangular pulse shaper made on a digital logic element of the LVC family. The fast slew rate of the ICs provides a high level of odd harmonics in the output signal even at high frequencies.
High impedance FET probe
High-speed (500 MHz) FET operational amplifier OPA653 is used. Attenuation ratio – 1x (one-to-one), input capacitance is about 4 pF.