OSU has acquired in Spring 2004 under an AFOSR equipment grant,
a large signal network analyzer (LSNA)
for the vectorial characterization of the non-linear response of
RF systems to periodic signals. The LSNA has the unique ability of
measuring both the phase and amplitude of periodic RF signals of
the fundamental and harmonics up to 50 GHz
(our setup is presently being upgraded to work up 40 GHz).
The RF signals can be modulated or pulsed.
Up to 10,000 RF tones
can be acquired allowing for UWB measurements of periodic signals.
This LSNA equipment which is the first one available in a US university,
offers unique opportunities for
the system identification of non-linear RF systems
and the experimental verification of non-linear RF models.
Current applications
being pursued at OSU include
(1) the characterization of traps in GaN HEMTs and materials,
(2) the development of
accurate device and behavioral models
of transistors and power-amplifiers,
(3) the interactive design of
power amplifiers & oscillators using the real-time active loadpul concept
and (4) the linearization of broadband RF power amplifiers.
The LSNA acquired has also been specially configured
to allow for the characterization of pulsed-RF and UWB systems.
NEW measurement & modeling services:
Click on "Measurement & Modeling Services"
