The residual phase noise of a PHEMT device is studied in two unusual configurations: in transmission mode with a low input microwave power on the device, and in reflection mode. Measurements clearly reveal some fundamental aspects of the phase noise generation in this device: the phase noise is a modulation mechanism which still exists in the linear regime and in which the gate reactance fluctuations play an important role
Published in:
Electronics Letters
(Volume:37
,
Issue:
2
)
Date of Publication: 18 Jan 2001