Patent ID: 8278944

Claim:
A frequency-extension module that is electrically connectable with a vector network analyzer (VNA) including a signal source and a reflectometer receiver that operates in a primary frequency range for measuring a frequency response of a device under test (DUT), the frequency-extension module comprising: a distal port electrically connectable with the VNA; a proximal port electrically connectable with the DUT; an extension signal path electrically connecting the distal port and the proximal port; and at least one extension reflectometer receiver that when activated taps onto the extension signal path within an extension frequency range wider than and substantially overlapping the primary frequency range; and wherein when the proximal port is electrically connected with the DUT and the distal port is electrically connected with the VNA, the reflectometer receiver of the VNA is deactivated so that the frequency response of the DUT is measureable in the extension frequency range using the at least one extension reflectometer receiver of the frequency-extension module and the signal source of the VNA.