Adaptive method used to overcome channel to channel isolation

Details Adaptive method used to overcome channel to channel isolation Adaptive method used to overcome channel to channel isolation

2007-12-04

2007-12-04

Benson, Walter (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

C324S615000

Reexamination Certificate

active

11438000

ABSTRACT:
Selectable attenuators are used in the reference and test paths of a VNA, with attenuation automatically inserted or deleted when the Device Under Test (DUT) attenuation reaches predetermined thresholds. Attenuation in the reference channel is removed when the signal in the test channel is sufficient to overcome the leakage of the reference channel. Additionally, attenuation is removed from the test channel when the reference channel has a high attenuation inserted to further increase the difference between the leakage reference signal and the reduced test channel signal thus allowing lower isolation requirements on the two (or more) receiving channels.

REFERENCES:
patent: 6766262 (2004-07-01), Martens

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