Patent ID: 9557358
Date: 2017-01-31
CPC Classifications: G01R,G06K,H04B

Claim:
1. A test and measurement instrument, comprising: an RF input terminal; an attenuator coupled to the RF input terminal and structured to receive one or more input signals under test; a low band filtered path, a mid band filtered path, and a high band filtered path, each of the filtered paths capable of being coupled to the attenuator; a switch coupled to the attenuator and structured to divert the one or more input signals to at least one of the low band filtered path, the mid band filtered path, and the high band filtered path, to produce a low frequency band, a mid frequency band, and a high frequency band, respectively; and a digital down converter including a digital mixer and a down sampler configured to decimate the low frequency band, the mid frequency band, and the high frequency band, wherein the digital down converter is configured to operate based on a full frequency span of a final frequency spectrum; wherein the low frequency band, the mid frequency band, and the high frequency band are of non-uniform overlapping frequency ranges.