| 摘要 |
A test and measurement instrument including a splitter configured to split an input signal into at least two split signals, at least two harmonic mixers configured to mix an associated split signal with an associated harmonic signal to generate an associated mixed signal, at least two digitizers configured to digitize the associated mixed signal, at least two MIMO polyphase filter arrays configured to filter the associated digitized mixed signal of an associated digitizer of the at least two digitizers, at least two pairs of band separation filters configured to receive the associated digitized mixed signals from each of the MIMO polyphase filter arrays and output a low band of the input signal and a high band of the input signal based on a time different between the at least two digitizers and a phase drift of a local oscillator, and a combiner configured to combine the low band of the input signal and the high band of the input signal to form a reconstructed input signal. |
| 主权项 |
1. A test and measurement instrument, comprising:
a splitter configured to split an input signal into at least two split signals, each split signal including substantially the entire bandwidth of the input signal; at least two harmonic mixers, each harmonic mixer configured to mix an associated split signal of the at least two split signals with an associated harmonic signal to generate an associated mixed signal; at least two digitizers, each digitizer configured to digitize the associated mixed signal of an associated harmonic mixer of the at least two harmonic mixers; at least two multiple input multiple output (MIMO) polyphase filter arrays, each MIMO polyphase filter array configured to filter the associated digitized mixed signal of an associated digitizer of the at least two digitizers; at least two pairs of band separation filters configured to receive the associated digitized mixed signals from each of the multiple input multiple output polyphase filter arrays and to separate and output a low band of the input signal and a high band of the input signal based on a time difference between the at least two digitizers and a phase drift of a local oscillator; and a combiner configured to combine the low band of the input signal and the high band of the input signal to form a reconstructed input signal. |
