发明名称 |
Multichannel simultaneous real time spectrum analysis with offset frequency trigger |
摘要 |
An instrumentation receiver for multichannel simultaneously realtime spectrum analysis with frequency trigger offset inputs a wideband IF signal derived from a wideband RF signal by the receiver to both a wideband IF channel and a narrowband IF channel simultaneously. The wideband IF signal output from the wideband IF channel is sampled at a high sample rate with relatively low resolution to produce wideband signal data. The wideband IF signal input to the narrowband IF channel is frequency offset by a variable amount according to a region in the wideband IF signal where a frequency trigger event is expected and then narrowband filtered to produce a narrowband IF signal. The narrowband IF signal is sampled at a relatively low sample rate with high resolution to produce high dynamic range signal data for input to a frequency trigger function.
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申请公布号 |
US7352827(B2) |
申请公布日期 |
2008.04.01 |
申请号 |
US20040804672 |
申请日期 |
2004.03.18 |
申请人 |
TEKTRONIX, INC. |
发明人 |
EARLS JEFFREY D.;HILLMAN, JR. ALFRED K. |
分类号 |
H04L27/06;H04B1/28;H04B1/38 |
主分类号 |
H04L27/06 |
代理机构 |
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地址 |
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