| 摘要 |
The arrangement includes a signal generator for producing an input signal with different frequency portions, and at least one Surface Acoustic Wave filter with an input- and an output converter. The output- or input converter is provided with a frequency-dependent group propagation time. A reference converter produces a reference signal with a constant group propagation time at a reference output which is fed back to the signal generator for a synchronization. A first output converter is preferably provided with a linearly changing group propagation time, and a second output converter which is connected with the reference output, is provided with constant group propagation time. The two output converters are preferably arranged in two, side by side lying, parallel acoustic tracks, whereby different reference signals are selectively output.
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