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K-MC1 Datasheet(Folha de dados) 7 Page - RFbeam Microwave GmbH

Nome de Peças. K-MC1
descrição  RADAR TRANSCEIVER
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Fbricantes  RFBEAM [RFbeam Microwave GmbH]
Página de início  https://www.rfbeam.ch/
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K-MC1 RADAR TRANSCEIVER
Datasheet
Sampling sequence
To simplify signal processing sequence, output sampling may be done immediately after /ENABLE
goes high (1) or before next /ENABLE (2).
Both methods have their advantages and disadvantages:
-
Sampling point (1) contains a constant overshoot, i.e. sampled output signal becomes shifted by
a constant DC component. There is no loss of sensitivity.
-
Sampling point (2) corresponds to the real mixer output, as long as sleep time is short enough. But
with longer off times, signal amplitude decreases.
As a rule of thumb: with a repeat frequency of 1kHz (duty cycle of 7µs/1ms = 0.7%) amplitude loss is
3dB approx. This situation is shown in the figure below.
Sampling signal (tc = 1ms, ton = 7us)
Output signal decreases during the off-period with
a timeconstant of 4.8ms approx.
Fig. 8: x_AC output amplitude decreases during sleep time.
© RFbeam Microwave GmbH, Schuppisstrasse 7, CH-9016 St. Gallen
Page 7/8
1µs/div




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