Data Sheet

UG-866 EV-RADAR-MMIC2 User Guide
Rev. B | Page 10 of 28
ADF4159 Ramps and Shift Keying
In the Ramps and Shift Keying tab, configure the ramping
functionality of the ADF4159.
Select the ramp type in the Ramp mode drop down menu; the
various ramp parameters can be set in the CLK1 spin box and
in the Up Ramp pane.
Example of Ramp Setup
Figure 6 shows the ramping settings for a continuous triangular
ramp of 1000 up ramp steps over 200 MHz at the ADF5901 Tx
output with a ramp time of 5 ms.
For 200 MHz, the PLL is programmed for a 100 MHz ramp
because the evaluation board uses the ADF5901 auxiliary output
with a 12 GHz output signal. After each parameter is set in the
software, each register must be written to the device.
The other options in this tab allow configuration of the various
ramps and shift keying controls of the ADF4159.
13410-006
Figure 6. Ramp and Shift Keying Tab
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