AD9958

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APPLICATION CIRCUITS

CH0

CH1

AD9958

REFCLK

PULSE

FILTER

FILTER

ANTENNA

RADIATING

ELEMENTS

FILTER

FILTER

LO

Figure 22. Phase Array Radar Using Precision Frequency/Phase Control from DDS in FMCW or Pulsed Radar Applications;

DDS Provides Either Continuous Wave or Frequency Sweep

AD9958

I BASEBAND

Q BASEBAND

RF OUTPUT

REFCLK

CH1

CH0

AD8349

AD8348

AD8347

AD8346

ADL5390

PHASE

SPLITTER

LO

Figure 23. Single-Sideband-Suppressed Carrier Upconversion

LOOP

FILTER

PHASE

COMPARATOR

VCO

LPF

AD9958

REFCLK

REFERENCE

CHARGE

PUMP

AD9510, AD9511, ADF4106

÷

÷

Figure 24. DDS in PLL Locking to Reference Offering Distribution with Fine Frequency and Delay Adjust Tuning