AD9958

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APPLICATION CIRCUITS

CH 0

CH 1

AD9958

REF CLK

PULSE

FILTER

FILTER

ANTENNA

RADIATING

ELEMENTS

FILTER

FILTER

LO

Figure 24. 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

REF CLK

CH 1

CH 0

AD8349

AD8348

AD8347

AD8346

ADL5390

PHASE

SPLITTER

LO

Figure 25. Single-Sideband-Suppressed Carrier-Up Conversion

LOOP

FILTER

PHASE

COMPARATOR

VCO

LPF

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REF CLK

REFERENCE

CHARGE

PUMP

AD9510, AD9511, ADF4106

÷

÷

Figure 26. DDS in PLL Locking to Reference Offering Distribution with Fine Frequency and Delay Adjust Tuning