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Synthesizer Serves 6.1-GHz FMCW Radar

Jan. 7, 2010

Model ADF4158 from Analog Devices is a 6.1-GHz fractional-N frequency synthesizer with modulation and waveform generation capability ideal for use in frequency-modulated, continuous-wave (FMCW) radar systems. It consists of a low-noise digital phase frequency detector (PFD), a precision charge pump, and a programmable reference divider. It also includes a sigma-delta-based fractional interpolator to allow programmable fractional-N division. The synthesizer can execute frequency-shift-keying (FSK) and phase-shift-keying (PSK) modulation. It employs a simple three-wire interface to control on-chip registers and can operate from +2.7 to +3.3 V supplies. The synthesizer is supplied in a 4 x 4 mm LFCSP package and prices at $4.88 each per 1000 quantity.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.