Signal Source Fixes On 4 GHz

Nov. 21, 2012
A phase-locked frequency synthesizer provides stable 4-GHz signals for satcom applications when working with a 10-MHz reference source.

Model SFS4000C-LF is a RoHS-compliant frequency synthesizer for satellite-communications (satcom) and test applications. The fixed-frequency unit is phase locked at 4 GHz using a 10-MHz reference oscillator. The coaxial synthesizer delivers 0-dBm output power and exhibits phase noise of typically -102 dBc/Hz offset 10 kHz from the carrier with typical spurious content of -65 dBc. Second-harmonic levels are typically -15 dBc. The frequency source, which is supplied in a PLL-V12C package measuring 0.60 in. x 0.60 in. x 0.22 in., consists of a voltage-controlled oscillator (VCO) with power consumption of 30 mA at +5 VDC, as well as a phase-lock-loop (PLL) chip with power consumption of 11 mA at +3.3 VDC. It is designed for operating temperatures from -25 to +90°C.

Z-Communications, Inc., 14118 Stowe Dr., Ste. B,Poway, CA 92064; (858) 621-2700, (877) 808-1226, FAX: (858) 486-1927, e-mail: [email protected],

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.

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