Oscillators Aim At Low Phase Noise

July 25, 2013
A line of dielectric-resonator oscillators delivers high frequencies with low phase noise and excellent tuning sensitivity through 14 GHz.

The DRO series of high-performance oscillators is based on high-Q dielectric resonators and has been developed for demanding applications at high frequencies. Currently available at frequencies from 8 to 14 GHz, these signal sources are ideal for frequency upconversion and frequency downconversion where low phase noise is critical. For a DRO operating at 10 GHz, the electrical tuning option offers a control range of 0 to 12 VDC, enabling fine-precision tuning over a range of ±3 MHz. The tuning sensitivity is approximately 1 MHz/V. The phase noise of these sources is as good as typically -110 dBc/Hz offset 10 kHz from the carrier. Second-harmonic attenuation is better than -25 dBc. The DRO oscillators deliver 0 ± 3 dBm output power into a 50-Ω load and are designed for operating temperatures from -4 to +85°C. The oscillators draw only 20 mA typical current from a +5-VDC source and are available in surface-mount packages measuring 0.91 x 0.91 x 0.40 in. For rugged applications, the DROs can be supplied are available in a metal enclosure measuring 1.25 x 1.25 x 0.85 in. P&A: $195 each; 4 to 6 wks.

Z-Communications, Inc., 14118 Stowe Dr., Ste. B, Poway, CA 92064; (858) 621-2700, FAX: (858) 486-1927.

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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