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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.

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