- Buyers Guide
Military Microwaves Supplement
Dielectric Resonator Sources
The company’s dielectric resonator sources are designed with the lowest phase noise at the lowest cost. Internal reference models are available up to ±5 ppm stability. (Phase-locked sources over 27 GHz also are available.) Special options include two outputs and a separate reference module to minimize size. The company also offers special units and surface-mount synthesizers as well as voltage-controlled oscillators.
RADITEK, San Jose, CA (408) 266-7404.
The XO2000 series crystal-controlled oscillators cover the output frequency range from 80 to 120 MHz with frequency stability of ±5 ppm. RF output power is 13 dBm (typ) with a power supply of +12 V DC at 35 mA. Phase noise at 10 Hz is -85 dBc/Hz and at 100 Hz is -122 dBc/Hz. Supply ripple sensitivity is 50 mV, -76 dBc at 400 MHz and vibration sensitivity is < 5 x 109/G. Operating temperature range is 0° to +50°C. Size: 1.00" x 1.00" x 0.50".
Techtrol Cyclonetics Inc. (TCI), Cumberland, PA (717) 774-2746.
The OX-2000 series oven-controlled crystal oscillators (OCXO) are available in frequencies from 1 to 160 MHz with a center frequency of ±0.1 ppm (from 0° to 50°C). The oscillators meet ANSI Stratum-3 requirements, including ±4.6 ppm total stability over a lifetime and ±0.37 ppm over a holdover period as well as variations in temperature, supply voltage, load variations and 24 hours of aging. The oscillators utilize a contemporary semiconductor heating design, ensuring that the units reach thermal stability and specifications within 1.5 minutes (typ) and three minutes (max). The OCXOs consume less than 2.5 W during warm-up and less than 1 W steady-state at 25°C. The OX-2000 series are available in small 14-pin DIPs with package height of less than 10 mm from 1 to 60 MHz and less than 12.7 mm for frequencies up to 160 MHz, which include SONET and asynchronous transfer mode applications. Prices: start at $50 (10,000). Delivery: 12 weeks (ARO).
Raltron Electronics Corp., Miami, FL (305) 593-6033 .
Get access to premium content and e-newsletters by registering on the web site. You can also subscribe to Microwave Journal magazine.