- Buyers Guide
Rubidium Frequency Source
The Rhino series portable rubidium-based frequency source is designed for both field andlaboratory utilization. Outputs for CDMA equipment include 19.6608 MHz, 1 PPS, phase-adjustable 1 PPS and 1/2 PPS synchronized to UTC. The frequency source includes eight buffered 10 MHz outputs with rubidium standard stability. The unit is equipped with a built-in GPS receiver, which enables the locking of the internal rubidium standard to UTC in locations where electric power is not available. The high stability rubidium standard supports synchronization of the equipment to IS-95 base stations in locations where GPS reception may not be available.
Berkeley Varitronics Systems Inc.,
13 GHz Oscillator
The model ESC 206-121 13 GHz dielectric resonator oscillator features a phase noise of -90 dBc/Hz (typ) at an offset of 10 kHz. Output power is 10 dBm (min) and mechanical tuning features a self-locking tuning mechanism. Pulling into a 1.5 SWR is less than 0.01 percent and harmonics are -20 dBc. The oscillator is housed in a low profile flanged package. Size: 0.6" x 1.6" x 1.7" (including the flange, but not connectors).
Electronic Surveillance Components Inc. (ESC),
Subminiature Ceramic Oscillators
The EC2500 and EC2600 series subminiature ceramic oscillators offer an increased frequency range that extends from 1.544 to 125 MHz and tighter frequency stability as low as +/-20 ppm. The EC2500 is a 5 V version while the EC2600 offers 3.3 V for lower voltage applications. Device performance options include +/-20, +/-25, +/-50 or +/-100 stability, extended temperature range and tight duty cycle. The units are housed in a compact 7.5 x 5.0 x 1.6 mm SMD package. Tape-and-reel packaging in 1000-piece increments is standard. Delivery: stock to 10 weeks.
Costa Mesa, CA
(800) 325-4785 or (714) 433-1200.
Low Silhouette Rubidium Frequency Standard
The FE-5680A series rubidium frequency standard features a low silhouette of less than 1", stability over temperature to 5 x 10-11, fast warm up of less than five minutes, stability to 5 x 10-12/÷t_ and to 2 x 10-10/year. The unit is available at any frequency from 1 Hz to 20 MHz.
FEI Communications Inc.,
Mitchel Field, NY
The model 6762 permanent-magnet, YIG-tuned oscillator is available at idle frequencies from 2 to 10 GHz. The oscillator is supplied with an FM coil for phase locking that tunes at a rate of 1 MHz/mA and has a 300 kHz modulation bandwidth. The coil also can handle 100 mA of tuning current allowing a +/-100 MHz tuning range. No main coil-tuning current is required. A stable (over time) permanent magnet is utilized to tune the oscillator to its idle (park) frequency. Additional features include a low phase noise of -95 dBc at 10 kHz and -125 dBc at 100 kHz and output power of 0 to +5 dBm with no buffer amp. Price: $99 for the board-mount version (10,000).
Stellex Microwave Systems,
Palo Alto, CA
These solid-state yttrium iron garnet (YIG) oscillators are designed for flat power output over multi-octave ranges, covering Mil-spec environments and commercial applications. Internal amplifier stages provide high output power for test instrument or system LO applications. The hermetically sealed units utilize the proprietary temperature-compensation techniques designed for use in the company's Ferretec series high performance YIG filter products.
Filtronic Solid State,
Santa Clara, CA
Ultra-miniature Surface-mount Oscillators
The M3L/M5L series surface-mount oscillators operate over the frequency range of 2.5 to 35 MHz and are available in either 3 V (M3L) or 5 V (M5L) versions. The oscillators are HCMOS compatible and feature tristate output. Stability of +/-35 ppm over 0° to +70°C is available. The units are compatible with conventional solder-reflow processes. Size: 3.2 x 5.0 x 1.0 mm.
M-tron Industries Inc.,
740 - 780 MHz Low Phase Noise VCO
The model PV-740C low phase noise VCO is designed for wireless applications and operates over the frequency range of 740 to 780 MHz with a low phase noise of -112 dBc/Hz at 10 kHz and -132 dBc/Hz at 100 kHz offset from the center frequency. The device features a 5 V supply voltage and a power output of 6 dBm. Operating temperature is from -40° to +85°C. Size: 0.500" x 0.500" x 0.205".
Princeton Electronic Systems Inc. (PES),
2500 - 2600 MHz VCO
The model V806ME03 VCO generates frequencies between 2500 to 2600 MHz within a control voltage range of 1 to 10 V DC. The unit exhibits spectral purity of -94 dBc/Hz (typ) at 10 kHz from the carrier and is designed for any rugged environment with operation over the extended commercial temperature range of -40° to +85°C. The oscillator operates off a 5 V DC supply while drawing only 20 mA (typ) and provides the end user 5.75 +/- 3.25 dBm of output power into a 50 W load. The unit pulls less than 20 MHz with a 14 dB return loss, any phase, and pushes less than 10 MHz/V within five percent change in the supply voltage. Price: $15.95 each.
San Diego, CA
20 W High Power Transmitters
The models HPT0021820 and HPT0020900 high power transmitters are capable of generating a CW test signal over the 1800 to 1900 MHz and 890 to 915 MHz frequency ranges for GSM 1800 and 900 applications, respectively. The portable, weatherproof units feature a large light-emitting diode display, user-friendly keypad with clearly labeled buttons, standard RF and power connectors, and automatic power amplification protection. Additional specifications include an output power of +43 dBm, gain adjustment of +/-0.5 dB, output SWR of less than 1.3 and 220 V AC power supply.
Leetec Communications Ltd.,
Stoke-on-Trent, Staffordshire, UK
+44 (0)1782 262002.
Master Clock Oscillators
The M103 series master clock oscillators are designed specifically to provide a high performance, low cost clock source for 3.3 V systems used in high end computer, server, telecom and instrumentation applications. The units feature low 3 ps (RMS) phase jitter, an output frequency of 100 to 800 MHz, 3.3 V supply operation, 30 ppm stability, differential PECL outputs, and rise and fall times of 400 ps. Price: less than $30 per unit in original equipment manufacturer quantities.
Micro Networks Corp.,
Commercial Wideband VCO
The model VCO190-1925T wideband VCO generates frequencies from 1650 to 2200 MHz with control voltages from 0.5 to 8 V. The unit typi-cally requires 11 mA of current from a 5 V supply voltage with a phase noise at 10 kHz offset of -90 dBc/Hz (typ), output power of 0 dBm (typ), second-harmonic suppression of -15 dBc (typ) and third-harmonic suppression of -18 dBc (typ). Size: 0.50" x 0.50" x 0.18".
Vari-L Co. Inc.,