What is in this article?:
- Wrapup Of Highlights From The 2013 IMS
- Mixers And More
The health of the RF/microwave industry was apparent from the large number of new-product introductions at the 2013 IMS exhibition.
Mixers And More
In addition to this and other broadband amplifiers, Custom MMIC displayed its model CMD178C3 general-purpose, double-balanced fundamental mixer. Designed for upconversion and downconversion from 11 to 21 GHz, the mixer provides 6-dB typical conversion loss with a wide intermediate-frequency (IF) bandwidth of DC to 6 GHz. It has low local-oscillator (LO) leakage at the RF and IF ports (-25 and -3 dBm, respectively), and can operate with LO drive levels as low as +9 dBm.
At IMS 2013, MITEQ displayed a number of different amplifiers, including its SAFSW Series of K-band waveguide amplifiers with low noise figures (Fig. 2). Developed for use in demanding airborne applications, these amplifiers can achieve noise figures of 1.25 dB at +25°C from 18 to 21 GHz. They are designed to run on supplies of either +12 to +15 VDC or as low as +5 VDC for minimum power dissipation. An integral transmit-band filter helps minimize transmit interference signals by at least 60-dB rejection at 30 GHz.
2. This K-band waveguide amplifier was designed for demanding airborne applications. (Photo courtesy of MITEQ.)
Also at IMS 2013, oscillator house Vectron International unveiled its model HT-MM900A MEMS oscillator for clock and timing requirements over military temperature ranges. Available at frequencies from 1 to 110 MHz, the MEMS oscillator maintains ±25 ppm temperature stability from -55 to +125°C and can be supplied in packages as small as 2.5 x 2.0 mm. According to Greg Smolka, Vice President for Sales, “Our customers have reacted very positively to Vectron’s commercial MEMS product release earlier this year. However, our military customers were also interested in these same features and benefits for their designs. We’re pleased to be able to extend the capability of our MEMS portfolio with this product release.” The rugged oscillators are designed to withstand shock levels to 50,000 g and vibration to 70 g’s, with low g sensitivity of 0.1 ppb/g vibration sensitivity.
The firm will also show its extended holdover crystal oscillator (EHXO) line, including its model MX-042 (Fig. 3), designed to provide rubidium-reference frequency accuracy at a crystal oscillator price. The MX-042, designed for use in cellular base stations, enables high timing accuracy even when the master timing is lost for a cellular system. The MX-042 crystal oscillators measure just 2 x 2 x 1 in., with aging rate of just 0.06 ppb/day and low phase noise for 10-MHz outputs.
3. Model MX-042 is an extended-holdover crystal oscillator (EHXO) designed to maintain timing in cellular communications systems, even when the master clock signal is lost. (Photo courtesy of Vectron International.)
For IMS visitors seeking low-cost test equipment, Vaunix Technology Corp. showed off its Lab Brick line of compact instruments powered and connected by Universal Serial Bus (USB). By connecting to the USB port of a laptop or personal computer (PC), these compact instruments can generate and process test signals at frequencies through 20 GHz. The LMS Series of signal generators, for example, includes models for 70 to 450 MHz, 600 to 3200 MHz, and 1000 to 4000 MHz. Lab Brick phase shifters provide 1-deg. phase resolution with high accuracy, and the firm’s line of digital attenuators can now handle input levels to +33 dBm (2 W) power. The Lab Brick instruments are typically less than 1 lb. in weight and can run on battery power when a USB line is not available.
Lastly, for those in need of high-frequency interconnections, San-tron offered a variety of innovative RF/microwave coaxial connectors and cable assemblies at IMS 2013. New products included the SRX™ cable assemblies for commercial applications through 6 GHz requiring low passive intermodulation (PIM) distortion, as well as for military/avionics environments through 20 GHz. The firm also showed its eSeries connectors and cable assemblies in many popular configurations, including eSMA, Type-N, 7/16, and TNC weatherproof 50-Ω connector styles.
Editor's Note: For more show coverage, be sure to visit Microwaves & RF's IMS 2013 page.