Representatives from Rogers Corp. will be present at Booth No. 1459 to discuss their materials for printed circuit boards (PCBs) for high-frequency analog and high-speed digital applications. Among their many circuit materials, Rogers’ exhibitors will offer advice on their next-generation RO4000 materials, including their RO4835™ high-frequency laminates with oxidation resistance. RO4835 laminates offer a dielectric constant of 3.48 at 10 GHz; a low loss tangent of 0.0037 at 10 GHz; and a low z-axis coefficient of thermal expansion (CTE) for excellent plated-through-hole (PTH) reliability, under a variety of processing and operating conditions.

In addition to the many lines of RF/microwave filters for which they are known, representatives from K&L Microwave will have examples of their high-frequency switches at Booth No. 705. For systems requiring broadband signal control, model SPST-1/18-O is a single-pole, single-throw (SPST) switch with 3-dB maximum insertion loss and 2.0:1 maximum VSWR from 1 to 18 GHz. The switch, which is controlled by transistor-transistor-logic (TTL) signals, draws only 50 mA from a +5, -0.5 VDC supply. It provides at least 65-dB isolation with 100-ns or better switching speed. The coaxial switch can handle power levels to 0.5 W (+27 dBm).

Visitors to Mini-Circuits (Booth No. 2311) will see many examples of its component lines, including its RUDAT-6000 lines of surface-mount fixed attenuators (see p. 134). The attenuators, which can be programmed by Universal serial Bus (USB) or RS-232 interface, are available with maximum attenuation values of 30, 60, and 90 dB in 0.5-dB steps for applications from DC to 6 GHz. In addition, the company will show some of its “higher-level” products, such as its programmable signal generators. Model SSG-6000 is one of these compact signal generators, supplied with a +12-V AC/DC adapter and graphical-user-interface (GUI) control software. It can generate output signals from 25 to 6000 MHz at output power levels from -60 to +10 dBm.

Crystek will be on hand at IMS 2013 (Booth No. 1016) with its new model CVCO55CXT-4812-4812 coaxial resonator oscillator (CRO) for applications in satellite-communications (satcom) receivers and digital radios (Fig. 3).  As the model number might indicate, it operates at 4812 MHz with tuning voltages of +0.3 to +4.7 VDC. It delivers +3 dBm typical output power with typical phase noise of -102 dBc/Hz offset 10 kHz from the carrier. Pushing and pulling are both minimized to 1.5 MHz/V and 0.5 MHz, respectively. Second harmonic suppression is typically -30 dBc. The CRO may require a closer look at the booth, since it measures just 0.5 x 0.5 in.

3. The model CVCO55CXT-4812-4812 coaxial resonator oscillator (CRO) is suitable for use in satcom receivers and digital radios. (Photo courtesy of Crystek.)

Micro Lambda Wireless, at Booth No. 941, will show its various free-running and frequency-synthesized signal sources based on YIG oscillator technology, including its MLSP Series wideband frequency synthesizers. Available with frequency coverage as wide as 2 to 20 GHz, with 1-kHz tuning resolution, these rugged frequency synthesizers can be controlled by a USB connection to a personal computer (PC). Model MLSP-2020 tunes from 2 to 20 MHz with tuning speed of 1 ms for a 100-MHz step. It exhibits harmonic levels of typically -12 dBc and spurious levels of typically -60 dBc, with typical phase noise of -93 dBc/Hz offset 10 kHz from 2 to 8 GHz, -85 dBc/Hz offset 10 kHz from 8 to 16 GHz, and -72 dBc/Hz offset 10 kHz from 16 to 20 GHz. The synthesizer includes an internal 100-MHz reference with ±1 PPM stability.

Z-Communications (Booth No. 816) will be unveiling its model SFS0924C-LF surface-mount frequency synthesizer (Fig. 4) at IMS 2013. The compact source is suitable for mobile radios and cellular base stations, the synthesizer fires at 924 MHz with phase noise of only -118 dBc/Hz offset 10 kHz from the carrier. Second harmonics are held to typically -15 dBc while spurious content is controlled to typically -70 dBc. The typical output power is 0 dBm into a 50-Ω load. The fixed-frequency synthesizer is designed for use with a 10-MHz reference source and with +3, +5 VDC typically voltage supplies at typically 14 and 25 mA, respectively. The source is supplied in a compact surface-mount package measuring 0.60 x 0.60 x 0.22 in.

4. Model SFS0924C-LF is a surface-mount frequency synthesizer with low phase noise at 924 MHz. (Photo courtesy of Z-Communications.)

For visitors seeking advanced source technology, representatives from Synergy Microwave Corp. (Booths No. 404-405) will present examples of the firm’s reconfigurable concurrent oscillator (RCO) source technology for multiband wireless applications, as featured in this month’s Cover Feature (see p. 122). For applications such as cellular telephones with wireless-local-area-network (WLAN) circuits, these unique RCOs operate like separate tunable oscillators within a single package.

Representatives from RF Techniques (RFT) will be on hand at Booth No. 130 to share the benefits of the company’s high-power resistor products, especially for use in the design of high-power RF/microwave power amplifiers and power combiners/dividers. The firm offers a wide range of package styles and resistor values (Fig. 5) based on aluminum-nitride (AlN) and beryllium-oxide (BeO) substrate materials for DC and RF/microwave applications. Resistor products are fabricated by means of a high-temperature brazing process that forms low-thermal-resistance paths and high-power-handling capabilities, allowing for high-reliability operation at temperatures to +250°C.

5. These resistor components are designed for high power levels in power combiner/dividers and power amplifiers. (Photo courtesy of RF Techniques.)

Among its many high-power products, Response Microwave (Booth No. 128) will display its new model RMCO5.32-1200Nf coupler for radar and telecommunications applications from 20 to 1200 MHz. Measuring only 15 x 8 x 1 in. with Type-N female coaxial connectors on the mainline and coupling ports, the coupler can handle average power levels as high as 200 W across operating temperatures from -35 to +85°C. The coupler achieves minimum directivity of 20 dB while minimizing insertion loss of 0.6 dB and VSWR to 1.25:1 across its operating frequency range. It is available with other connector types upon request.

Editor's Note: For more show coverage, be sure to visit Microwaves & RF's IMS 2013 page.