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Beyond test and measurement and software, the exhibition floor always offers impressive systems and subsystems that serve military as well as commercial needs. API Technologies, for example, is highlighting a line of standard switched-filter banks. Offering customer-defined passband frequencies from 20 to 7500 MHz with ultimate rejection to 20 GHz, these switched-filter banks also boast rugged construction. This feature makes them well suited to military and high-end commercial applications that require superior signal integrity, such as electronic warfare (EW) and electronic intelligence (ELINT).

These devices use mechanically channelized, PIN-diode switch manifolds for lower insertion loss and high isolation while lumped-element filters help to increase rejection. They also feature integrated switch drivers with typical switching speeds of 200 ns. Melissa Fisher, API’s director, Marketing and Communications, shares, “API Technologies is pleased to showcase our new line of 2-to-7-channel, switched-filter banks at IMS. We pride ourselves on providing our customers with the high level of performance that is required in the configurations that they want.”

Meanwhile, Cobham will be showcasing a dual-polar UHF sector antenna for use in the white-space frequency bands. These first-generation products will be available in 2-, 3-, and 5-GHz bands. The wideband SA11-90-0.6VH/2178 antenna provides both vertical and horizontal polarizations. In conjunction with radios and with two-port diversity, it can provide non-line-of-sight (NLOS) connectivity and reliable communications in challenging environmental conditions.

The SA11-90-0.6VH/2178 antenna covers 470 to 700 MHz. Notably, the antenna can be used in situations where a number of channels are spaced widely apart. Having peak gain of 11 dBi, a 90-deg. beamwidth, the SA11-90-0.6VH/2178 antenna can be used alone to provide sector coverage. Four units are required to achieve 360-deg. coverage. With appropriate power dividers and phase-matched cables, several antennas also could be stacked vertically—producing a narrower-elevation beam width and increased gain. Cobham has integrated both sets of the polarized elements within the same vertical aperture, producing a lightweight, rugged antenna measuring 1550 × 550 × 232 mm and and weighing approximately 20 kg including the mounting kit.

Microwave Week Makes A Splash In Tampa Bay, Fig. 6

At the Empower RF booth, attendees can see live demonstrations of the firm’s 1-kW and 500-W high-power amplifiers. The new PAs come in reduced chassis sizes: 5U for the 1-kW unit and 3U for the 500-W unit. For its latest PA systems, the firm also is offering software for the real-time reporting of PA diagnostics as well as remote monitoring/control. Because the latest PA modules are packaged as building blocks, they can be combined to scale for different applications.

The most recent debut from JFW is an RF low-passive-intermodulation (low-PIM) attenuator. The 50FLP-XXX-100 fixed attenuator boasts a maximum PIM reading of -155 dBc (-165 dBc typical). It covers 698 to 2700 MHz and is available in values of 5, 6, 10, 20, and 30 dB. The 50FLP series handles average RF power to 100 W while maintaining accuracy of ±0.75 dB and a typical voltage standing wave ratio (VSWR) of 1.3:1. According to the firm, it expects this attenuator line to impact the LTE/DAS and cellular test markets, where there has been a lack of competition for several years.

At the Lake Shore Cryotronics booth, the company will be showing a 7-in. magnet version of its AC/DC Hall measurement system as well as an integrated system for terahertz materials characterization. The Model 8407 Hall effect measurement system features a 7-in. magnet for measuring mobilities at the low end of the DC-field measurement range (from 1 to 106 cm2/V s). With the AC-field measurement added, the system is capable of measuring materials with extremely low mobilities (down to 10-3/V s). Examples include photovoltaic (solar cell), thermoelectric, and organic electronic materials, which have electronic properties that can be difficult to measure with DC-field Hall methods.

The firm’s 8500 Series terahertz system is a fully integrated hardware/software platform for the characterization of electronic, magnetic, and chemical materials. The system uses non-contact, terahertz-frequency energy and an integrated low-temperature, high-field cryostat to measure material spectroscopic responses across a wide range of frequencies, temperatures, and field strengths. The system performs continuous-wave spectroscopic response measurements to derive key material properties, such as dielectric constant, dynamic conductivity, carrier scattering times and mobilities, vibrational resonances, and magnetic resonances.


Microwave Week Makes A Splash In Tampa Bay, Fig. 7

Marki Microwave will display a host of mixers and other RF/microwave parts including the 300-kHz-to-36-GHz isolation balun. That balun provides conversions between balanced and unbalanced signals—primarily for device and system testing. It flaunts ±0.5 dB amplitude and ±3-deg. phase balance across the entire operating band. In addition, the two output ports are isolated from each other, making it insensitive to balanced-port termination and crosstalk between balanced ports. This new device nearly doubles the frequency range of available instrumentation baluns without increasing the low-end cutoff, which is so important for baseband data. In other words, it can operate with up to 40 Gb/s data streams. Additionally, its isolation makes it usable to extend a two port VNA to differential testing capabilities without additional attenuation.

At the TMD booth, a full set of power modules, amplifiers, power supplies, and fast-warm traveling wave tubs (TWTs) will be on display. The new solid-state microwave power module, PTS6900, covers 2 to 6 GHz while putting out 150 W. Leveraging the latest 0.25-µm GaN MMIC technology and low-loss power combiners, it is optimized for EW/ECM systems.

Vectron International will be spotlighting a microelectromechanical-systems (MEMS) product, which incorporates a single-crystal silicon resonator that is Epi-sealed in a vacuum. The resonator is 1/3000th the mass of a comparable quartz resonator. Due to its size, it boasts high shock tolerance and low aging, making the device well suited for military munitions and harsh environmental applications. Vectron’s HT-MM900A Military Temperature MEMS oscillator can operate as a reference clock for demanding applications while withstanding shock of 30,000g, providing vibration resistance of 70g, and offering g-sensitivity of 0.1 ppb/g.

In addition, this MEMS oscillator can scale to smaller footprints and function with different supply voltages while operating from  -55° to 125°C with a low-g-sensitivity, 5-×-7-mm temperature-compensated crystal oscillator (TCXO). The TX-707 TCXO boasts g-sensitivity beyond 0.2 ppb/g standard with a 0.1-ppb/g option. It maintains ±1 ppm stability from -40° to +85°C.

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