Products

Low-, medium-, and high-power attenuators

A new family of radio-frequency (RF) attenuators features 25W, 50W, or 100W average power ratings at operating frequencies up to 18GHz, depending on the configuration. The 236 new part numbers include 3dB, 6dB, 10dB, 20dB, 30dB, 40dB, 50dB, and 60dB models for most connector styles. In-series connector configurations include SMA, TNC, Type-N, and 7/16 DIN, and they come in male-male, male-female, and female-female interfaces.

The 25W models are bi-directional, while the 50W and 100W version are uni-directional. These attenuators are constructed with black-anodized aluminum heat-sink bodies and are designed with large cooling fans to dissipate heat at high temperatures.

Selector available at: http://bit.ly/YXC7wR

Fairview Microwave Inc.
www.fairviewmicrowave.com

Terminal blocks with large cross-sections

The SRK range of screw-connection terminal blocks now includes models with large cross-sections. Feed-through terminals are now available for wire cross-sections between 16mm² and 120mm², covering a range of 0.08mm² to 120mm².

Up to size 35mm2, the terminals feature a double cross- connection channel for plug-in cross-connectors. Larger models use screw-in cross-connectors located on the inside. SRK terminal blocks now fit wire cross-sections from 16mm² to 70mm². Models up to 35mm² feature snap-on rail contacts. A large wire entry bay facilitates wire insertion, allowing connection of multiple wires. All SRK-type terminals have a compact housing and feature excellent stability, vibration resistance, and improved attachment of the wires to the contact point. Terminal foot construction ensures a reliable, firm hold on the mounting rail.

View a spec sheet at http://bit.ly/1rAKwmB.

Conta-Clip Inc.
www.contaclipinc.com

High-isolation RF switches

A new family of high-isolation PIN diode switches consists of three low-insertion loss, high-isolation, and high-speed modules, covering a frequency range of 1GHz to 12GHz.

When signal integrity and performance are critical components, the higher the isolation figure, the better the overall performance will be. These PIN diode switches feature port-to-port isolation of greater than 90dB at 1GHz to 2GHz, 80dB at 2GHz to 4GHz, and 75dB at 6GHz to 12GHz. Insertion loss of the high-isolation switches varies between 1.0dB and 2.5dB depending upon the frequency, and switching speed performance ranges from 35 nanoseconds to 75 nanoseconds. These RF switches are designed with complementary metal oxide semiconductor (CMOS) transistor-transistor logic (TTL) drivers, and are fully matched internally for 50Ω input and output, which eliminates the customer’s need for additional sensitive RF tuning components.

The PIN diode switches are housed in SMA-connector casings that are built to withstand temperatures from -54°C to 85°C for use in many common defense and commercial applications. These switches also meet typical military specifications for vibration, shock, temperature, and humidity.

Pasternack Enterprises Inc.
www.pasternack.com

Linear piezo nanopositioners

QNP-L series linear piezo nanopositioning stages give nanometer-level performance in a compact, high-stiffness package. A variety of travel and feedback options make these stages fit applications ranging from microscopy to optics alignment.

The stages are guided by precision flexures optimized using finite element analysis to ensure high-stiffness and long life. This design offers stiffness and resonant frequency for high process throughput and fast closed-loop response. The design also provides high geometric performance (straightness and angular errors) while minimizing overall stage package size.

QNP-L piezo stages offer closed-loop feedback using a capacitive sensor design that yields sub-nanometer positioning resolution and high-positioning accuracy (linearity). The capacitive sensors directly measure the output of the positioning carriage, enabling linearity and positioning repeatability when compared to indirect feedback metrology techniques such as strain-gage feedback.

When coupled with Q-series controllers and drives, QNP-L stages retain sub-nanometer positioning resolution and in-position stability (jitter), and high-positioning bandwidth. Aerotech’s Dynamic Controls Toolbox and Motion Designer software packages provide advanced tools such as learning control, harmonic cancellation, and command shaping, providing improved tracking errors and faster step-and-settle times.

Automatic parameter and calibration identification is accomplished with Aerotech’s FlashConfig feature. The stage is automatically identified and all operational parameters, including axis calibration data, are uploaded into the controller ensuring safe, accurate, and true plug-and-play operation.

QNP-L piezo stages are available with capacitive sensor feedback or without feedback (open-loop). An optional mounting plate provides direct mounting to English or metric breadboard optical tables. Common travels of the X-, X-Y-, and Z-stages mount together without adapter plates. All QNP piezo stages are available in vacuum-prepared versions upon request.

The QNP-L series data sheet is available at http://bit.ly/VNYdQp.

Aerotech Inc.
www.aerotech.com