Saturday, May 19, 2007

New Tetra Air Analyzer from Willtek

The TETRA Quality of Service is of major concern for network operators and user groups in the public safety and security sector. Willtek’s 8140 TETRA AirAnalyzer now helps to discover dead spots and handover problems. It monitors the radio communication and offers users comprehensive post-processing capabilities.

The TETRA AirAnalyzer enables you to test network performance and load to make safety-critical communication as reliable as possible. It records, displays and analyses the complex communication between one or several TETRA mobile stations and a TETRA base station.

The TETRA AirAnalyzer can also be used as a versatile protocol analyzer for the development of TETRA terminals, IOP tests, or monitoring and analysing signalling.


What is MEMS Technology?

Micro-Electro-Mechanical Systems (MEMS) is the integration of mechanical elements, sensors, actuators, and electronics on a common silicon substrate through microfabrication technology. While the electronics are fabricated using integrated circuit (IC) process sequences (e.g., CMOS, Bipolar, or BICMOS processes), the micromechanical components are fabricated using compatible "micromachining" processes that selectively etch away parts of the silicon wafer or add new structural layers to form the mechanical and electromechanical devices.

MEMS promises to revolutionize nearly every product category by bringing together silicon-based microelectronics with micromachining technology, making possible the realization of complete systems-on-a-chip. MEMS is an enabling technology allowing the development of smart products, augmenting the computational ability of microelectronics with the perception and control capabilities of microsensors and microactuators and expanding the space of possible designs and applications.

Microelectronic integrated circuits can be thought of as the "brains" of a system and MEMS augments this decision-making capability with "eyes" and "arms", to allow microsystems to sense and control the environment. Sensors gather information from the environment through measuring mechanical, thermal, biological, chemical, optical, and magnetic phenomena. The electronics then process the information derived from the sensors and through some decision making capability direct the actuators to respond by moving, positioning, regulating, pumping, and filtering, thereby controlling the environment for some desired outcome or purpose. Because MEMS devices are manufactured using batch fabrication techniques similar to those used for integrated circuits, unprecedented levels of functionality, reliability, and sophistication can be placed on a small silicon chip at a relatively low cost.


M150 Probe Station from Cascade

Cascade Microtech is bringing to market the M150 Measurement Platform that for the first time brings high-performance
and precision electrical measurement for any type of 150mm device on a single platform. The M150 is a revolutionary
configurable design that serves as an entry-level measurement system for research and development of a wide variety of high-speed devices. This is the first product of its kind that is completely modular and affordable while maintaining Cascade Microtech’s legendary precision measurement capability.
The M150 Measurement Platform maintains the system accuracy necessary for measurements of high-speed wafers at 150mm and below, as well as packages, boards and biological materials. Unlike standard wafer probers, the M150’s user-interchangeable parts include custom device under test (DUT) holders that can be easily changed and optimized for a wide variety of applications including:
• 150mm wafers for compound semiconductors
• Packaged chips and multi-chip modules
• Shards of large format silicon wafers
• Motherboards
MEMS devices
• Investigation of biostructures and applications including lab-on-a-chip

The M150 is not just revolutionary in its configurability. With this introduction Cascade Microtech has created an easier way to buy systems that were previously complex measurement tools requiring days to configure in order to purchase. The customer can buy two ways—buy a pre-configured application-specific system or configure his own system with an online system-builder or configurator. Further, Cascade Microtech provides system accessories designed to support each application. These include application-optimized probes, cables, precision positioners and other accessories. All the user has to do is determine their application need and select the appropriate measurement system and accessories. When the customer’s measurement needs evolve they can select a new accessory kit, and, if necessary, the appropriate
measurement system modules and they are up and running. Unlike the purchasing process of the past, the need to go through a separate purchasing, bidding and budget authorization cycle is eliminated.

M150 can be configured and reconfigured

The M150 Measurement Platform is customer configurable with interchangeable standard parts and accessories optimized for specific
measurement needs. Its unmatched versatility can save customers tens of thousands of dollars on the purchase of separate measurement stations. The M150 helps customers solve device problems such as those related to power consumption, operating frequency, signal isolation, signal integrity and channel bandwidth.

The M150 Measurement Platform is designed for customers who are:
• Working in semiconductor fabs, yield departments, failure analysis, process engineering and device modeling;
• Working on process characterization of III-V compound semiconductors such as gallium arsenide, silicon germanium, and indium phosphide for RF, microwave and millimeter wave applications;
• Working with signal integrity issues on PCBs and high-speed interconnects;
• Working with emerging technologies to accurately position, navigate and view their analysis for applications such as lab-on-a-chip, microfluidics, organic transistors, polytec neurons, MEMS devices and other biostructures; and
• University labs around the world doing R&D on semiconductor devices and processors.

Friday, May 18, 2007

Antennas for your application

European Antennas design, develop, customise and manufacture antennas to meet applications within 100MHz to 40GHz.

All antennas are tested through development to manufacture ensuring accuracy and specification conformance. Our on-site spherical near field test facility verifies radiation patterns with full support documentation available.

Our antennas are used worldwide in defence, satellite, commercial and security industries for applications including wireless LAN, WiFi, RFID, WiMAX, defence COTS, TETRA, telemetry, marine, airborne, surveillance, outside broadcast and cellular mobile telecommunications.

Antenna designs include broadband, ultra wide band, directional base stations (sectors) and flat panel antennas, omni-directional antennas and helix antennas. They are used on satellites, UAVs, UGVs, helicopters, race cars, vehicles, windows, broadcast equipment, masts and buoys, and can be integrated into systems.

Standard antenna designs (COTS) are available and we undertake development projects.
Send your specifications by email and a quotation immediately

Microwaves & RF Magazine at MTTS Show

Probe Stations

Whether you need a cost-effective manual station for probing 150mm wafers or a semiautomatic thermal station to probe 200mm or 300mm wafers, Cascade Microtech offers a complete line of high performance solutions for on-wafer probing, circuit boards and modules, MEMS, biological structures, and electro-optic devices. Probe stations are available with accessories such as thermal control systems, special cables, calibration software, and industry leading probes that help you position, calibrate, and characterize your device under test. Cascade pioneered the first 1 femtoamp measurement, and offers systems that probe up to 220 GHz with extremely low leakage and low contact resistance.

RF Microwave Amplifiers

MILMEGA is a leading specialist in the design and manufacture of solid state, high-power microwave amplifiers.

The company's core strength lies in the development of broadband Class A amplifiers, typically operating in the 1GHz to 14GHz range with output powers from 1W to 6kW. MILMEGA is based on the Isle of Wight, off the south coast of England, UK. From this location, we have built up a reputation for a flexible and dynamic approach to meeting customer requirements for solid state high-power amplifiers.

Schaffner is the international leader in electromagnetic compatibility (EMC) and power quality (PQ), focusing on high-growth sectors such as the automotive industry, building automation, industrial electronics, consumer goods, aerospace, medical technology, power supplies, telecommunications, transportation and renewable energy.

MEMS Software

MEMSCAP provides custom products (wafers, MEMS dies and wafer level packaged devices) manufacturing services from our North Carolina platform for the whole spectrum of MEMS applications, from biomedical to communications, through optical and consumer markets.

MEMSCAP's Standard Products Business Unit offers a wide range of multi-applications sensors for critical aerospace/defence, medical/biomedical and energy or industry related equipment, while IntuiSkin supplies dedicated innovative skin care dedicated systems and products for a wide variety of aplications and fields.

Octree Meshing

Octree Meshing

MicroStripes utilizes octree meshing, delivering increased accuracy with significantly reduced run-time. It permits the modelling of structures which are both larger and more detailed than would otherwise be possible. Octree meshing progressively and automatically lumps together computational cells in regions remote from geometric detail. The ultimate size of the lumped cells is limited only by the local permittivity, permeability and highest frequency of interest. Critical but electrically small detail can be captured with an exceedingly high resolution mesh, while the octree meshing reduces the total cell-count by an order of magnitude.

Automated Mesh Generation

MicroStripes ensures that the mesh is suitably fine for the frequency band of interest. The mesh is automatically snapped to geometry and refined on curved surfaces and in dielectric regions. The user can "tweak" the mesh in localized regions, or demand a finer mesh in the vicinity of specified objects. The TLM solver allows rapid change in cell dimensions.

Large Models

Octree meshing and sub-cell models mean that MicroStripes has very low memory requirements. However, for particularly large or demanding models MicroStripes 64-bit EM simulator allows memory usage to exceed 2Gbytes as well as still taking advantage of multi processors. Available for both PC and UNIX 64bit systems.

Antennas Mounted on a Hovercraft

MicroStripes has recently been used to model the complex interactions between a series of antennas mounted on a hovercraft. Thanks to MicroStripes's Octree meshing capabilities and 64bit solver, this model, which is both geometrically complex and electrically large, was efficiently and easily simulated within MicroStripes.

Commenting on this work, Larry Fry of Prologic (PA, USA) said:

I have used many software products over the years for analysis of complex electromagnetic issues that ranged from simple NEC codes to more complex special purpose programs. I think that Flomerics has hit a homerun with MicroStripes. It is easy to use, gives accurate results and the support is incredible. I would highly recommend MicroStripes to anyone that needs to solve complex 3D real world problems in a hurry.

SAR Measurement

IndexSAR specialises in turnkey test systems for the measurement of SAR (Specific Absorption Rate) and the Over The Air (OTE) testing of wireless devices.

Our product range includes E-field probes for use in both air and in tissue-simulant liquids, equipment for accurate testing of the dielectric properties of phantom liquids and a system to give a 3D presentation of mobile handset radiation and sensitivity. We can supply suitable RF amplifiers and directional couplers for wireless product testing and can offer suitable phantoms (heads, hands and liquids) for testing radiated emissions.

Transmission Line Matrix Method

Transmission Line Modelling (TLM) or Transmission Line Matrix (TLM) Modelling (depending on who you ask) is a general numerical simulation technique suitable for solving field problems. Its main application has been in electromagnetics, but it has also been applied to thermal or diffusion problems as well as acoustics.

The TLM method belongs to the general class of differential time-domain numerical modelling methods. The basic approach of the TLM method is to obtain a discrete model which is then solved exactly by numerical means; approximations are only introduced at the discretisation stage. This is to be contrasted with the traditional approach in which an idealized continuous model is first obtained and then this model is solved approximately. For electromagnetic systems, the discrete model is formed by conceptually filling space with a network of transmission-lines in such a way that the voltage and current give information on the electric and magnetic fields. The point at which the transmission-lines intersect is referred to as a node and the most commonly used node for 3D work is the symmetrical condensed node. At each timestep, voltage pulses are incident upon the node from each of the transmission-lines. These pulses are then scattered to produce a new set of pulses which become incident on adjacent nodes at the next timestep. The relationship between the incident pulses and the scattered pulses is determined by the scattering matrix, which is set to be consistent with Maxwell's equations. Additional elements, such as transmission-line stubs, can be added to the node so that different material properties can be represented.

Full 3D EM Simulation Software

MicroStripes is a powerful 3D simulation software which uniquely employs the Transmission Line Matrix (TLM) method to solve Maxwell’s equations in the time domain. The TLM method is well documented as the most efficient numerical method currently available. Since its inception the developers of MicroStripes have continued to add numerous enhancements to make it more intuitive and easier to use. Today, industry leaders rely upon MicroStripes to meet their demanding expectations and stay ahead of their competitors. With a solid history of Accuracy, Quality and Reliability it is not difficult to see why.

EDA Design Software Tools

Different EDA software to meet your application enviroment:

RF / Microwave Tuners

Focus Microwaves manufactures all components required for a sucessful integration and operation of a Load Pull or a Noise Measurement setup, from frequencies as low as 30MHz and as high as 110GHz. This includes both, on-wafer testing of chips and in-test fixture measurements of packaged devices.