Archive for the ‘Design’ Category

Embedded GPS receiver targets timing apps

Monday, April 13th, 2009

Trimble has introduced an embedded GPS receiver for timing applications. The Resolution-SMT GPS receiver enables system integrators to add precise GPS to provide location, Coordinated Universal Time (UTC) and synchronization to many products or systems where cost or size had previously been a limitation.

Precise timing and synchronization is vital to today’s wireless infrastructure, efficiently controlling the flow of network information data to maximize the use of bandwidth. The Resolution-SMT receiver provides a low-cost, easy to use, highly accurate and reliable GPS timing source for the telecommunications, broadcast synchronization, power transmission and wireless industries.

The Resolution-SMT is a complete, ready-to-go timing receiver in a 19mm x 19mm x 2.5mm shielded module. The small, thin, single-sided receiver is packaged in tape and reel for pick and place manufacturing processes. It features a reflow-solderable edge castellation interface so the module can be incorporated in a product design without costly I/O and RF connectors.

Timing features of the Resolution-SMT receiver include: automatic self-survey to ensure accurate reference position for improved timing accuracy; the overdetermined timing mode provides an accurate 1 PPS synchronized to GPS/UTC within 15ns (one sigma); timing receiver autonomous integrity monitoring (T-RAIM) to assure high PPS integrity in overdetermined timing mode; and other features. The modular design also allows for reduced integration time and low implementation risk.

The Resolution-SMT Starter Kit equips designers who need to begin adding the latest GPS timing capability into their application. The Resolution-SMT receiver uses Trimble Standard Interface Protocol or NMEA.

The Resolution-SMT receiver and starter kit are available now through Trimble’s worldwide Component Technologies sales network.

- Henri Arnold
EE Times Europe

FreeWave Technologies Expands Embedded Radio Systems With New Government Frequencies of 1.3 GHz and UHF Bands

Wednesday, April 8th, 2009

Newest frequencies offer ideal platforms for use in sensors, UAVs, UGVs or anywhere small size, light weight and high-performance are critical

BOULDER, Colo., April 8 /PRNewswire/ — FreeWave Technologies, (http://www.freewave.com), the largest independent provider of high performance spread spectrum and licensed radio products and services, today announced the release of two new additions to its MM2 family of high-performance, tiny form factor radios: the MM2-M13 and the MM2-MU. The MM2-M13 product line operates in the 1.3 GHz band and the MM2-MU operates in the UHF band. The new radios complement FreeWave’s earlier MM2 family of products that operate in the 900 MHz band with both serial and Ethernet interfaces. The two newest additions to the MM2 family offer government and military OEMs the ability to tap the MM2’s tiny footprint and high-performance for space and weight critical applications, such as sensors, Unmanned Aerial Vehicles (UAVs) and Unmanned Ground Vehicles (UGVs).

The new products were developed based on customer input. “Our customers told us they were looking for a small form factor radio with the performance of the larger FreeWave radios in the same 1.3 GHz and UHF government frequencies,” explained Harold Christopher, product manager for FreeWave’s MM2 Systems. “Our customers wanted a radio that was robust and reliable enough to fly the whole mission while being compatible with existing, deployed systems. FreeWave has come through with the introduction of the MM2-M13 and MM2-MU families of 1.3 GHz and UHF radios.”

While small in size, the radios provide the same features and functionality as FreeWave’s full-size military/government band radios. The MM2-M13 family of radios is backwards compatible with FreeWave’s P Series family of radios and the MM2-MU family is backwards compatible with the company’s F series wideband family of radios. This allows customers to replace their existing radios with a much smaller footprint in unmanned vehicles together with a standard size or enclosed radio at the base station or use the same base station with new UAVs. “Backwards compatibility is a key FreeWave hallmark,” Christopher explained. “Our customers can use the new radios in aircraft or vehicles without modifying their ground control equipment that currently uses the full size FreeWave radios.” Both radios also can fit into small handheld controllers, he added.

With their light weight and small size, the new radios are the ideal communications platform for the control and monitoring of UAVs and UGVs as well as other unmanned vehicles used throughout the world. Other applications include: guided parachutes, sensor networks and many others. Light weight and small size are key factors in allowing UAVs to fly longer missions. Longer missions equate to more intelligence from the UAV – saving lives on the ground.

Features include:

  • A full 2 watt (1W for the MM2-M13) transmitter power extends the range of the radio to more than 60 miles.
  • Increased operating voltage to 8-32 VDC to provide broader compatibility with various unmanned systems. 5 VDC versions also are available.
  • The ability to operate as a slave/repeater further extending network range and coverage.
  • Receive sensitivity of – 107 dBm for BER 10^-4 extending its range for longer missions and better intelligence.
  • RS232/485 or TTL interface is available for easy adaptation to existing and new unmanned systems. Ethernet versions of these radios also are available providing Ethernet connectivity and two RS232 ports.
  • 230.4 kbps max throughput for transferring critical data back to ground troops fast.
  • 50.8mm X 50.8mm and 21 g.

Availability

FreeWave is currently accepting orders for both the MM2-MU and the MM2-M13. FreeWave’s new MM2-M13 and MM2-MU radios will be available for shipment later in the second quarter. For more information, click on:

http://www.freewave.com/products/military-radios.html

About FreeWave Technologies

Founded in 1993, FreeWave Technologies is a world leader in the innovative design and manufacture of license-free spread spectrum and licensed band radios and wireless data solutions that are trusted for mission critical applications around the world. Based in Boulder, Colorado, the company offers network design, path studies and pre-installation engineering services to enable reliable, error free data-flow in even the most challenging conditions and in environments. FreeWave is the only long term radio provider with in-family 100 percent backward compatibility with fully integrated, best-in-class engineered products. For additional information, contact FreeWave directly at 866.399.4930 or at newsinfo@freewave.com. Visit the company’s website at www.freewave.com.

    Press Contact:
    Terri Douglas
    Catapult PR-IR
    303.581.7760, ext. 18 (office)
    303.808.6820 (cell)
    tdouglas@catapultpr-ir.com

SOURCE FreeWave Technologies, Inc.

Microchip Introduces AC/DC Reference Design with Digital Power Advantages

Friday, April 3rd, 2009

Microchip Technology Inc., a provider of microcontroller and analog semiconductors, announced an AC/DC reference design based on the new dsPIC33F “GS” series of digital-power Digital Signal Controllers (DSCs).

The company said the reference design demonstrates how digital-power techniques are applied to reduce component count, lower product cost, eliminate oversized components, and incorporate topology flexibility to create the best solution for the application.

Microchip said its Digital Power AC/DC Reference Design unit works with a universal input voltage range and produces three output voltages. The continuous power output rating of the unit is 300 watts. The front-end Power Factor Correction (PFC) boost circuit converts universal AC input voltages to a 420 VDC bus voltage.

“The flexible new dsPIC33F “GS” series of DSCs are featured and priced to help ignite significant digital power innovation,” said Rich Hoefle, marketing manager of Microchip’s High Performance Microcontroller Division. “We could have configured the topology of this reference design any number of ways, using the same two DSCs. More than anything else, this reference design is a springboard for customers to develop their own intellectual property to differentiate their digital power solutions in the marketplace.”

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For full details on Microchip Technology Inc (MCHP) click here. Microchip Technology Inc (MCHP) has Short Term PowerRatings of 3. Details on Microchip Technology Inc (MCHP) Short Term PowerRatings is available at This Link.