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The ACE Network is a Network of excellence in the European 6th framework IST. It will structure the fragmented European antenna R&D, reduce duplications and boost excellence and competitiveness in key areas. ACE deals with the antenna function of radio systems.
ACE - Antenna Centre of Excellence
Vetronics Architectures Emerge to Facilitate Network-Enabled Operations Battlefield communications capabilities have emerged as a top military priority. As a result, vehicle electronics (often combined as “Vetronics”) architectures are evolving to ensure that military assets can effectively serve as part of a holistic communications network. Our new white paper, Vetronics Architectures Emerge to Facilitate Network-Enabled Operations, reviews the genesis and implementation of the NEO paradigm, and explores how Vetronics architectures are changing communications among virtually all battlefield assets.
Navy orders shipboard software-defined radio systems from General Dynamics in $146.3 million contract - Military & Aerospace Electronics
Smart homes of the future will automatically adapt to their surroundings using an array of sensors to record everything from the building’s temperature and humidity to the light level and air quality. One hurdle impeding the development of such intelligent homes is the fact that existing technology is still power hungry and today’s wireless devices either transmit a signal only several feet, or consume so much energy they need frequent battery replacements. Researchers have now developed sensors that run on extremely low power thanks to using a home’s electrical wiring as a giant antenna to transmit information. The technology devised by researchers at the University of Washington and the Georgia Institute of Technology uses a home’s copper electrical wiring as a giant antenna to receive wireless signals at a set frequency, allowing for wireless sensors that run for decades on a single watch battery.
Smart home sensors use electrical wiring as an antenna
Spectrum: Technology to Talk to Trapped Miners
NIOSH eventually came up with two competitive solicitations for primary communication systems, which it defines as those designed to operate in the conventional radio frequency band (from a few hundred kilohertz to a few gigahertz). Miners either carry handheld radios or wear radio tags. NIOSH awarded a contract to Pillar Innovations of Grantsville, Md., for its rugged leaky-feeder system.
Panasonic has developed a high power Gallium Nitride (GaN) transistor for long-distance communication at millimeter-wave frequencies. A 25GHz wireless transceiver was fabricated using the GaN transistor. The device exhibits a maximum output power of 10.7W at 25GHz which theoretically enables communication over 84km. 25 GHz communication would enable multi-gigabit per second data communication (super fast wireless broadband). The high power GaN transistor, fabricated on a silicon (Si) substrate is suited for mass production and takes advantages of the large diameter achievable with Si The fabricated transceiver utilizes orthogonal frequency division multiplexing (OFDM) which is suited for high capacity data communication.
Millimeter-wave communication Over 84 Kilometer Range Using Panasonic Gallium Nitride Device
Editor/Authors are : Brian Wang, Director of Research. Sander Olson, Interviews and other articles Phil Wolff, Communications and social technologist. Alvin Wang. Computer, technology, social networking, and social media expert.
What Is Real 4G cellphone Communication Technology
Unit 2. Radio-Communications Theory
21. Radio-Wave Creation and Propagation N this unit we briefly look at the historical development of radio communications and introduce the principles of electromagnetic (EM) radiation.Radio-Frequency Communication
31. High-Frequency (HF) Communications N this unit well examine discuss specific aspects of radio communications across the radio-frequency band of the electromagnetic spectrum. Since HF is the primary mode of our communications well look at it first. Specifically, well cover examine HF wave propagation, the ionosphere, and its effects on propagation. Well also examine HF engineering ideas, limitations on the use of HF, and satellites and their effect on HF communications.
Design and develop a high repetition rate, high peak power, low size, weight and power consumption solid-state laser operating in the blue-green portion of the electromagnetic spectrum for high data rate underwater laser communications. Pulse repetition frequency (PRF) should be on the order of 100’s to 1000’s of kHz, pulse widths on the order of 10’s of nanoseconds and pulse energies on the order of 1-200 microjoules. The exact PRF must be variable and will be dependent on the communications modulation rate. Preferred operating wavelengths of operation would be at one or more of the following 1) 532 nm 2) a wavelength around 530 nm +/- 40 nm 3) a wavelength within the blue-green spectrum where transmission through the water is highest for a given water type. Lasers that have a tunable center wavelength with the same PRF, pulse widths and energies as specified above would be desired but not required. Description: