Wireless & Tele Communications

 

Radar Responsive Tags for Non-GPS Tracking Real-Time Location System (RTLS)

Radar Responsive (RR) technology was developed for the US Military at Sandia National Laboratories in the 1990s for specific long-range geolocation applications. The technology lead to the E911 system in the US (emergency geolocation with cell phones). GENTAG owns exclusively the civilian (non-military) sensor version of the technology (tested under patent 6,031,454 at Sandia). The […]

Read more >>> Radar Responsive Tags for Non-GPS Tracking Real-Time Location System (RTLS)

Siretta Antennas, UK based M2M antenna specialist unveiled its Oscar 15 antenna, a rugged 2.4GHz antenna designed for increasing working range between access points and remote sites. The Oscar 15 antenna uses a high gain directional patch design enabling it to operate on the global licence exempt 2.4-2.5GHz ISM band. This ensures its suitability to […]

Read more >>> Long-Range 2.4GHz Antenna for ZigBee Bluetooth WLAN Applications

CML Microcircuits launched the single-chip Digital Private Mobile Radio (dPMR) Baseband Processor CMX8341. The CMX8341 is targeted directly at low cost, licence free digital PMR (dPMR) radios conforming to the ETSI standard, TS102 490. Dual mode analogue/digital PMR operation, high integration, low power consumption and small size are key factors for this market segment; the […]

Read more >>> Digital Private Mobile Radio (DPMR) Baseband Processor for Two-Way Walkie-Talkie Phones

Silicon Laboratories Inc. launched the industry’s most integrated, cost-effective and power-efficient Subscriber Line Interface Circuit (SLIC) for VoIP Gateways. The new Si3226x Dual ProSLIC family delivers the smallest bill of materials and board area and the lowest power consumption of any dual SLIC available. The Si3226x family provides an ideal solution for low-channel-count VoIP customer […]

Read more >>> Subscriber Line Interface Circuit (SLIC) for VoIP Gateway

Institute of Electrical and Electronics Engineers have completed the new IEEE 802.22 wireless network standard, Known also as Super WiFi Wireless Broadband. They’ve been working on this new standard since 2004, but it’s finally ready. The huge advantage here is that the standard will be able to have a 62 mile range (100 km) from […]

Read more >>> IEEE802.22 WRAN – Super WiFi Wireless Broadband Network

Error-correcting codes discovered at MIT can still guarantee reliable communication, even in cellphones with failure-prone low-power chips. One of the triumphs of the information age is the idea of error-correcting codes, which ensure that data carried by electromagnetic signals — traveling through the air, or through cables or optical fibers — can be reconstructed flawlessly […]

Read more >>> Error-Correcting Codes for Reliable Wireless Communication

Toshiba developed RF Phase Noise Reduction Technology that reduces jitter in radio-frequency signals, cutting phase noise by up to 90 percent. This breakthrough development opens the way for a further migration to high-speed wireless communication chips for wireless LAN and WiMAX. Radio frequency phased locked loops (PLL) in mobile communication LSI chips were typically structured […]

Read more >>> RF Phase Noise Reduction Technology for High-Speed Wireless Communication Systems

Electromagnetic Interference (EMI) or Radio-Frequency Interference (RFI) can be described as any form of electrical disturbance signal or noise generated by electronic devices may negatively affect other electronic devices, and is active throughout the environment. Its effects vary from impaired TV or radio reception to severe disruption of communications, data processing and medical and defense […]

Read more >>> RFI and EMI Shielding Filters to Suppress Electromagnetic Interference (EMI)

Surface Acoustic Wave (SAW) Resonators utilize mechanical vibration of piezoelectric material, while LC/RC utilizes electrical resonance. Oscillators using a SAW Resonator are stable against peripheral circuit or supply voltage fluctuation, providing freedom from adjustment. SAW Resonator employs surface acoustic wave, and is able to be applied to high frequency circuit where conventional crystal, ceramic resonators […]

Read more >>> Surface Acoustic Wave (SAW) Resonators and Oscillators

Surface Acoustic Wave (SAW) Filter is a frequency filter whereby the electrical input signal is converted to a acoustic wave by so-called interdigital transducers (IDTs) on a piezoelectric substrate such as quartz. The space between the IDTs, across which the surface acoustic wave will propagate, is known as the delay-line. The delayed outputs are recombined […]

Read more >>> Surface Acoustic Wave (SAW) Filters

Libelium announced the launch of Over-the-Air Programming (OTAP) for Wireless Sensor Networks and the Internet of Things. This brings Over-the-Air (OTA) capabilities for the first time to unlicensed frequency bands (2.4GHz, 868MHz, 900MHz) and to low power wireless communication using protocols such as IEEE802.15.4 and ZigBee wireless. Over the last decade wireless programming or over […]

Read more >>> Over-the-Air (OTA) Programming with ZigBee for Wireless Sensor Network

Tektronix Sentry® is a comprehensive digital-content monitoring solution for advanced video networks. It enables video service providers to deliver services with optimum quality while reducing operational expenditures. Sentry identifies anomalies in the network at the IP and MPEG layers, as well as in Quality of Experience (QoE), identifying issues including frozen video, tiling/macroblocking, black screen, […]

Read more >>> Digital Content Monitoring for Video Network Quality

WiFi Protected Access (WPA) and WiFi Protected Access II (WPA2) are two security protocols and security certification programs developed by the WiFi Alliance to secure wireless computer networks. WiFi Protected Access (WPA) is a security standard for users of computers equipped with WiFi wireless connection. It is an improvement on and is expected to replace […]

Read more >>> WiFi Protected Access (WPA) – Wireless LAN Network Security Encryption

Wired equivalent privacy (WEP) is a broken security algorithm for IEEE 802.11 wireless networks. WEP is widely used and is often the first security choice presented to users by router configuration tools. Wired Equivalent privacy uses the stream cipher RC4 algorithm for confidentiality and CRC-32 checksum for integrity. WEP has been widely criticized for a […]

Read more >>> Wireless LAN & WiFi Security Encryption – Wired Equivalent Privacy (WEP)

Designing fiber optic networks involves finding the most efficient way to connect phones and computers that are in different places – a costly and time-consuming process. Now researchers from North Carolina State University have developed a model that can find optimal connections 10,000 times more quickly, using less computing power to solve the problem. “Problems […]

Read more >>> Model Finds Fiber Optic Network Connections 10,000 Times Faster – Optical Communications and Networking

CDMA (Code-Division Multiple Access) is used in 2G and 3G wireless communications. CDMA is a form of multiplexing, which allows numerous signals to occupy a single transmission channel, optimizing the use of available bandwidth. The technology is used in ultra-high-frequency (UHF) cellular telephone systems in the 800-MHz and 1.9-GHz bands. Here is a list of […]

Read more >>> CDMA Projects – Wireless Telecom Projects

Optical transmission systems with Terabits per second single-channel line rates no longer seem to be too far-fetched. New services such as cloud computing, three-dimensional high-definition television and virtual-reality applications require unprecedented optical channel bandwidths. These high-capacity optical channels, however, are fed from lower-bitrate signals. The question then is whether the lower-bitrate tributary information can viably, […]

Read more >>> 26 Terabit Laser Optical Data Transmission for Ultra High-Speed Broadband Internet

Isolated Magnetic Dipole (IMD) Antenna, Ethertronics’ patented, award winning, antenna technology that resists detuning in real life situations. It was developed to meet the rapidly growing need for increasingly sophisticated embedded antenna solutions. The result of years of research, development and testing, IMD consistently outperforms competing technologies in terms of smaller size, greater coverage and […]

Read more >>> Isolated Magnetic Dipole Antenna for GPS Bluetooth WiFI & WiMax

B&B Electronics has developed a high-speed long-range wireless ethernet bridge (Transmitter & Receiver), known as GhostBridge Wireless Ethernet Bridge, is a secure Wireless Ethernet communication system that operates for line-of-sight distance of upto 15Km. It operates at 5 GHz radio band that is built from 802.11n 2×2 MIMO technology, and can deliver over-the-air speeds of […]

Read more >>> Long-Range Wireless Ethernet Bridge (Transmitter & Receiver)

Dust Networks, the leader in intelligent wireless sensor network solutions, has designed Self-Powered IPV6 Wireless Sensor Network, the SmartMesh® IP 6LoWPAN wireless network running on harvested energy. For the first time anywhere, all of the nodes in the network, including the IPv6 routing nodes, will run on energy harvested from a variety of devices including […]

Read more >>> Self-Powered IPV6 Internet Protocol Wireless Sensor Network – SmartMesh IP 6LoWPAN

Showing results 21 - 40 of 119 for the category: Wireless & Tele Communications.