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RFID (641 results)
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- RF interference: Just how important are antennas
- Being able to co-locate multiple RF systems within millimeters of each other in modern wireless devices is in large part due to reducing RF interference. Many of these "interference-busting" innovations are the result of engineers making improvements to antenna systems. by Michael Kassner
- Blog posts 2008-06-15
- Scale-Lag Diversity Reception in Mobile Wideband Channels
- This paper considers the effect of mobility on a wideband Direct Sequence Spread Spectrum DSSS communication system, and study a scale-lag Rake receiver capable of leveraging the diversity that results from mobility. A wideband signal has a large bandwidth-to center frequency ratio, such that the typical narrowband Doppler spread assumptions...
- White papers
- Business Value Messaging: RFID
- The future pace of radio frequency innovation may parallel electricity's speed of advancement in the early 20th century or computer technology in the 1980's and 90's. Radio Frequency IDentification RFID has been around for decades but it is now at the inflection point to drive business process improvement. With large...
- White papers
- Wireless Distributed Communication Systems
- Whatever kind of services is needed, RFS has the complete solution using state-of-the-art and reliable techniques. RFS will help you choose the most cost effective solution for the coverage whether it is a passive or an active network, antennas, or leaky cable. Throughout the world RFS provides complete broadband wireless...
- Case studies
- Michelin Introduces Radio Frequency Tire Identification Technology
- Michelin introduced Radio Frequency Tire Identification Technology and is the first company to begin fleet testing of a radio frequency tire identification system for passenger and light truck tires. Michelin engineers have developed a Radio Frequency IDentification RFID transponder that is manufactured into the tire and stores vital tire identification...
- Case studies
- Smart Antenna Systems
- A smart antenna system combines multiple antenna elements with a signal-processing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment.What does an antenna do in a telecommunications system? It is the port through which radio frequency RF energy is coupled from the transmitter to...
- White papers
- RF Spectrum Policy: Future-Proof Wireless Investment Through Better Compliance
- Radio Frequency RF spectrum is an overlooked but critical resource. It is through the spectrum between 800 MHz and 5.9 GHz that an organization will connect laptops and PDAs to the network, talk on cellular phones, cordless phones, and headsets. Unless properly managed, many of these technologies will crowd the...
- White papers 2008-01-01
- A Guide to Effectively Managing Enterprise Wi-Fi Networks
- Not so very long ago, wireless LAN access was a novelty in the corporate world, largely reserved for curious engineers and privileged executives. Back then, managing the radio activity on a wireless network was often as simple as making sure the CEO could use a notebook computer to gain intranet...
- White papers 2007-09-01
- Does your shop need a spectrum analyzer?
- To help explain why spectrum analyzers are needed, it would be best to first define Radio Frequency Interference RFI. RFI is produced by a RF generating source on the same frequency or nearby frequencies (when considering 802.11 spread spectrum technology) that erodes the quality of another RF communications link. For...
- Blog posts 2007-07-30
- An Application Framework for Efficient, Reliable and Secure Access to Memory Spot
- Memory Spot is a microchip developed by HP Labs at Bristol. Compared to Radio Frequency IDentification RFID devices, Smart Cards and other Near-Field Communication NFC devices, this chip provides much larger storage capacity, faster data transfer rate, and smaller physical dimensions. The chip is normally passive and is energized by...
- White papers 2007-04-18
- Privacy in Radio Frequency Identity Documents
- The use of contactless technology in identity documents is new and drawing significant attention by the lay and technical press, legislators and policy makers at the state and national levels, and a variety of pundits and privacy advocates. The situation is a complex one, with concerns over security and user...
- White papers 2006-11-01
- The Case for Virtualized Wireless Access Networks
- Densely populated areas such as city centers are often sprinkled with numerous wireless access points operated for commercial or private use. Together they create what's known as tragedy of the commons phenomenon: without proper coordination, a significant amount of license-exempt radio frequency resources is wasted due to contention at shared...
- White papers 2006-05-23
- Compliance With FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields
- It is vital to ensure that the emission levels of RFID equipment are measured to ensure compliance with FCC and FDA regulations and in particular with CFR 47 which regulates the Maximum Permissible Exposure MPE limits for human exposure to Radio Frequency Electromagnetic fields. Magellan Technology wishes to endorse, most...
- White papers 2006-04-20
- Making RFIDs Unique - Radio Frequency Certificates of Authenticity
- A Certificate Of Authenticity COA is an inexpensive, digitally signed physical object that has a random unique structure with high cost of near-exact reproduction. An additional requirement is that the uniqueness of COA's random structure can be verified using an inexpensive device. This paper proposes a design for objects that...
- White papers 2006-01-20
- Wideband Envelope Elimination and Restoration Power Amplifier With High Efficiency Wideband Envelope Amplifier for WLAN 802.11g Applications
- High efficiency Power Amplifiers PAs are critical in portable battery-operated wireless communications because they can dominate the power consumption. The traditional Envelope Elimination and Restoration EER system improves the efficiency by driving the Radio Frequency RF transistor in switch mode (Class D/E mode) with a constant amplitude phase signal and...
- White papers 2005-10-26
- Wireless Healthcare - Bluetooth and Beyond
- There are number of different medical devices that can be wirelessly enabled. The key considerations of this are the amount of data, security requirement, power consumptions, radio frequency interference and distance to send. Bluetooth is a standard often used in handheld, battery-operated terminals to provide short-range, low-power connectivity for the...
- White papers 2005-10-22
- Are You Ready for RFID?: The Promise and Challenges of Implementing Radio Frequency
- While still in the very early stages of adoption and rollout, radio frequency identification RFID - touted as the new bar code - holds great promise for retailers, manufacturers, third-party logistics providers and many other organizations. An RFID system consists of an RFID tag on each object to be tracked...
- White papers 2005-09-01
- SNTP Wizard ActiveX (exe)
- SNTP Wizard gives the power to retrieve the exact time from SNTP time servers across the Internet. These times are accurate because they are accessed from Atomic and radio frequency clocks. Some Useful features: Easy to get time information Great for timestamps for Local Time and UTC Can automatically set...
- Software downloads 2005-07-25
- What IT Decision Makers Need to Know
- Wireless fidelity (Wi-Fi) networks improve productivity and mobile access for government agencies by using the radio frequency RF spectrum to transmit and receive data. The latest innovations in wireless technology can offer convenient interoffice network access as well as connect offices and departments throughout the community, creating a high-speed, dependable...
- White papers 2005-07-19
- Performance Evaluation of TCP in an Integrated WPAN and WLAN Environment
- Short-range low power radio frequency systems such as Bluetooth and UWB enable the deployment of Wireless Personal Area Networks WPAN. A WPAN can interface to larger networks to provide broader network access and Internet connectivity. This paper evaluates the performance of TCP over an integrated WLAN and WPAN system using...
- White papers 2005-05-03
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