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  • Radio Link Calculations
    The following application note describes the application and utilization of the "Link_Calc.xls" worksheet. Link_Calc.xls is an interactive point to point radio link calculation worksheet which can be used by system designers to assist in the selection of the appropriate antennas, cables, radio
  • Excel Spreadsheet to Perform Radio Link Calculations (.xls)
  • SDARS-Antenna-Diversity-Schemes for a better Radio-Link in Vehicles (.pdf)
    The most challenging task for digital mobile satellite broadcast reception is to satisfy a variety of combined requirements for automotive applications. According to the US satellite digital broadcast system (SDARS) the antenna parameters according to the SDARS-Antenna Specification have to be met.
  • Medical Device Link .
    to work) can inhibit the use of an unseen radio link to replace a hardwired connection. Let's first examine how wireless connections can increase operational efficiency while maintaining accuracy. Medical records can be accessed by a medical practitioner from any place and at any time by using
  • Solving Your Radio Frequency Interference Problems (.pdf)
    signals where they shouldn't be. We will also discuss interference caused by intermodulation. We specifically do not discuss power line interference, which is too broad a topic to be given proper treatment here. Interference can occur at any frequency from below the AM broadcast band to microwave link
  • UHF Radio Modem Supports Computerized Irrigation Control (.pdf)
    Competitive, modern crop production on irrigated land demands that growers make the most of available equipment, water and time. Remote, computerized control of common pivot irrigation systems relies on wireless communications. As essential as a wireless communications link may be, it remains out
  • MityDSP (R)-L138F Software Defined Radio Using uPP Data Transfer
    Critical Link was approached by a customer who needed to develop a spread spectrum radio transceiver for several applications. The end result of this project was a prototype system that has been used as a proof-of-concept for several applications. The combination of TI's OMAP-L138 DSP+ARM (R
  • Medical Device Link . EMI at the Patient Cable Radio-frequency interference poses a major threat to sensitive patient cables, but there are several ways to address this problem with success.
    of radio interference. Worse yet, there is a strong possibility that FDA will increase radiated immunity limitations in the future. This article focuses on radiated interference issues surrounding patient cable terminations. Moreover, because traditional solutions are not possible with such terminations
  • Remote Communication with a Train via GPS
    CAS DataLoggers recently supplied the datalogging solution for a major sugar cane grower using a wireless radio link to communicate with a sugar train running on an extensive rail network around the plant. Over time the customer had experienced breakdowns in their communications links which led
  • Medical Device Link . Protecting Devices from Radio-Frequency Transmitters New EMC guidelines will help engineers test and manage electromagnetic interference from nearby transmitters.
    the tests, are: ANSI C63.18, "Recommended Practice for an On-Site, Test Method for Estimating Radiated Electromagnetic Immunity of Medical Devices to Specific Radio-Frequency Transmitters," and AAMI technical information report (TIR) 18, "Guidance on Electromagnetic Compatibility of Medical Devices
  • Smart Computing Article - Bluetooth Freedom
    July 2000 Vol.8 Issue 7 Page(s) 30-31 in print issue Add To My Personal Library Connecting The World Without Cables The Bluetooth radio link allows for the potential connection of some very unique things in the future. Your Bluetooth refrigerator senses that there hasn't been any milk inside
  • Medical Device Link .
    First Wireless Chip Designed for In-Body Communication Systems Debuts ) has introduced the world 's first transceiver chip designed exclusively for wireless communication systems that link implanted medical devices and base stations. The ZL70100 ultra-low-power transceiver chip fully meets the MICS
  • Medical Device Link .
    the use or necessity of a physical connection. Of primary importance to the medical device designer trying to assemble a wireless link is an estimation of the data rate and data range of a low-power, low-data-rate radio. Fortunately, there are a few simple equations that can help provide a practical
  • Medical Device Link .
    only one-way communication at data rates of around 50 Kb/sec over a range of only a few inches, whereas MICS solutions that use a radio-frequency (RF) link can achieve up to 250 Kb/sec at a range of around 6 ft. The Federal Communications Commission (FCC) allocated the 402 -405 MHz frequency band
  • Medical Device Link .
    . New ultra-low-power radio-frequency (RF) technologies are spurring the development of innovative medical tools, from endoscopic camera capsules that are swallowed, to implanted devices that wirelessly transmit patient health data. Communication links between external programming devices (or base
  • Extending 2.4 GHz ZigBee Short Range Radio Performance with Skyworks Front-End Modules
    The IEEE Std 802.15.4TM-2003 [2] sets the requirements for the -85 dBm one percent. packet error ratio (PER) minimum sensitivity. The 2.4 GHz receiver link uses offset. quadrature phase-shift keying (O-QPSK) modulation with direct sequence spreading. spectrum (DSSS) techniques. The main benefit