Products/Services for Coil Design 2.4 GHz RFID

  • Antennas-Image
    Antennas - (1117 companies)
    ...the plane to reduce power waste and increase transmission distance. Directional antennas are designed to propagate radio waves in a specific direction with a high concentration of focus. These are excellent for direct communication between two points...
    RFID Readers - (149 companies)
    ...must be three times the field needed to maintain communication. Readers compatible with passive tags require a larger, in-phase coil antenna as well. Frequencies. The accompanying table represents the most common frequencies used by RFID equipment...
  • RFID Software-Image
    RFID Software - (117 companies)
    RFID tags, tiny transponders that attach to RFID antennas. Others are designed to print RFID labels that include human-readable text or barcodes. RFID software for handheld devices such as readers, encoders, and scanners can reside on a network server...
    RFID Transceivers - (47 companies)
    ...better encryption than those which use RFID readers and tags. The applicable range of the transceiver is often limited to within several inches as a feature, not a design constraint. Frequencies. The accompanying table represents the most common...
  • Inductors, Coils, and Chokes-Image
    Inductors, Coils, and Chokes - (1018 companies)
    Inductors coils and chokes are passive components that are designed to resist changes in current and store energy in the form of a magnetic field. Inductors, coils and chokes are passive devices that are designed to resist changes in current...
    RFID Tags - (151 companies)
    ...the energy needed to maintain communication. Consequently, passive RFID tags have ranges of less than several feet. This characteristic can be both a design benefit (such as in credit cards) or drawback (such as in warehouse inventory). Image credit: Intech...
    Motor Coils - (26 companies)
    ...different types of products. Some motor coils are designed for specific types of alternating current (AC) or direct current (DC) motors. Types of Motor Coils. Product categories include: AC motor coils. DC motor coils. linear motor coils. stepper...
    Coil Heaters - (141 companies)
    Coil heaters and cable heaters are heating elements formed from straight (uncoiled) segments of round or square heating cable. Coil heaters and cable heaters are elongated heating elements. They include heating cables as well as coil heaters...
    RFID Chips - (41 companies)
    RFID Chips, or radio frequency identification chips use radio signals to transmit data over short distances. They are typically used for security, tracking and identification applications. RFID Chips can be paired with other circuitry to create...
    Voice Coil Actuators and Motors - (27 companies)
    ...and motors generate force when subjected to an electrical current or magnetic field. The coil within the motor is the only moving component and is usually attached to a moveable load with a device such as a voice coil valve. This design permits high-speed...

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  • An RFID based framework for race tyre companies customer satisfaction survey
    Low-and High-Frequency (LF and HF,respectively) antennas are usually coils because these frequencies are predominantly … Passive tags typically operate at frequencies of 125 kHz, 13.6 MHz, 915 MHz or 2.4 GHz and they have a read range that strongly depends on the dimension of the antenna, that typically ranges from few centimeters to about 10 … The RFID passive chip, depending on its design , may be Read-Only (RO), Write-Once Read-Many (WORM) or read write (RW).
  • Design of unique simulators to evaluate medical device susceptibility to radio frequency identification exposure
    We developed four separate simulators which cover four dis- tinct RFID frequency bands: Low frequency (LF): 125 kHz; High frequency (HF):13.56 MHz; Ultra high frequency (UHF): 915 MHz; and 2.4 GHz . Design of Unique Simulators to Evaluate Medical Device Susceptibility to Radio Frequency Identification Exposure … 13.56 MHz where no radiated EMC test methods exist, we designed Helmholtz coils to produce the …
  • A Low-Power RFID Integrated Circuits for Intelligent Healthcare Systems
    … distance, typically, the communicated distances are limited to less than 20 cm by coils antenna coupling in … Due to the demands for higher data rates, longer reading distances, and smaller antenna sizes, people will be more interested in the UHF 868/915-MHz or microwave 2.4 - GHz industrial, scientific, and medical (ISM) bands. Table I illustrates the comparison of properties between 802.11 b, Bluetooth, ZigBee, and RFID systems. It reveals that the selected UHF 868/915- MHz in RFID design is preferred for healthcare systems to …
  • Wearable Monitoring Systems
    RF transmissions in the 900 MHz to 2.4 GHz range are essentially useless in a tissue medium due to water-based attenuation (Sharma and Guha 1975). They can also provide power to (and receive data from) passive RFID chips (Microchip 1998), some of … Animal applications (e.g., swallowable health monitoring pills for cattle) have pushed the start of the art for such designs , since transmit/ receive distances can be on the … … swallowable pill in the reticulum and a receiver coil on a halter (Hoskins …
  • Implementation and application of UHF RFID antenna
    RFID tags come in many forms but all comprise an integrated circuit on which in use data can be stored and a coil which enables it to be interrogated by a reader which also powers it by means of a wireless link. The most common different transmission frequencies are classified into the four basic ranges, LF (low frequency, e.g. 125KHz), HF (high frequency, e.g. 13.56MHz), UHF (ultra high frequency, e.g. 868MHz or 915MHz) and microwave (e.g. 2.4GHz ). In this paper, design and fabrication of the UHF RFID antenna is presented.
  • Computers Helping People with Special Needs
    … the antenna coil of the reader induces a magnetic field in the antenna coil of the tag. Three frequency ranges are gen- erally used for RFID system: low (100~500 KHz), intermediate (10~15 MHz), and high (850~950 MHz and 2.4 ~5.8 GHz ) [4]. … output power level of the reader to communicate with the tags and the design of the antenna …
  • Ferroelectrics in Microwave Devices, Circuits and Systems
    The reflection type phase shifters (modulators) used as RFID backscatterers are re- ported in (Scheele et al … The resonators are implemented as printed lumped element coils in parallel or in series with thick film … The circuit area is less than 2.4 mm2 . … shift is more than 70 degrees under 100 V DC bias and at about 3.0 GHz . … based ferroelectric phase shifter (Fig. 5.3.5, Kenney et al. 2006) is designed to operate in …
  • 2010 Index IEEE Transactions on Industrial Electronics Vol. 57
    A 2.4 - GHz CMOS Short-Range Wireless-Sensor-Network Interface for Au- tomotive Applications. … TIE May 2010 1546-1554 A CMOS Transceiver for a Multistandard 13.56-MHz RFID Reader SoC. … TIE Aug. 2010 2851-2857 New Transient Detection Circuit for On-Chip Protection Design Against System-Level … Coils .
  • Rectangular coils optimization for wireless power transmission
    Baker, M. W., and R. Sarpeshkar (2007), Feedback analysis and design of RF power links for low … Chou, H.-T., P.-H. Hsueh, T.-M. Hung, L.-R. Kuo, and H.-H. Chou (2011b), A dual-band near-field focused reflectarray antenna for RFID applications at 0.9 and 2.4 GHz , Radio Sci., 46, RS6010, doi:10.1029/ … Duan, Z., and Y. X. Guo (2011), Rectangular coils modeling for inductive links in implantable biomedical devices …
  • A small OCA on a 1/spl times/0.5-mm/sup 2/ 2.45-GHz RFID Tag-design and integration based on a CMOS-compatible manufacturing technology
    … load completely being matched with the output resistance of the rectifier) has been obtained from the output of the rectifier as the OCA being inductively coupled with reader antenna that was driven by a 1-W 2.4 - GHz CW power source. As the RFID tag chip with OCA was presented under a 2.45-GHz RFID reader, the … This letter presented a small OCA structure on its design and fabrication technology. … designed based on in- ductive-coupling model with a shielding layer between the coil of OCA and …

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