Radio frequency identifier

To overcome these issues the industry is now looking at the possibility of using new generation AIDC technology like the RFID. A radio frequency identifier (RFID) system is basically composed of an RFID transponder (tag) and an... 

UV curable flexo ink for RFID antennas Radio frequency identification (RFID) devices and contactless smart cards are capable of uniquely identifying an individual or object when they are interrogated by an external radio frequency signal. Recently, a process of printing with the use of UV curable conductive flexo inks has been introduced. The inks are based on polyfunctional acrylates with silver flakes added for the electrical conductivity. The advantages of these inks are ... 

The assignments are made through a battery of techniques to identify the through-bond and through-space interactions. Multidimensional NMR spectra are taken in which the sample is irradiated by two radio frequency fields in... 

The reaction mechanism of the photoinduced interaction between Et3SnCH2CH=CH2 (11) and CChBr was also studied by means of another physical method — the so-called radio frequency (RF) probing technique49. To facilitate the interpretation of CIDNP data and to identify the primary reaction stage which does not involve radical pairs, it is convenient to start from the RF probing technique. 

ENDOR (Electron Nuclear Double Resonance) involves the simultaneous application of a microwave and a radio frequency signal to the sample. This is a technique invented by Feher in 1956. The original studies were on phosphorous-doped silicon. A description of the experimental results and apparatus used is presented in two Physical Review articles [24, 25], An excellent treatment of EPR double resonance techniques and theory is given in the book by Kevan and Kispert [26], What follows here is the theory and application of ENDOR used the in analysis of single crystal data with the goal of identifying free radical products in DNA constituents. 

These surface modifications were performed in "pure" micro-wave (2.45 GHz, "single-mode") or in combined microwave/ radio frequency (2.45 GHz/13.56 MHz, "dual-frequency") plasma. Important systematic changes of the surface composition, wettability, and adhesion of thin metal films were observed for different substrate bias values, and for the different gases. The modified surface-chemical structure is correlated with contact angle hysteresis of water drops this helps to identify which surface characteristics are connected with the wettability heterogeneity and with adhesive bonding properties, and how they are influenced by plasma-surface interactions. 

Mass-produced tire-pressure monitoring systems perform these functions by using battery-powered wheel electronics that are able to measure the air pressure and temperature inside the tire. Together with coded information for individual wheel identification and data about battery lifetime, these values are transmitted as radio frequency data messages to an RF antenna mounted in the wheel arch. The data messages are sent independently by all the wheel electronics in a certain time-slot pattern or extracted on demand by using a transmission trigger. A central control unit evaluates the data, identifies the tire, and decides whether the driver should be informed. Each tire is monitored separately. The related air pressure is converted to the standard pressure by means of a temperature characteristic. 

The tag produces an identification (ID) signal, i.e., a radio frequency (RF) signal carrying identification information, capable of being interpreted by an electronic reader device. A preferred tag is fabricated using a printing process to mark a conductive pattern, e.g., comprised of a conductive ink based on silver, carbon, etc., on a flexible substrate, e.g., polyvinyl chloride. In at) -ical application, the flexible substrate is then preferably used to form a wrist band that can be used to identify an individual to permit, deny or otherwise determine the level of access to an area, e.g., a concert, a work area, or other restricted enviromnent. 

Air Tasking Orders (ATOs) While the ACO and ARFs contain general information that applies to all aircraft in OPC, specific mission guidance was published in the daily ATOs. They contained the daily flight schedule, radio frequencies to be used, IFF codes (used to identify an aircraft as friend or foe),... 

Controls Controls included the ACO, the ATO, flowsheets, radios, IFF) the ROE, training, the AWACS, procedures to keep fighters and helicopters from coming into contact (for example, they fly at different altitudes), and special tactical radio frequencies when operating in the TAOR. Flags were displayed prominently on all aircraft in order to identify their origin. 

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