?????????? Radio Frequency Identification (RFID)
????? ?????????????? ????????????? ????????, ?????????? ??? ??????????? ?????? ??????????? ?????????????. ??????? RFID-????? ?? ?????-????. ???????? ?????????? ?????????????? ?????????????. ??????? ????????????? ?????????? ? ?????? ???????? ?????????.
Подобные документы
The concept and the basic principles of electronics as a scientific field, the history of its development and modern achievements. Classification and types of antennas, basics principles of operation. The materials used in the manufacture of antennas.
??????? ???????, добавлен 25.11.2013???????? ?????, ?????????? ? ??????????? ????????????? ?????????. ?????????????, ?????????????? ? ???????? ??????? ???????. ??????????? ????????????? GSM ? Radio-Ethernet ??? ??????????? ??????????? ? ?????????. ??????????? ???????? ???????????? ?????.
???????, добавлен 09.01.2010???????????? ??????????? ??????????? ???????????-????????????? ????? ? ?????????? ?????? ??????????? ????????? ? ??????? ?????????????? ?????????????? ?????? ? ??????? ????????????? ?????????? ??????????? ?? ?????????? SDR (software defined radio).
??????, добавлен 30.10.2018??????????? ? ??????????? ????????? ???? ???????? ?????????? "General Packet Radio Service". ????? ???????????? ?????????? ???????????? ???????? ?????? ? ??????? ????? "Enhanced Data rates for GSM Evolution". ???????????? ????????? ????? EDGE ? GPRS.
??????????? ??????, добавлен 09.01.2014???????? ????????? ????? ? ??????? ????? ????? ?? ???? GSM (Global System for Mobailcommunition). ????????? ?????? ???????? ???????? ?????? GPRS (General packet radio service) ? ??????? ?????. ?????? ? Internet ???? ? ??????? ?????????? ????????.
???????, добавлен 17.11.2020A method that allows to largely overcome the diffraction limit, as well as noise and other interferences in radio imaging devices (including ground and space telescopes) of millimeter, terahertz and far infrared ranges of the electromagnetic radiation.
??????, добавлен 07.11.2018Characteristics of television in South Korea, the impact on everyday life. A number of national television networks and cable operators in the country. The history of Korean television drama and the first series. The development of broadcasting in Korea.
???????, добавлен 06.01.2015????? ?????? ?????? ??????????? ????????? ????????????? ????????? ? ???????????? ????????? ????????????? ?? ????????? ?????????????????, ??????????? ?? ?????? ?????????? Software Defined Radio. ?????? ????????? ?????? ?????? ??????? ? ??????? Mathcad.
??????, добавлен 24.09.2016???????, ?????????????? ? ??????????? WiMAX. ????????? ? ???????????? OFDMA (Orthogonal Frequency Division Multiple Access), ????????????? ??????????. ??????????? ???????? ????????????. ?????????? ????????? ? ?????????????. ???????? ?????? (????????).
???????? ??????, добавлен 09.04.2010An iterative approach to the construction of second-order numerical methods based on the Liniger-Willaby method with minimal error of discretization is proposed. Improved time and accuracy in the process of determining the characteristics of quartz.
??????, добавлен 23.10.2020A broadband coherent orthomode converter based on a coaxial four-ribbed waveguide for a frequency band of 3.4-5.4 GHz was developed. Each element of the design was separately optimized with CST Microwave Studio. Final modeling of characteristics.
??????, добавлен 29.09.2016In the study the possibilities of application of known methods for estimating the life to the task of forecasting the ultimate state of radio-electronic means of the surface-to-air missile system during the operation status of the requested technical.
??????, добавлен 21.03.2022Features a mathematical model of wireless mesh-network, which implements the principle of access time to a common radio resources. Allocation of slots and their routing. Analysis of finite delay in terms of the allocation of slots along the route.
??????, добавлен 22.03.2016The role and significance of attenuation by vegetation in remote sensing. The model of vegetation as a continuous medium. Effective dielectric constant of vegetation. Methods of measurements of attenuation. The directions of future research needs.
??????, добавлен 04.11.2018Current methods of modeling ultrasonic sensors. The most frequently used modelling methods are considered to be: modeling by creating equivalent and electrical circuits of varying complexity, which allow calculating the frequency band of the transducer.
??????, добавлен 11.03.2025The implementation of beamforming and spatial diversity in Orthogonal Frequency Division Multiplexing systems. The differences of OFDM transmission over scenarios with different angular spread, which can viewed clearly from the base station antenna (BSA).
??????, добавлен 24.09.2016The path and loss - the dominant feature of the propagation environment. Operating frequency, antenna array size - one of the parameters, that plays a significant influence on overall system performance of the next generation wireless communications.
??????, добавлен 17.03.2022- 68. Plane wave diffraction by two-dimensional gratings of inductive and capacitive coupling elements
Frequency selective structures in the form of two-dimensional gratings with non-resonant elements are investigated. Expressions the main for the reflection and transmission coefficients for the gratings consisting of thin metal rectangles are obtained.
??????, добавлен 04.11.2018 ??????? ??????? ???? ????????? ??????????????? ??’???? ??? ???????? ??????????? ????????? ??????? ? ????????????? ????????? ??????? (OFDM-???????). ????????? ???????????? ??’???? ??? ??????????? ?????? ????????. ?????????? ??????? ?????????? OFDM-???????.
??????, добавлен 23.01.2018Finding a way to build an active eight-band equalizer to adjust the frequency response shape. Characterization of graphic equalizers based on a differential amplifier, signal composition of bandpass filters and an active filter with a feedback circuit.
??????, добавлен 12.05.2024The article is devoted to the researches the accuracy of the measurement of range by the multifrequency phase method. The sources of error of probing signals are identified: instability of frequency probing signal, error of measurement amplitude.
??????, добавлен 27.07.2016Identification of linguistic means of objectifying the latent category of otherness as a parameter of communication. Comprehensive consideration of English and Russian examples of the objectification of otherness as a parameter of communication.
??????, добавлен 26.04.2023Identification of the main means used in online communications for the organization of polite communication. Features of politeness in the little-studied field of Russian-language online communication. Prohibitions on certain forms of speech behavior.
??????, добавлен 11.03.2021The mechanisms for the formation of zones of possible icing of aircraft during the flight are considered. The algorithm of radar detection of such zones, and the conditions for its use. Identification of the threat of icing during an aircraft flight.
??????, добавлен 14.09.2016