Multi-band planar antennas, a comparative study
Characteristics of different flat multi-band antennas, their purpose, features of the production, and measurement. Description of antenna parameters, their advantages and disadvantages. The results of the modal and full-wave analysis of antennas.
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.
учебное пособие, добавлен 25.11.2013A basic overview of the theory of planar antenna near-field measurements. Determination of far-field pattern from a near-field measurement. Advantages of this technique compared to far-field antenna measurement. Brief history of near-field scanning.
научная работа, добавлен 03.04.2012Radar Range Equation and Cross Section. Circular Polarization Components. Vector Effective Height. Mutual Coupling Between Antennas. Radiation Structures and Numerical Methods. Aperture Distributions and Array Synthesis. Dipoles, Slots and Loops.
книга, добавлен 25.11.2013Finding 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.
статья, добавлен 12.05.2024- 5. Smart antenna application for satellite communication systems with space division multiple access
Two different beamforming approaches in space division multiple access for mobile satellite communications: switched-beam antennas and adaptive array antenna systems are considered. The hardware implementation of adaptive algorithm is considered as well.
статья, добавлен 04.11.2018 A 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.
статья, добавлен 29.09.2016A numerical method based on the Fourier Transform Method applications for the study of the optical waves propagating in dielectric planar waveguides. Research waveguide search wavelengths of light according to the received propagation constants.
статья, добавлен 30.07.2016Physics principles of a new type of microwave input amplifiers. Low noise level, broad band, switchable gain, super high self-protection against microwave overloads, rapid recovery and small DC consumption of a cyclotron wave electrostatic amplifier.
статья, добавлен 04.11.2018Dielectric waveguide applications. An electrodynamic problem for band pass filter on the base of coupled dielectric waveguides. Reducing a problem to an integral equation. Development of microwave components on the base of dielectric waveguides.
статья, добавлен 04.11.2018Examinations of the pulses envelopes scattered on several micror-esonator band-stop filters in optical transmission line. The possibilities of pulses time manipulation with various carrier frequencies. Approaches to indistinguishable pulses separation.
статья, добавлен 29.01.2017Interconnection between language and mentality. Exploring the concept of values. The image of Russian people in foreign cross-cultural studies. Measuring Russian Culture using Hofstede’s Dimensions. Comparison results of the survey of the present study.
дипломная работа, добавлен 10.08.2020The antenna elements are arranged along a circle arc and an ellipse arc. The expressions for the equivalent aperture of the antenna array. The values of the amplitude to excite the antenna elements on the basis of the genetic algorithm are obtained.
статья, добавлен 24.06.2016The 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.
статья, добавлен 17.03.2022Advances in electronic and optoelectronic terahertz devices. Rain attenuation as one of the most serious obstacles to overcome for imaging and sensing systems to detect hazardous things using a terahertz waves above 300 GHz because of its masking action.
научная работа, добавлен 26.06.2012The 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.
статья, добавлен 27.07.2016A novel RLS beamforming algorithm with low complexity and high accuracy for applying in mobile communications smart antenna array processor is presented. Determination of the speed of the proposed conveyor architecture compared with the usual structure.
статья, добавлен 04.11.2018Analysis of the distribution of the electric field within the space bounded by the annular border on the basis of the theory of singular integral equations in problem of pairing. Formulas for determination of the electric field in the active zone.
статья, добавлен 29.07.2016Принципиальная схема любительского трансвертера, работающего в диапазоне 50 МГц, имеющего высокие характеристики при использовании с КВ трансивером. Порядок настройки трансвертера, проверка правильности монтажа, установка частоты кварцевого генератора.
реферат, добавлен 19.02.2019Are given the method of determination of angular parameters, which is used in micromechanical inertial-satellite systems, constructed by the method of compensation or based on the reduced Kalman filter. Measurement errors of angles are investigated.
статья, добавлен 22.12.2016Анализ преимуществ фитнес-браслетов в сравнении с телефонами. Время автономной работы у фитнес-браслетов. Основные функции этих устройств: подсчет шагов, скорости передвижения, сожженных калорий и ударов пульса. Xiaomi Мi Band - браслеты трех поколений.
статья, добавлен 19.02.2019Discussion of traffic and determining the load transport system. Investigation of the general operation of the network and telephone service. Daily measurement methods and normal and high load traffic intensities. Using statistical analysis and modeling.
статья, добавлен 21.01.2014Analysis of systems for monitoring the parameters of the telecommunication network with increased information content of the point measurements. Designing the structure of the upgraded monitoring system for the stationary and mobile measurement devices.
статья, добавлен 27.07.2016Investigated improving the main characteristics and parameters of the nano devices in case of microprocessors and memory devices. Held extrapolation forecasts improve the parameters nanocircuits. Analyzed the growth of the market of flash memory.
статья, добавлен 26.06.2016The 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.
статья, добавлен 04.11.2018Tools of the trade. Ideas about electricity. Farad as the capacitance value. ICs, oscillators and filters. The aircuit of the astable multi-vibrator circuit. Diods as the simplest component in the range of devices. Voila as a diode characteristic curve.
учебное пособие, добавлен 25.11.2013