Antenna array

Part 1 book "Low visibility antennas for communication systems" includes content: Electromagnetic theory and transmission lines, basic antenna theory, low visibility printed antennas, antenna array.

123p dianmotminh03 17-06-2024 0 0   Download

Ebook "Massive MIMO meets small cell: Backhaul and cooperation" explores the utilization of large antenna arrays in massive multiple-input-multiple-output (MIMO) for both interference suppression, where it can improve cell-edge user rates, and for wireless backhaul in small cell networks, where macro base stations can forward data to small access points in an energy efficient way.

69p tachieuhoa 28-01-2024 6 2   Download

Part 1 of ebook "Active radar cross section reduction: Theory and applications" provides readers with contents including: introduction to radar cross section reduction; RAM analysis for low-observable platforms; radar cross section of phased antenna arrays;...

155p tieulangtran 28-09-2023 5 3   Download

Part 1 of ebook "Antenna engineering handbook" provides readers with contents including: introduction and fundamentals; fundamentals of antennas; arrays of discrete elements; types and design methods; dipoles and monopoles; microstrip antennas; slot-antenna arrays; leaky-wave antennas; long-wire antennas; surface-wave antennas; frequency-independent antennas;...

829p tieulangtran 28-09-2023 7 2   Download

Continued part 1, part 2 of ebook "Basic radar analysis" provides readers with contents including: stretch processing; phased array antenna basics; signal processor analyses; radar receiver basics; introduction to synthetic aperture radar signal processing; introduction to space-time adaptive processing; sidelobe cancellation; advances in radar;...

427p tieulangtran 28-09-2023 4 3   Download

Continued part 1, part 2 of ebook "Introduction to radar systems" provides readers with contents including: radar antennas; the electronicaljy steered phased array antenna in radar; receivers, displays, and duplexers; detection or radar signals in noise; extraction of information and waveform design;...

359p tieulangtran 28-09-2023 5 3   Download

In this paper, the Long-short term memory network model is used to estimate the direction of incoming signals for the Uniform Circular Antenna array. The performance of this method is evaluated based on the RMSE parameter and compared with the MUSIC algorithm in different cases such as the deviation of incident angle of radiation sources, and signal-to-noise ratio...

7p viannee 04-08-2023 7 4   Download

In this paper, we present a configuration of a wideband MIMO antenna array for 5G terminals. The single-element antenna has compact size, dual polarization, wide operating bandwidth covering the 5G N78 frequency band, and high isolation between the two input ports (>40 dB).

8p viwhitewolf 11-07-2023 4 4   Download

This paper proposes an efficient beamformer based on the binary bat algorithm for uniform rectangular arrays of half-wavelength dipoles. The proposed beamformer utilizes the technique of controlling only the amplitude of excitation weights to produce optimal patterns with minimal distortions in sidelobe regions while maintaining the main beam and imposing nulls in the directions of interfering signals.

5p vifalcon 18-05-2023 8 4   Download

To achieve effective power delivery in space, this paper proposes an efficient beamformer that can focus energy on the direction of the desired people and minimize energy in the direction of undesired people (interferences).

6p vifalcon 16-05-2023 3 2   Download

Lecture Convex optimization - Chapter: Convex optimization examples. This chapter presents the following content: Multi-period processor speed scheduling, minimum time optimal control, grasp force optimization, optimal broadcast transmitter power allocation, phased-array antenna beamforming, optimal receiver location.

24p runthenight09 16-05-2023 3 3   Download

This paper introduces a novel high gain and wideband antenna array at 5 GHz for outdoor applications. The proposed array consists of a 2×9 elements planar array and a reflector. This antenna has a gain peak of 15.7 dBi and a bandwidth of 2 GHz from 4.0 GHz to 6.0 GHz.

6p videadpool 05-05-2023 7 3   Download

This paper proposes a lefthanded circularly polarized (LHCP) 2×4 array antenna using sequential phase rotation power dividers at 5.8 GHz band. The element antenna is a square patch antenna with a slit in the middle for better impedance matching, six trapezoidal parasitic patches added to either side of the main patch to create resonance at high frequencies, and a metasurface placed on top of the main patch.

11p viargus 20-02-2023 4 3   Download

The possibility of using Latin squares for constructing two-dimensional nonequidistant antenna arrays that can be used for development of radio telescopes and systems for remote sensing of atmospheric and lithospheric radiation has been shown. An algorithm for calculating the coordinates of elements of a non-equidistant antenna array using the values of elements of Latin squares is proposed.

7p vipagani 24-10-2022 5 3   Download

The paper proposed an antenna array consisting of four bow-shaped dipole elements. The antenna array operates at a center frequency of 5 GHz with a bandwidth of 332 MHz. By utilizing the reflector and the directors, the antenna obtains a high gain of 10.6 dBi at 5 GHz and over 10.3 dBi across the operating bandwidth.

7p viarrinera 26-08-2022 6 4   Download

Massive multiple-input multiple-output (m-MIMO) is used to improve the robustness of data transmission and high sum spectral efficiency in 5G systems. For 5G New Radio (NR) systems need to be designed to reduce cost and complexity, most notably hybrid analog-digital beamforming with large-scale antenna array which has become a major research target.

8p vimelindagates 18-07-2022 16 4   Download

In this paper, with the simulated signal data set obtained at the linear antenna array (ULA), the Long Short-Term Memory (LSTM) network model is used to estimate the DOA. The performance of the method is evaluated based on the RMSE parameter and compared with MUSIC, DNN algorithms in different cases such as: deviation of incident angle of radiation sources, signal-to-noise ratio (SNR).

6p vigeneralmotors 13-07-2022 15 7   Download

In this paper, a feeding network based on Bat algorithm for pattern-nulling of a linear antenna array will be proposed. Bat algorithm has been used for calculating the amplitude of input weights for a uniform linear antenna array (ULA array) to place a wide null at a pre-defined position. A new feeding network structure to implement the excitation weights for a 12x1 ULA array will be proposed, designed and simulated.

4p wangziyi_1307 26-04-2022 12 1   Download

In this paper, we propose an adaptive beamformer based on a binary bat algorithm (BBA) for pattern nulling of uniformly linear array (ULA) antennas. The optimized array pattern is obtained by controlling the phase of each array excitation weight.

6p viericschmid 12-01-2022 19 2   Download

The paper presents several integrated high frequency antenna prototypes based on Silicon (Si) CMOS and on-glass technologies for millimeter-wave (mm-wave) applications. An on-chip loop antenna and dipole radiator are presented. In addition, a wide-band dipole-patch antenna design for the range of 74 – 104 GHz is integrated into a CMOS chip with an on-chip pulse generator. In addition, an implementation of a fully on-Silicon antenna array integrated with a timed-array transmitter is introduced.

8p spiritedaway36 28-11-2021 7 3   Download