Phased array

About: Phased array is a research topic. Over the lifetime, 19428 publications have been published within this topic receiving 229231 citations. The topic is also known as: Phased Array Radar, PAR.

An Eight-Element 370–410-GHz Phased-Array Transmitter in 45-nm CMOS SOI With Peak EIRP of 8–8.5 dBm

Abstract: This paper presents a 370–410-GHz phased-array transmitter, which is based on a $W$ -band distribution network, amplifiers, and vector modulators, feeding a linear eight-element quadrupler array. The quadrupler outputs are connected to high-efficiency microstrip antennas. The design is scalable to a large number of elements, since most of the chip operates at $W$ -band frequencies. The chip is built using 45-nm CMOS silicon on insulator technology, which offers transistors with $f_{t}$ and $f_{\max }$ of 250–260 GHz referenced to the top metal. The phased array results an equivalent isotropic radiated power (EIRP) of >5 dBm at 375–405 dBm with a peak EIRP of 7–8.5 dBm at 380–400 GHz and with a pattern scan of +/−35° in one plane. To the best of our knowledge, this is one of the first demonstrations of a phased array operating at 400 GHz using CMOS technology and with wide operating bandwidth.

Piezoelectric-paint-based two-dimensional phased sensor arrays for structural health monitoring of thin panels

Abstract: A damage detection method based on an innovative 2D phased sensor array made of piezoelectric paint is proposed for in situ damage detection of a thin isotropic panel using guided Lamb waves A design analysis of candidate 2D arrays based on spiral, cruciform and circular element layouts is performed In this study, a 2D phased sensor array with a spiral configuration is fabricated using a piezoelectric composite (piezopaint) patch and used for detecting damages in an aluminum panel Steered array responses are generated from the raw sensor signals using a directional filtering algorithm based on phased array signal processing The fundamental flexural (or transverse), A0 mode, of the guided Lamb waves is used though the sensing and analysis technique is not limited to the mode used in this work To enhance the proposed analysis technique, empirical mode decomposition (EMD) and a Hilbert–Huang transform (HHT) are applied A new damage detection algorithm including threshold setting and damage index (DI) calculation is developed and implemented for detecting damages in the form of holes and a simulated crack The characteristic damage indices consistently increase as damage size grows

An innovative computational approach based on a particle swarm strategy for adaptive phased-arrays control

Abstract: In this paper a new approach to the control of phased arrays is presented and assessed. Starting from the adaptive array theory, a particle swarm strategy is used to tune the phase coefficients of the array in order to adaptively minimize/avoid the effects of interfering signals at the receiver. To show the effectiveness of the proposed approach, a selected set of numerical examples, concerned with linear as well as planar arrays, is presented. Furthermore, to evaluate the advantages of the particle swarm optimizer (PSO)-based strategy over state-of-art methods, a comparative study is carried out by analyzing the performance of the method in terms of both the signal-to-interference-plus-noise-ratio and resulting beam pattern. The achieved results, even though preliminary, seem to confirm that the PSO-based approach satisfactorily works and it generally outperforms previously proposed/state-of-art phase-only adaptive control strategies

Compact light weight UHF arrays using long slot apertures

Abstract: A wideband low profile phased array using long slot aperture was recently developed for radar and EW applications. A prototype UHF array with 4 x 8 (32) elements (1.12 m × 2.24 m × 23 cm) was built and tested for 150–600 MHz operation. Array patterns, gain, and cross-pol level were measured. Excellent performance was observed. The array is 23 cm thick, and it weighs 7 kg (2.8 kg/m 2 ). Lossy loading material may be used to make it thinner, but this is believed to be the lightest and thinnest UHF array reported for wideband applications without gain penalty.

A multilayer organic package with 64 dual-polarized antennas for 28GHz 5G communication

Abstract: An organic-based multi-layered phased-array antenna package for a 28GHz 5G radio access applications is hereby introduced. The package incorporates 64 dual-polarized antenna elements and features an air cavity common to all antennas. Direct antenna probing measurements of the package show over 3GHz bandwidth and 3dBi gain at 28GHz. A phased array transceiver module has been developed with the package and four SiGe BiCMOS ICs are attached using flip-chip assembly. Module-level measurements in TX mode show 54dBm EIRP and near-ideal 35dB gain increase for 64-element power combining. 64-element radiation pattern measurements are reported with a steering range of > ±40 degrees without tapering in off-boresight direction.