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About 10,000 papers for “Phased array”

Phased array

Rachael Nightingale, Henry Knipe, Hamish Smith · Radiopaedia.org · 2017

Cited by 0Open access

PHASED ARRAY CONTROLLER

NASA/Glenn Research Center · Bulletin of Miscellaneous Information (Royal Gardens Kew)

Cited by 0Open access

PHASED ARRAY STUDY.

Defense Technical Information Center (DTIC) · 1963

A ten element phased array using semiconductor diode phase shifters has been designed and tested at S-band. The design has emphasized maximum phase shifter capability for ultimate use in medium and high power phased array radar system applications. A hybrid coupled bit circuit was employed as the basic phase shifting circuit. The phase shifter circuit and diode were optimized to achieve high pulsed power capability with low insertion loss. The optimization procedure has lead to the use of a large junction capacitance diode operating in a low impedance circuit. Phase shifters were tested to a level of 5 kw peak and 200 w. average with no limiting or instabilities occurring. The diode bit insertion loss contribution was 1.3 db. Radiation pattern tests of the assembled antenna array showed side-lobe levels of between 20 and 25 db for most all cases over a beam scan range of = 50 degrees. Phase shifter performance in the antenna array with regard to amplitude and phase errors was such as to produce pattern errors which were 10 to 15 db below the isotropic level. This allows the attainment of low side-lobe levels and a negligible reduction in antenna gain due to aperture errors. The experimental phase module design has lead to a proposed practical package employing the principles of the experimental module. The new design will be developed under a contract with the Navy Bureau of Ships. (Author)

Cited by 0

Phased Array Antennas

Giannakopoulos, Georgios, Shaikh, Khushbu Mehboob · Figshare · 2024

This paper demonstrates and compares the Planar Arrays (2D) and the Conformal Arrays (3D). The 3D surfaces and topography of these applications have allowed for more frequent and high scale design. Analysing conformal antennas are a technology that has been utilized for electromagnetic emitting devices. The architectural considerations and design elements for vehicles and devices have yielded potential communication benefits. The ascent of 3D printing in this space continues the revolutionary technology that will increase electromagnetic communication without any interference. Producing conformal antennas with 3D printing and additive manufacturing technology is possible due to the advantages in signal to noise ratio and power consumption. Potentials and problems are explained in detail.

Cited by 0Open access

ESPAR_DRA phased array

Mohammad Ranjbar Nikkhah, J. Rashed‐Mohassel, Ahmed A. Kishk · 2012

A new dielectric resonator ESPAR antenna phased array was investigated. The array showed ± 30° scanning capabilities. The array was matched for all the scanning directions and achieved a gain better than 8dBi.

Cited by 2

Phased Array Antennas

Giannakopoulos, Georgios, Shaikh, Khushbu Mehboob · Figshare · 2024

This paper demonstrates and compares the Planar Arrays (2D) and the Conformal Arrays (3D). The 3D surfaces and topography of these applications have allowed for more frequent and high scale design. Analysing conformal antennas are a technology that has been utilized for electromagnetic emitting devices. The architectural considerations and design elements for vehicles and devices have yielded potential communication benefits. The ascent of 3D printing in this space continues the revolutionary technology that will increase electromagnetic communication without any interference. Producing conformal antennas with 3D printing and additive manufacturing technology is possible due to the advantages in signal to noise ratio and power consumption. Potentials and problems are explained in detail.

Cited by 0Open access

Phased array antenna

Leyh, Martin, Schühler, Mario, Schlicht, Michael et al. · Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) · 2016

Embodiments provide a phased array antenna comprising a feed structure adapted to guide an electromagnetic wave, a plurality of controllable elements coupled to the feed structure and a plurality of radiating elements, wherein each of the radiating elements is coupled to at least two of the plurality of controllable elements.

Cited by 0Open access

Phased Array Radars

2000

Radar technology developed in 1940 to 1965 was based on the use of antennae providing directional beams incorporating mechanical rotation. Usually, parabolic reflectors were employed to develop directive beam antennae based on the geometrical properties of reflectors. Depending on the requirements, various technologies have been employed, such as parabolic cylinders, paraboloids, offset focus paraboloids, and various types of lenses. One of the difficulties with these antennae has been their threedimensional structure, which is quite large.

Cited by 0

Phased array modules.

Yoichi Ochiai (567224), Takayuki Hoshi (567225), Jun Rekimoto (567226) · Figshare · 2015

<p>(Left) The phased array modules are operated by a computer via USB. (Middle) Each driving circuit board consists of three components; USB I/F, FPGA, and Driver ICs. (Right) Each phased array module has 285 ultrasonic transducers.</p>

Cited by 0Open access

Phased array antennas

Ramadas P. Shenoy · Institution of Engineering and Technology eBooks · 1993

This chapter is a comprehensive treatment of phased arrays, including (1) array theory, analysis and synthesis techniques; (2) the detailed treatment of array elements and mutual coupling effects; and (3) active arrays - architectures, transmitter-receiver (T/R) modules, feed and control, design criteria and low-sidelobe techniques.

Cited by 5

Phased Array Antennas.

A. Hessel, Sandro Barone, B.R. Cheo et al. · Defense Technical Information Center (DTIC) · 1976

The report contains theoretical analysis and computed results for various types of phased arrays. Arrays on the exterior of a conducting sphere and on the interior of a conducting cylinder are treated in the first two chapters. The spiral antenna is dealt with, as an isolated element and in an infinite array, in the next two chapters. The last chapter contains the analysis of ridge waveguide arrays and a study of their wide band performance.

Cited by 0

Phased Array Antennas

Giannakopoulos, Georgios, Shaikh, Khushbu Mehboob · Figshare · 2024

This paper demonstrates and compares the Planar Arrays (2D) and the Conformal Arrays (3D). The 3D surfaces and topography of these applications have allowed for more frequent and high scale design. Analysing conformal antennas are a technology that has been utilized for electromagnetic emitting devices. The architectural considerations and design elements for vehicles and devices have yielded potential communication benefits. The ascent of 3D printing in this space continues the revolutionary technology that will increase electromagnetic communication without any interference. Producing conformal antennas with 3D printing and additive manufacturing technology is possible due to the advantages in signal to noise ratio and power consumption. Potentials and problems are explained in detail.

Cited by 0Open access

Optical Phased Array

Shaddock, Daniel Anthony · ANU Open Research (Australian National University) · 2019

Cited by 0

Phased array calibration

R. Sorace · IEEE Transactions on Antennas and Propagation · 2001

Calibration of a phased array antenna while the antenna is in service can be a complex and time-consuming procedure that affects use of the antenna and imposes an unacceptable overhead on the system. The procedure described herein uses a maximum likelihood algorithm to minimize the number of measurements, thus reducing the impact on the system and shifting the overhead to a remote site.

Cited by 118