Results 21 to 30 of about 18,440 (296)
Satellite Swarm-Based Antenna Arrays for 6G Direct-to-Cell Connectivity
IEEE Access, 2023 Direct connectivity in L/S frequency bands between satellites and common mobile terrestrial user equipment (UE), such as smartphones, is an essential feature for future 6G non-terrestrial networks.
Diego Tuzi +2 more
doaj +1 more source
PROSPECTS FOR THE DEVELOPMENT OF PHASED ANTENNA ARRAYS
Вестник Дагестанского государственного технического университета: Технические науки, 2016 This article describes the main achievements in the development of phased antenna arrays (par) in the past decade. Provides an overview of the most famous systems based on the PAR and PAR based on MMIC technology - PAR in radar stations, PAR to control ...
A. P. Dzuba
doaj +1 more source
A 24-GHz SiGe Phased-Array Receiver—LO Phase-Shifting Approach [PDF]
, 2005 A local-oscillator phase-shifting approach is introduced to implement a fully integrated 24-GHz phased-array receiver using an SiGe technology. Sixteen phases of the local oscillator are generated in one oscillator core, resulting in a raw beam-forming ...
Guan, Xiang +3 more
core +1 more source
Integrated circular optical phased array [PDF]
EPJ Web of Conferences, 2021 Existing OPAs are typically based on 2D rectangular arrays or 1D linear arrays. Both approaches present a limited field-of-view (FOV) due to the presence of the grating lobes when the element spacing is larger than λ/2.
Liu Qiankun +5 more
doaj +1 more source
Adaptive Real Time Imaging Synthesis Telescopes [PDF]
, 2012 The digital revolution is transforming astronomy from a data-starved to a data-submerged science. Instruments such as the Atacama Large Millimeter Array (ALMA), the Large Synoptic Survey Telescope (LSST), and the Square Kilometer Array (SKA) will measure
Wright, Melvyn
core +2 more sources
Geometric Phase in Phasing of Antenna Arrays [PDF]
Symposium - International Astronomical Union, 2002 The response of a pair of differently polarized antennas is determined by their polarization states and a phase between them which has a geometric part which becomes discontinuous at singular points in the parameter space. Some consequences are described.
openaire +2 more sources
Phased Antenna Array Implementation with USRP [PDF]
2017 IEEE Globecom Workshops (GC Wkshps), 2017 This paper presents the implementation of a phased antenna array with Universal Software Radio Peripheral (USRP). The antenna elements of the array are driven by individual USRP platforms. Hence, the synchronization and calibration of different platforms are required in phase and amplitude.
Sonkki Marko Tapani +2 more
openaire +2 more sources
DIRECTIVITY OF ANTENNA ARRAYS [PDF]
Radio Physics and Radio Astronomy, 2016 Purpose: Theoretical investigation of directive gains of linear and planar antenna arrays depending on the distance between radiators and wavelength.
A. A. Bulgakovа +3 more
doaj +1 more source
Power-Based Direction-of-Arrival Estimation Using a Single Multi-Mode Antenna
, 2017 Phased antenna arrays are widely used for direction-of-arrival (DoA) estimation. For low-cost applications, signal power or received signal strength indicator (RSSI) based approaches can be an alternative. However, they usually require multiple antennas,
Dammann, Armin +3 more
core +1 more source
Beamforming Techniques for Large-N Aperture Arrays
, 2010 Beamforming is central to the processing function of all phased arrays and becomes particularly challenging with a large number of antenna element (e.g. >100,000).
Adami, K Zarb +4 more
core +1 more source