Results 1 to 10 of about 181,132 (305)
, 1986 Attention is called to the grid array as a possible useful antenna design for UHF clear air radars. This type of antenna integrates radiating elements and the feed network into a single structure so that a fairly large array can be driven from a single ...
Ecklund, W. L.
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Ka-band feed arrays for spacecraft reflector antennas with limited scan capability: An overview [PDF]
, 1992 JPL and NASA are in the process of developing ground and spacecraft antenna systems at Ka-band frequencies for future deep space applications. The use of Ka-band (32-GHz down) communication will result in smaller ground and spacecraft antennas and ...
Jamnejad, V.
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Active beamforming network design [PDF]
, 2008 This paper describe the design and implementation of multi beam antenna array using active beam forming network for wireless local area networks (WLAN) operating at 2.4 GHz band frequency.
A. Rahim, Mohamad Kamal +2 more
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Stochastic framework for evaluating the effect of displaced antenna elements on DOA estimation [PDF]
, 2017 We establish a statistical framework for investigating the influence of correlated random displacements of antenna elements in a uniform circular antenna array (UCA) on the distribution of direction-of-arrival (DOA) estimates. More specifically, we apply
Bruneel, Herwig +5 more
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A Miniaturized Base Station Antenna With Novel Phase Shifter for 3G/LTE Applications
IEEE Access, 2018 This paper presents a new type of miniaturized base station antenna array, which consists of a metal reflector, six upper-band dipoles, and a couple of ladder sidewalls, operating over 1.71-2.69 GHz (DCS/PCS/UMTS/LTE). Meanwhile, this paper also proposes
Yejun He +5 more
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OAM mode purity improvement based on antenna array
Digital Communications and NetworksOrbital Angular Momentum (OAM) waves are characterized by helical wave fronts and orthogonality between different modes. Therefore, OAM waves have huge potential in improving wireless communications' channel capacity and radar imaging's resolution ...
Dandan Liu +3 more
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A phased array tracking antenna for vehicles [PDF]
An antenna system including antenna elements and a satellite tracking method is considered a key technology in implementing land mobile satellite communications.
Mano, Kazukiko +4 more
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Phased array antenna control [PDF]
, 1978 Several new and useful improvements in steering and control of phased array antennas having a small number of elements, typically on the order of 5 to 17 elements are provided.
Doland, G. D.
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Review of specific antenna configurations: An estimate of cost and performance versus frequency for a simple (10 Lambda)-2 clear-air radar antenna array [PDF]
, 1983 The building of operational clear air radar wind profilers is discussed. The choice of operating frequency and antenna configuration for these profilers is examined.
Ecklund, W. L.
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Quasi-optical antenna-mixer-array design for terahertz frequencies [PDF]
A new quasi-optical antenna-mixer-array design for terahertz frequencies is presented. In the design, antenna and mixer are combined into an entity, based on the technology in which millimeter-wave horn antenna arrays have been fabricated in silicon ...
Guo, Yong +2 more
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