Results 151 to 160 of about 1,829,302 (216)
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IEEE Transactions on Antennas and Propagation, 2019
This paper proposed a wideband, efficient, and high gain circularly polarized (CP) array antenna based on the gap waveguide technology for 30 GHz frequency band applications. The antenna subarray is a $2 \times 2$ slot groove gap waveguide-based cavity-
M. Akbari, A. Farahbakhsh, A. Sebak
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This paper proposed a wideband, efficient, and high gain circularly polarized (CP) array antenna based on the gap waveguide technology for 30 GHz frequency band applications. The antenna subarray is a $2 \times 2$ slot groove gap waveguide-based cavity-
M. Akbari, A. Farahbakhsh, A. Sebak
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2019
In this communication, a corporate stacked microstrip and substrate integrated waveguide (SIW) feeding structure is reported to be used to broaden the impedance bandwidth of a $4 \times 4$ patch array antenna.
Junfeng Xu, W. Hong, Z. Jiang, Hui Zhang
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In this communication, a corporate stacked microstrip and substrate integrated waveguide (SIW) feeding structure is reported to be used to broaden the impedance bandwidth of a $4 \times 4$ patch array antenna.
Junfeng Xu, W. Hong, Z. Jiang, Hui Zhang
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Digest on Antennas and Propagation Society International Symposium, 2003
A multibeam antenna prototype for an ESM system is presented. The antenna is formed by a semicircular array of Vivaldi radiating elements, fed by an RKR microstrip lens. Both the lens and the array are printed on the same dielectric substrate. The antenna operates over one octave frequency band.
M. Sierra +3 more
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A multibeam antenna prototype for an ESM system is presented. The antenna is formed by a semicircular array of Vivaldi radiating elements, fed by an RKR microstrip lens. Both the lens and the array are printed on the same dielectric substrate. The antenna operates over one octave frequency band.
M. Sierra +3 more
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Power Gain Optimization Method for Wide-Beam Array Antenna via Convex Optimization
IEEE Transactions on Antennas and Propagation, 2019This paper focuses on the problem of maximizing the minimum power gain in a wide main lobe for an array antenna. To obtain the desired power gain pattern, current literatures solve the problem known as shaped beam pattern synthesis (SBPS) by setting the ...
Shiwen Lei +5 more
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IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002
A grid array antenna is a radiation element of linear polarization. The feed point is located at the left or right edge of the antenna structure. As the frequency changes, the beam direction varies due to the phase change in the current along the grid cells.
H. Nakano, T. Kawano
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A grid array antenna is a radiation element of linear polarization. The feed point is located at the left or right edge of the antenna structure. As the frequency changes, the beam direction varies due to the phase change in the current along the grid cells.
H. Nakano, T. Kawano
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IEEE Transactions on Antennas and Propagation, 2019
A sidelobe-reduced, four-beam array antenna fed by a modified $4 \times 4$ Butler matrix (BM) is proposed for 5G applications. Two attenuators are utilized in two external channels of the BM to realize a tapered amplitude distribution.
S. Trinh-Van +4 more
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A sidelobe-reduced, four-beam array antenna fed by a modified $4 \times 4$ Butler matrix (BM) is proposed for 5G applications. Two attenuators are utilized in two external channels of the BM to realize a tapered amplitude distribution.
S. Trinh-Van +4 more
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Studies of thermal deformation and shape control of a space planar phased array antenna
Aerospace Science and Technology, 2019Large planar phased array antenna in space will inevitably occur deformation due to the space thermal environment, which could severely influence the pointing accuracy of the antenna. This paper focuses on the studies of thermal load and shape adjustment
Guang-Yu Lu +5 more
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RCS Reduction of Patch Array Antenna Using Anisotropic Resistive Metasurface
IEEE Antennas and Wireless Propagation Letters, 2019A resistive metasurface (RM) with anisotropic absorption/transmission performances is developed and applied in the radar cross section (RCS) reduction of a patch array antenna.
Qiang Chen +4 more
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IEEE Transactions on Antennas and Propagation, 1982
Many millimeter and far-infrared imaging systems are limited in sensitivity and speed because they depend on a single scanned element. Because of recent advances in planar detectors such as Schottky diodes, superconducting tunnel junctions, and micro-boiometers, an attractive approach to this problem is a planar antenna array with integrated detectors.
D. Rutledge, M. Muha
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Many millimeter and far-infrared imaging systems are limited in sensitivity and speed because they depend on a single scanned element. Because of recent advances in planar detectors such as Schottky diodes, superconducting tunnel junctions, and micro-boiometers, an attractive approach to this problem is a planar antenna array with integrated detectors.
D. Rutledge, M. Muha
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A Sidelobe Level Reduction Method for mm-Wave Substrate Integrated Waveguide Slot Array Antenna
IEEE Antennas and Wireless Propagation Letters, 2019A new method of sidelobe level (SLL) reduction for a substrate integrated waveguide (SIW) slot array antenna is presented. In this method, amplitude distribution is assigned to the slots by tapering the SIW width.
A. Dewantari +3 more
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