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The Planar Parabolic Optical Antenna
Nano Letters, 2012One of the simplest and most common structures used for directing light in macroscale applications is the parabolic reflector. Parabolic reflectors are ubiquitous in many technologies, from satellite dishes to hand-held flashlights. Today, there is a growing interest in the use of ultracompact metallic structures for manipulating light on the ...
David T, Schoen +4 more
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The planar lateral wave antenna
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012A novel planar lateral wave antenna concept that promises impedance matching over factor a one to three bandwidth, very high efficiency, and high directivity in one plane in presented. The structure realizes a planar elliptical dielectric lens antenna for focusing the beams in the H-plane.
Türker Tokan, Nurhan +2 more
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Spiral Planar Antenna for MIMO
2018 IEEE 7th Global Conference on Consumer Electronics (GCCE), 2018A high gain spiral planar antenna for the multiple-input and multiple-output (MIMO) is proposed and fabricated in the frequency band of 2.4GHz. Its maximum and average gains are higher than those of the commercialized antenna. Two fabricated antennas are put adjacent to the same and reverse direction, and MIMO antennas are composed.
Reito Arasawa +4 more
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Planar reconfigurable antennas
2006 First European Conference on Antennas and Propagation, 2006In this paper it is shown that planar reconfigurable antennas can cover a wide range of designs such as fractal antennas, triangular antennas, monopole, dipoles, log-periodic etc. Some of these designs can also be used to yield tunable electrically small antennas for miniature wireless device applications.
Christos G. Christodoulou +3 more
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2008 IEEE Antennas and Propagation Society International Symposium, 2008
A broadband planar antenna with stable radiation patterns is presented. It consists of a suspended radiator fed by a vertical feed through an n-shaped microstrip. The measured impedance bandwidth is 3.1-5.1 GHz for a return loss of |S11| < -10 dB, and an average gain of 7.7 dBi is achieved. There is no beam squinting across the operating frequency band.
null Wee Kian Toh +2 more
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A broadband planar antenna with stable radiation patterns is presented. It consists of a suspended radiator fed by a vertical feed through an n-shaped microstrip. The measured impedance bandwidth is 3.1-5.1 GHz for a return loss of |S11| < -10 dB, and an average gain of 7.7 dBi is achieved. There is no beam squinting across the operating frequency band.
null Wee Kian Toh +2 more
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International Symposium on Antennas and Propagation Society, Merging Technologies for the 90's, 1990
The architecture of a new type of L-band multiple-beam antenna (ALE 3*5) for air traffic control (ATC) is presented. The electrical performance makes it equivalent to an antenna with very sharp horizon cutoff, large coverage angles, and high gain. The design requirements are as follows: frequency band of 1.25-1.35 GHz: a modular architecture with few ...
A. Cucci, A. Tomassoni, F. Madia
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The architecture of a new type of L-band multiple-beam antenna (ALE 3*5) for air traffic control (ATC) is presented. The electrical performance makes it equivalent to an antenna with very sharp horizon cutoff, large coverage angles, and high gain. The design requirements are as follows: frequency band of 1.25-1.35 GHz: a modular architecture with few ...
A. Cucci, A. Tomassoni, F. Madia
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Directivity of planar antennas
IEEE Antennas and Propagation Magazine, 1999Starting with a common formula for directivity, given beamwidths, the author gives the modifications needed to improve the accuracy when the distribution is known. Also included is a nomograph that shows the parameters of the Taylor single-parameter distribution, and allows trade studies versus the sidelobe level.
V. Schejbal, J.D. Mahoney, N. McDonald
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A Planar, Differential, and Directive Ultrawideband Antenna
IEEE Transactions on Antennas and Propagation, 2010A novel planar differential ultrawideband antenna is described and both numerically and experimentally characterized. The proposed antenna is formed by two disc monopoles fed by 50-Ohm microstrip lines with a structured ground plane. Simulations and measurements demonstrate that it is possible to achieve a huge increase in directionality with respect ...
LOCATELLI, Andrea +6 more
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