Results 271 to 280 of about 17,964 (305)
Some of the next articles are maybe not open access.
Ultra-wideband planar spiral antenna
2011 MICROWAVES, RADAR AND REMOTE SENSING SYMPOSIUM, 2011The original ultra-wideband impedance transformer providing the required electromagnetic matching of the coaxial cable with the dual-arm spiral antenna is proposed. The calculated input reflection coefficient of the spiral antenna with transformer is less than −10dB within the frequency band from 10GHz to 110GHz.
I. Ivanchenko, V. Pishchikov, N. Popenko
openaire +1 more source
1992 Symposium on Antenna Technology and Applied Electromagnetics, 1992
An array consisting of four-by-four spiral antennas is constructed using the pair-element (PE) technique. The 3-dB axial ratio bandwidth is improved to 8.9% by the PE technique from 3.8% for an array without using the PE technique. The −14-dB return loss bandwidth is widened to 6.4% from 3.6%.
H. Nakano +4 more
openaire +1 more source
An array consisting of four-by-four spiral antennas is constructed using the pair-element (PE) technique. The 3-dB axial ratio bandwidth is improved to 8.9% by the PE technique from 3.8% for an array without using the PE technique. The −14-dB return loss bandwidth is widened to 6.4% from 3.6%.
H. Nakano +4 more
openaire +1 more source
2023 IEEE Wireless Antenna and Microwave Symposium (WAMS), 2023
G. Vaishnavi +3 more
openaire +1 more source
G. Vaishnavi +3 more
openaire +1 more source
Single Wire Archimedian Spiral Antenna
IETE Journal of Research, 1969The construction of a single wire unbalanced Archimedian spiral antenna is described. The experimentally observed characteristics of the antenna indicate that the antenna has a pattern and impedance bandwidth of approximately 1–5. The axial ratio of the radiation along the axis is constant (approximately 2 or less) over a frequency band of 1–2.
openaire +1 more source
1987 Antennas and Propagation Society International Symposium, 2005
H. Nakano, Y. Minegishi, J. Yamauchi
openaire +1 more source
H. Nakano, Y. Minegishi, J. Yamauchi
openaire +1 more source
1980 Antennas and Propagation Society International Symposium, 1980
H. Nakano, J. Yamauchi
openaire +1 more source
H. Nakano, J. Yamauchi
openaire +1 more source
1979 Antennas and Propagation Society International Symposium, 2005
A. Van de Capelle +4 more
openaire +1 more source
A. Van de Capelle +4 more
openaire +1 more source
Electrical tuning of phase-change antennas and metasurfaces
Nature Nanotechnology, 2021Kye L Okabe +2 more
exaly
A Vision and Framework for the High Altitude Platform Station (HAPS) Networks of the Future
IEEE Communications Surveys and Tutorials, 2021Gunes Karabulut Kurt +2 more
exaly