Results 271 to 280 of about 13,985 (315)

Broadband stacked printed antennas

2004 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference, 2004
Microstrip patch antennas have the attractive features of low profile and light weight, and can be made conformal to mounting structures. The conventional patch antennas suffer from the narrow bandwidth. To overcome this problem, a two layer electromagnetically coupled rectangular patch antenna is considered in this paper.
S. M. El-Halafawy, Y. M. M. Antar
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Novel broadband omnidirectional antennas

2012 Asia Pacific Microwave Conference Proceedings, 2012
Three types of novel broadband omnidirectional antennas are developed, including a circularly polarized antenna, a horizontally polarized antenna and a 45° linearly polarized antenna. All of these antennas have a bandwidth of about 30% with good omnidirectional radiation patterns.
Xulin Quan, Ronglin Li
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Broadband Microstrip Antennas

2009
Microstrip antennas are inherently narrowband. The typical bandwidth of a microstrip antenna is around 4% to 7%. A considerable number of experimental approaches have been undertaken to develop microstrip antennas that have a broader impedance bandwidth than a single microstrip element achieves without external matching.
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A broadband planar antenna

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, null Zhi Ning Chen, null Xianming Qing   +2 more
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Broadband traveling wave antennas

IRE International Convention Record, 2005
The large class of travelling wave antennas includes many examples which are superficially quite different, such as the helical antenna, the dielectric antenna, the corrugated surface, and the long Yagi antenna. The essential similarity of these antennas is discussed, and it is shown that the pattern bandwidth is inherently large, and separable from ...
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Broadband Horn Antenna Calculation

2007 17th International Crimean Conference - Microwave & Telecommunication Technology, 2007
Design procedure for calculation of broadband horn antenna has been developed on the basis of electromagnetic field equations solution.
V. F. Manoylov, V. V. Pavlyuk
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Broadband printed monopole antenna

2006 IEEE Antennas and Propagation Society International Symposium, 2006
A novel broadband printed monopole fed by microstrip line is proposed. The antenna operates over wide frequency band (from 2.4 to 6.8 GHz) with impedance close to 50 /spl Omega/ and ...
null Li Jian-Ying, null Tan Peng-Khiang, null Gan Yeow-Beng   +2 more
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Broadband omnidirectional helmet antennas

2006 IEEE Antennas and Propagation Society International Symposium, 2006
In this paper a new class of helmet antennas with omnidirectional pattern has been developed. Its radiation performance is considerably superior to that of conventional resonant whip antennas for terrestrial field applications over a much wider bandwidth and with more stable connectivity regardless of the wearer's body movement and orientation.
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Developments in broadband antennas

IEEE Spectrum, 1964
A survey is presented for the purpose of providing the nonspecialist with a basic understanding of the remarkable advances that have taken place over the past decade in the field of broadband ...
E. C. Jordan, G. A. Deschamps, J. D. Dyson, P. E. Mayes   +3 more
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Broadband slotted cone antenna

IEEE Transactions on Antennas and Propagation, 1966
A new UHF-VHF antenna has been designed that is electrically small and exhibits multioctave bandwidth properties. This electrical hybrid design features ruggedness, light weight, compactness, and low profile. Experimental results indicate that the Slotted Cone Antenna radiates primarily vertical polarization and, like the monopole, exhibits an ...
R. Wanselow, D. Milligan
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