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Broadband Active Microstrip Antennas
21st European Microwave Conference, 1991, 1991The concept of combining active devices with radiating elements for broadband active antenna design was proposed. An active microstrip transmit antenna was realized by using two sided structure and single-ended one-stage amplifier configuration. A 24 percent bandwidth, which is about 6 time that of the passive patch, was achieved both in terms of ...
H. An, B. Nauwelaers, A. Van de Capelle
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Broadband microstrip array antenna
1980 Antennas and Propagation Society International Symposium, 1980A broadband (13%) microstrip array antenna with high efficiency, low cost and low weight has been designed and evaluated. The antenna is foam supported and is about 0.15 \lambda thick. The feeding is accomplished by a separate microstrip network. This antenna is compared with two dielectric loaded microstrip antennas, one with a separate stripline feed
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Broadband printed monopole antennas
2004 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference, 2004Microstrip patch antenna is generally the most popular antenna for portable devices. These antennas however are inherently narrow band. To obtain a wide bandwidth form a microstrip patch antenna the substrate thickness has to be increased and the dielectric constant of the substrate has to be kept as low as possible [1].
Tharaka Dissanayake +2 more
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2014
In this chapter we will study some simple dipole type configurations that can provide a broader bandwidth: the cylindrical dipole and biconical antenna. In addition, the chapter introduces the folded dipole antenna, which can provide better matching characteristics than that of the single dipole.
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In this chapter we will study some simple dipole type configurations that can provide a broader bandwidth: the cylindrical dipole and biconical antenna. In addition, the chapter introduces the folded dipole antenna, which can provide better matching characteristics than that of the single dipole.
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Broadband stacked printed antennas
2004 10th International Symposium on Antenna Technology and Applied Electromagnetics and URSI Conference, 2004Microstrip 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, 2012Three 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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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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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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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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Broadband traveling wave antennas
IRE International Convention Record, 2005The 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, 2007Design 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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