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Feed network for antenna decoupling
2009 Loughborough Antennas & Propagation Conference, 2009A decoupling network for improving the isolation between two highly coupled antennas is proposed. In this method the input signals are combined linearly so that the mutual coupling between the ports becomes zero. The scattering matrix of the network is found using a mathematical procedure and has been demonstrated in this paper for a previously ...
Donya Jasteh +3 more
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Feed optimization in multi-feed antennas
WESCON/57 Conference Record, 1957The problem of attaining close beam spacing and high crossover levels in multi-beam antennas is discussed with attention directed toward the mutual effects of the several feeds. A series of measured curves is used to present the mutual coupling effects on the primary feed patterns.
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1982
In a quasi-optical antenna system, it makes little difference, so far as the illumination characteristics of the feed are concerned, whether the collimating device is reflective (i.e. single or multiple mirrors) or refractive (i.e. a lens). In either case it is the function of the feed to provide a radiation pattern which is largely confined to the ...
A. W. Love, A. W. Rudge, A. D. Olver
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In a quasi-optical antenna system, it makes little difference, so far as the illumination characteristics of the feed are concerned, whether the collimating device is reflective (i.e. single or multiple mirrors) or refractive (i.e. a lens). In either case it is the function of the feed to provide a radiation pattern which is largely confined to the ...
A. W. Love, A. W. Rudge, A. D. Olver
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Proximity feed microstrip antenna
Electronics and Communications in Japan (Part I: Communications), 1986AbstractThe proximity feed microstrip antenna (PMA) fed via a gap enables switching of the polarization with a simple operation of opening or shorting the end of the feed. However, since the PMA is coupled electromagnetically with the feed line printed on the same surface as the antenna, the effect of the feed line on the antenna characteristics is ...
Katsuyuki Haishi, Kiyohiko Itoh
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IEE Proceedings - Microwaves, Antennas and Propagation, 2003
A new dual feed antenna element is presented, consisting of a single antenna element with two matched and isolated ports. Matching, bandwidth, and losses are comparable to a standard dipole. The radiation patterns are highly omnidirectional with linear polarisation. The antenna can be implemented both with and without a groundplane.
P. Hallbjörner, P. Hallbjörner
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A new dual feed antenna element is presented, consisting of a single antenna element with two matched and isolated ports. Matching, bandwidth, and losses are comparable to a standard dipole. The radiation patterns are highly omnidirectional with linear polarisation. The antenna can be implemented both with and without a groundplane.
P. Hallbjörner, P. Hallbjörner
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Transparent antenna with conical feed
2013 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2013), 2013An equation for the current along a transparent radiator is written and solved. Based on this solution the current distribution along the radiator axis is analyzed. It is shown that the current decays abruptly along the radiator. For this reason the transmitted signal depends weakly on the radiator length.
Boris Levin +2 more
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Feeding networks for sinuous antennas
Microwave and Optical Technology Letters, 1999Reference LEMA-ARTICLE-1999-002doi:10.1002/(SICI)1098-2760(19990205)20:3 3.0.CO;2-C Record created on 2006-11-30, modified on 2016-08 ...
Ph. Gonnet +3 more
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Conical feed transparent antenna
2012 IEEE 27th Convention of Electrical and Electronics Engineers in Israel, 2012A transparent antenna using conical metallic feed is proposed. Characteristics of transparent conductive films are revised. It is verified that the sheet resistivity of a conductive transparent layer differs significantly from that of a metallic (copper) layer with a thickness equal to the penetration depth.
B. Levin, M. Haridim
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UWB planar monopole antenna with differential feed
2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016This paper presents a differentially driven planar monopole antenna for UWB (Ultra-Wideband) applications. The dimensions of the antenna structure are first studied to achieve wideband characteristics with good impedance matching. The goal is to find dimensions which satisfy the UWB demands but also to show that antenna size can be miniaturized by ...
Marko Sonkki +4 more
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Linear-array antennas and feeds
1984The problems and techniques of linear-array design have been divided in this chapter into three general parts. The first concerns itself with general pattern theory, that is, the relation between the far-zone pattern of an array and the amplitude and phase distribution among the elements and their spacing; in this section no attention is paid to the ...
J. E. Eaton +2 more
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