The Eleven Antenna: A Compact Low-Profile Decade Bandwidth Dual Polarized Feed for Reflector Antennas

Olsson, Robin; Kildal, Per-Simon; Weinreb, S.

doi:10.1109/tap.2005.863392

Cited by 117 publications

(58 citation statements)

References 23 publications

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“…At those frequencies, printed antenna technology is preferred and, moreover, it can be easily combined with bolometers [6], [7]. One such feed is presented in [13]. However, due to fabrication constraints at submillimeter waves, it is highly convenient that printed antennas can be implemented within a single planar metallization layer (uniplanar structure).…”

mentioning

confidence: 99%

Broadband Integrated Lens for Illuminating Reflector Antenna With Constant Aperture Efficiency

Fernandes

Lima

Costa

2010

IEEE Trans. Antennas Propagat.

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Abstract-A new integrated shaped lens antenna configuration is described with frequency stable radiation pattern and phase center position across a broad 1:3 frequency band, which can be used for focal plane reflector feeding in quasi-optical radio telescope systems. The lens is compatible with the integration of ultrawideband uniplanar printed feeds at its base and equally broadband mixing devices, like the Hot Electron Bolometer (HEB), although these are not used in the present work. Measurements on a scaled mm-wave lab prototype have confirmed stable performance versus frequency, with only 1 dB directivity variation, and better than 94% Gaussicity, thanks to the possibility to impose a predefined output radiation pattern template. Simulations were performed to test the illumination of an off-set parabolic reflector by the lens radiation pattern, which confirmed reasonably constant aperture efficiency in the order of 78% across the 100% bandwidth.Index Terms-Broadband stable radiation pattern, broadband stable phase center position, integrated lens antennas, millimeterand submillimeter wave antennas, reflector feed.

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mentioning

confidence: 99%

Broadband Integrated Lens for Illuminating Reflector Antenna With Constant Aperture Efficiency

Fernandes

Lima

Costa

2010

IEEE Trans. Antennas Propagat.

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“…Therefore, the new antenna is referred to as the self-grounded Bow-Tie. This truncation method is partly inspired by our other UWB antenna research activities [6]- [12]. Fig.…”

Section: Geometrical Configuration Of Self-grounded Bow-tiementioning

confidence: 99%

The self-grounded Bow-Tie antenna

Yang

Kishk

2011

2011 IEEE International Symposium on Antennas and Propagation (APSURSI)

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Abstract-The self-grounded Bow-Tie is a new type ultrawide band (UWB) small antenna. It is compact, simple and has low profile and directional UWB radiation characteristics. Simulations and measurements have shown its ultra-wideband performance, such as about -10 dB reflection coefficient and stable radiation patterns over a frequency range of 2 -15 GHz, and good time-domain impulse response. Penetration ability of the antenna through a concrete wall has been also tested. Compared to a Vivaldi antenna, the test shows the superiority of the self-grounded Bow-Tie to the Vivaldi.

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“…Part (b) shows the same over 600 MHz to 2000 MHz. The system gain G sys has been approximately calculated from the terminated characteristics using Equation (1), where, k = 1.38 × 10 −23 J/K (Boltzmann constant), T rec = 50 ‡ , T load = 300 K and f = 300000 Hz is the resolution bandwidth. The gain plots are also shown in Fig.…”

Section: Setup and Gmrt System Response Applied For Testing The Ultramentioning

confidence: 99%

“…This requires ultra wideband antenna-feeds mounted at the focus of radio telescope (dish reflector) antennas. Several ultra wideband antennas that shows the possibility of being used as antenna-feed with parabolic reflectors has been reported [1][2][3][4][5][6][7][8]. However, the actual testing of any of these on radio telescope antennas has not been reported so far.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Testing Ultra Wideband Antenna-Feeds on Radio Telescope Dish Antennas

Joardar¹,

Bhattacharya²

2008

PIER

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Abstract-A prototype of dual polarized ultra wideband antenna-feed was fabricated (200 MHz-2000 MHz) for usage in low frequency radio astronomy at the GMRT (Giant Meterwave Radio Telescope). The feed was mounted on one of the GMRT dish antennas and tested using signals from the radio galaxy Cygnus A and zenith sky. Modeling of the GMRT dish with the antenna-feed mounted at its focus has been done. With the use of simulated radiation patterns of the antennafeed and the measured results, the system independent deflections at various frequencies were computed. The performances of the GMRT dish with present mesh and RMS (root mean square) efficiencies have been studied. Performance of the GMRT dish with 100% mesh and RMS efficiencies were computed. Future guidelines of ultra wideband antenna-feed design for GMRT have been indicated. Improvements of the GMRT dishes have also been suggested.

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The Eleven Antenna: A Compact Low-Profile Decade Bandwidth Dual Polarized Feed for Reflector Antennas

Cited by 117 publications

References 23 publications

Broadband Integrated Lens for Illuminating Reflector Antenna With Constant Aperture Efficiency

Broadband Integrated Lens for Illuminating Reflector Antenna With Constant Aperture Efficiency

The self-grounded Bow-Tie antenna

A Novel Method for Testing Ultra Wideband Antenna-Feeds on Radio Telescope Dish Antennas

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