Directive planar antennas based on leaky waves

Jackson, David R.

doi:10.1109/eucap.2012.6206733

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2013

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“…In order to retain the desired beam characteristics, a phase-correcting mirror or additional delay lines after the coupling elements are needed, and the modified system becomes bulkier and more complex. The second approach uses additional reflecting elements in the waveguide, one close to each coupling element [12]. The additional reflections are intended to compensate the reflections coming from the coupling holes themselves.…”

Section: B Feed Structurementioning

confidence: 99%

A 32-element frequency-steered array antenna for reflectometry in W-band

Rohmann

Wolf

Kasparek

et al. 2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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In fusion plasma experiments, Doppler reflectometry is used as a contactless diagnostic to evaluate density fluctuations and plasma rotation profiles. It demands a steerable beam that provides a defined spot-size for the wave plasma interaction and multiple frequencies to probe plasma regions of different densities. In this paper, the suitability of a frequencyscanned phased array as a front-end for a Doppler reflectometry system is demonstrated.

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Section: B Feed Structurementioning

confidence: 99%