Bragg scattering of EM waves by microwave produced periodic plasma layers

Y. S. Zhang, Spencer Kuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Uses of artificial plasma layers as Bragg reflectors for applications in telecommunication links and over-the-horizon (OTH) radars are currently being investigated in a large chamber of Plexiglas. Two microwave beams at right angles to each other are directed through the S-band horns into the chamber containing air at a pressure comparable to that of the upper atmosphere (approximately 50 km). Inside the chamber, the microwave beams produce a series of equally spaced plasma layers parallel to the plane bisecting the two beams. A third beam is then incident on the plasma layers, and the reflected signal is collected for analysis. A sweep microwave generator (4-8 GHz) is used to generate a test wave which enters the chamber through a C-band horn. The test wave is swept in a frequency range much higher than the plasma cutoff frequency in order to separate the coherent Bragg reflection mechanism from the cutoff mechanism. The incident angle of the test wave with respect to the normal of the plasma layers is 45°. Hence, one of the S-band horns located at right angles to the adjacent side can be used as the receiver of a Bragg scattered test wave. The experimental results agree very well with the theory.

Original languageEnglish (US)
Title of host publicationIEEE Int Conf Plasma Sci 1989
Editors Anon
PublisherPubl by IEEE
Pages150-151
Number of pages2
StatePublished - 1989
EventIEEE International Conference on Plasma Science 1989 - Buffalo, NY, USA
Duration: May 22 1989May 24 1989

Other

OtherIEEE International Conference on Plasma Science 1989
CityBuffalo, NY, USA
Period5/22/895/24/89

Fingerprint

Electromagnetic waves
Microwaves
Scattering
Plasmas
Bragg reflectors
Upper atmosphere
Cutoff frequency
Telecommunication links
Air

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Zhang, Y. S., & Kuo, S. (1989). Bragg scattering of EM waves by microwave produced periodic plasma layers. In Anon (Ed.), IEEE Int Conf Plasma Sci 1989 (pp. 150-151). Publ by IEEE.

Bragg scattering of EM waves by microwave produced periodic plasma layers. / Zhang, Y. S.; Kuo, Spencer.

IEEE Int Conf Plasma Sci 1989. ed. / Anon. Publ by IEEE, 1989. p. 150-151.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, YS & Kuo, S 1989, Bragg scattering of EM waves by microwave produced periodic plasma layers. in Anon (ed.), IEEE Int Conf Plasma Sci 1989. Publ by IEEE, pp. 150-151, IEEE International Conference on Plasma Science 1989, Buffalo, NY, USA, 5/22/89.
Zhang YS, Kuo S. Bragg scattering of EM waves by microwave produced periodic plasma layers. In Anon, editor, IEEE Int Conf Plasma Sci 1989. Publ by IEEE. 1989. p. 150-151
Zhang, Y. S. ; Kuo, Spencer. / Bragg scattering of EM waves by microwave produced periodic plasma layers. IEEE Int Conf Plasma Sci 1989. editor / Anon. Publ by IEEE, 1989. pp. 150-151
@inproceedings{fef82f30ff8b4196a4f2ba2cebbe9015,
title = "Bragg scattering of EM waves by microwave produced periodic plasma layers",
abstract = "Uses of artificial plasma layers as Bragg reflectors for applications in telecommunication links and over-the-horizon (OTH) radars are currently being investigated in a large chamber of Plexiglas. Two microwave beams at right angles to each other are directed through the S-band horns into the chamber containing air at a pressure comparable to that of the upper atmosphere (approximately 50 km). Inside the chamber, the microwave beams produce a series of equally spaced plasma layers parallel to the plane bisecting the two beams. A third beam is then incident on the plasma layers, and the reflected signal is collected for analysis. A sweep microwave generator (4-8 GHz) is used to generate a test wave which enters the chamber through a C-band horn. The test wave is swept in a frequency range much higher than the plasma cutoff frequency in order to separate the coherent Bragg reflection mechanism from the cutoff mechanism. The incident angle of the test wave with respect to the normal of the plasma layers is 45°. Hence, one of the S-band horns located at right angles to the adjacent side can be used as the receiver of a Bragg scattered test wave. The experimental results agree very well with the theory.",
author = "Zhang, {Y. S.} and Spencer Kuo",
year = "1989",
language = "English (US)",
pages = "150--151",
editor = "Anon",
booktitle = "IEEE Int Conf Plasma Sci 1989",
publisher = "Publ by IEEE",

}

TY - GEN

T1 - Bragg scattering of EM waves by microwave produced periodic plasma layers

AU - Zhang, Y. S.

AU - Kuo, Spencer

PY - 1989

Y1 - 1989

N2 - Uses of artificial plasma layers as Bragg reflectors for applications in telecommunication links and over-the-horizon (OTH) radars are currently being investigated in a large chamber of Plexiglas. Two microwave beams at right angles to each other are directed through the S-band horns into the chamber containing air at a pressure comparable to that of the upper atmosphere (approximately 50 km). Inside the chamber, the microwave beams produce a series of equally spaced plasma layers parallel to the plane bisecting the two beams. A third beam is then incident on the plasma layers, and the reflected signal is collected for analysis. A sweep microwave generator (4-8 GHz) is used to generate a test wave which enters the chamber through a C-band horn. The test wave is swept in a frequency range much higher than the plasma cutoff frequency in order to separate the coherent Bragg reflection mechanism from the cutoff mechanism. The incident angle of the test wave with respect to the normal of the plasma layers is 45°. Hence, one of the S-band horns located at right angles to the adjacent side can be used as the receiver of a Bragg scattered test wave. The experimental results agree very well with the theory.

AB - Uses of artificial plasma layers as Bragg reflectors for applications in telecommunication links and over-the-horizon (OTH) radars are currently being investigated in a large chamber of Plexiglas. Two microwave beams at right angles to each other are directed through the S-band horns into the chamber containing air at a pressure comparable to that of the upper atmosphere (approximately 50 km). Inside the chamber, the microwave beams produce a series of equally spaced plasma layers parallel to the plane bisecting the two beams. A third beam is then incident on the plasma layers, and the reflected signal is collected for analysis. A sweep microwave generator (4-8 GHz) is used to generate a test wave which enters the chamber through a C-band horn. The test wave is swept in a frequency range much higher than the plasma cutoff frequency in order to separate the coherent Bragg reflection mechanism from the cutoff mechanism. The incident angle of the test wave with respect to the normal of the plasma layers is 45°. Hence, one of the S-band horns located at right angles to the adjacent side can be used as the receiver of a Bragg scattered test wave. The experimental results agree very well with the theory.

UR - http://www.scopus.com/inward/record.url?scp=0024935273&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024935273&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0024935273

SP - 150

EP - 151

BT - IEEE Int Conf Plasma Sci 1989

A2 - Anon, null

PB - Publ by IEEE

ER -