A 3-D luneburg lens antenna fabricated by polymer jetting rapid prototyping

Min Liang, Wei Ren Ng, Kihun Chang, Kokou Gbele, Michael E. Gehm, Hao Xin

Research output: Contribution to journalArticle

107 Citations (Scopus)

Abstract

In this work, we designed, built, and tested a low-gain 20 dBi Luneburg Lens antenna using a rapid prototyping machine as a proof of concept demonstrator. The required continuously varying relative permittivity profile was implemented by changing the size of plastic blocks centered on the junctions of a plastic rod space frame. A 12-cm (4λ<inf>0</inf> at at 10 GHz) diameter lens is designed to work at X-band. The effective permittivity of the unit cell is calculated by effective medium theory and simulated by full-wave finite-element simulations. The fabrication is implemented by a polymer jetting rapid prototyping method. In the measurement, the lens antenna is fed by an X-band waveguide. The measured gain of the antenna at X-band is from 17.3 to 20.3 dB. The measured half-power beam width is from 19° to 12.7° while the side lobes are about 25 dB below the main peak. Good agreement between simulation and experimental results is obtained.

Original languageEnglish (US)
Article number6698375
Pages (from-to)1799-1807
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Volume62
Issue number4
DOIs
StatePublished - 2014

Fingerprint

lens antennas
Lens antennas
rapid prototyping
Rapid prototyping
superhigh frequencies
Permittivity
Plastics
polymers
Antenna feeders
Polymers
plastics
permittivity
antenna feeds
Lenses
Waveguides
Antennas
Fabrication
lobes
rods
antennas

Keywords

  • Gradient index
  • lens antenna
  • Luneburg lens
  • rapid prototyping

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

A 3-D luneburg lens antenna fabricated by polymer jetting rapid prototyping. / Liang, Min; Ng, Wei Ren; Chang, Kihun; Gbele, Kokou; Gehm, Michael E.; Xin, Hao.

In: IEEE Transactions on Antennas and Propagation, Vol. 62, No. 4, 6698375, 2014, p. 1799-1807.

Research output: Contribution to journalArticle

Liang, Min ; Ng, Wei Ren ; Chang, Kihun ; Gbele, Kokou ; Gehm, Michael E. ; Xin, Hao. / A 3-D luneburg lens antenna fabricated by polymer jetting rapid prototyping. In: IEEE Transactions on Antennas and Propagation. 2014 ; Vol. 62, No. 4. pp. 1799-1807.
@article{f6b4cb9cfc494016b0bdd07ac5a51676,
title = "A 3-D luneburg lens antenna fabricated by polymer jetting rapid prototyping",
abstract = "In this work, we designed, built, and tested a low-gain 20 dBi Luneburg Lens antenna using a rapid prototyping machine as a proof of concept demonstrator. The required continuously varying relative permittivity profile was implemented by changing the size of plastic blocks centered on the junctions of a plastic rod space frame. A 12-cm (4λ0 at at 10 GHz) diameter lens is designed to work at X-band. The effective permittivity of the unit cell is calculated by effective medium theory and simulated by full-wave finite-element simulations. The fabrication is implemented by a polymer jetting rapid prototyping method. In the measurement, the lens antenna is fed by an X-band waveguide. The measured gain of the antenna at X-band is from 17.3 to 20.3 dB. The measured half-power beam width is from 19° to 12.7° while the side lobes are about 25 dB below the main peak. Good agreement between simulation and experimental results is obtained.",
keywords = "Gradient index, lens antenna, Luneburg lens, rapid prototyping",
author = "Min Liang and Ng, {Wei Ren} and Kihun Chang and Kokou Gbele and Gehm, {Michael E.} and Hao Xin",
year = "2014",
doi = "10.1109/TAP.2013.2297165",
language = "English (US)",
volume = "62",
pages = "1799--1807",
journal = "IEEE Transactions on Antennas and Propagation",
issn = "0018-926X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",

}

TY - JOUR

T1 - A 3-D luneburg lens antenna fabricated by polymer jetting rapid prototyping

AU - Liang, Min

AU - Ng, Wei Ren

AU - Chang, Kihun

AU - Gbele, Kokou

AU - Gehm, Michael E.

AU - Xin, Hao

PY - 2014

Y1 - 2014

N2 - In this work, we designed, built, and tested a low-gain 20 dBi Luneburg Lens antenna using a rapid prototyping machine as a proof of concept demonstrator. The required continuously varying relative permittivity profile was implemented by changing the size of plastic blocks centered on the junctions of a plastic rod space frame. A 12-cm (4λ0 at at 10 GHz) diameter lens is designed to work at X-band. The effective permittivity of the unit cell is calculated by effective medium theory and simulated by full-wave finite-element simulations. The fabrication is implemented by a polymer jetting rapid prototyping method. In the measurement, the lens antenna is fed by an X-band waveguide. The measured gain of the antenna at X-band is from 17.3 to 20.3 dB. The measured half-power beam width is from 19° to 12.7° while the side lobes are about 25 dB below the main peak. Good agreement between simulation and experimental results is obtained.

AB - In this work, we designed, built, and tested a low-gain 20 dBi Luneburg Lens antenna using a rapid prototyping machine as a proof of concept demonstrator. The required continuously varying relative permittivity profile was implemented by changing the size of plastic blocks centered on the junctions of a plastic rod space frame. A 12-cm (4λ0 at at 10 GHz) diameter lens is designed to work at X-band. The effective permittivity of the unit cell is calculated by effective medium theory and simulated by full-wave finite-element simulations. The fabrication is implemented by a polymer jetting rapid prototyping method. In the measurement, the lens antenna is fed by an X-band waveguide. The measured gain of the antenna at X-band is from 17.3 to 20.3 dB. The measured half-power beam width is from 19° to 12.7° while the side lobes are about 25 dB below the main peak. Good agreement between simulation and experimental results is obtained.

KW - Gradient index

KW - lens antenna

KW - Luneburg lens

KW - rapid prototyping

UR - http://www.scopus.com/inward/record.url?scp=84907883093&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907883093&partnerID=8YFLogxK

U2 - 10.1109/TAP.2013.2297165

DO - 10.1109/TAP.2013.2297165

M3 - Article

AN - SCOPUS:84907883093

VL - 62

SP - 1799

EP - 1807

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

SN - 0018-926X

IS - 4

M1 - 6698375

ER -