A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide

Jae-Ho LEE; Jiro HIROKAWA; Makoto ANDO

doi:10.1587/transcom.E94.B.326

A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide

Jae-Ho LEE, Jiro HIROKAWA, Makoto ANDO

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Post-wall waveguide with a linear array of reflection-canceling slot pairs and center-feed is designed to cancel the frequency dependent tilting of the main beam and enhance the bandwidth of the antenna boresight gain. The array is fed at the center of the waveguide from the backside; the length of the radiating waveguide is halved and the long line effect in traveling wave operation is suppressed. Authors establish the array design procedure in separate steps to reduce the computational load in the iterative optimization by using Ansoft HFSS simulator. A center-feed linear array as well as an end-feed equivalent with uniform excitation is designed for 25.6 GHz operation and measured. The measured performances confirm the design and the advantage of the centre-feed; a frequency independent boresight beam is observed and the frequency bandwidth for 3 dB gain reduction is enhanced by 1.5 times compared to the end-feed array.

Publication: IEICE TRANSACTIONS on Communications Vol.E94-B No.1 pp.326-329

Publication Date: 2011/01/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E94.B.326

Type of Manuscript: LETTER

Category: Antennas and Propagation

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Jae-Ho LEE, Jiro HIROKAWA, Makoto ANDO, "A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide" in IEICE TRANSACTIONS on Communications, vol. E94-B, no. 1, pp. 326-329, January 2011, doi: 10.1587/transcom.E94.B.326.
Abstract: Post-wall waveguide with a linear array of reflection-canceling slot pairs and center-feed is designed to cancel the frequency dependent tilting of the main beam and enhance the bandwidth of the antenna boresight gain. The array is fed at the center of the waveguide from the backside; the length of the radiating waveguide is halved and the long line effect in traveling wave operation is suppressed. Authors establish the array design procedure in separate steps to reduce the computational load in the iterative optimization by using Ansoft HFSS simulator. A center-feed linear array as well as an end-feed equivalent with uniform excitation is designed for 25.6 GHz operation and measured. The measured performances confirm the design and the advantage of the centre-feed; a frequency independent boresight beam is observed and the frequency bandwidth for 3 dB gain reduction is enhanced by 1.5 times compared to the end-feed array.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.326/_p

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@ARTICLE{e94-b_1_326,
author={Jae-Ho LEE, Jiro HIROKAWA, Makoto ANDO, },
journal={IEICE TRANSACTIONS on Communications},
title={A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide},
year={2011},
volume={E94-B},
number={1},
pages={326-329},
abstract={Post-wall waveguide with a linear array of reflection-canceling slot pairs and center-feed is designed to cancel the frequency dependent tilting of the main beam and enhance the bandwidth of the antenna boresight gain. The array is fed at the center of the waveguide from the backside; the length of the radiating waveguide is halved and the long line effect in traveling wave operation is suppressed. Authors establish the array design procedure in separate steps to reduce the computational load in the iterative optimization by using Ansoft HFSS simulator. A center-feed linear array as well as an end-feed equivalent with uniform excitation is designed for 25.6 GHz operation and measured. The measured performances confirm the design and the advantage of the centre-feed; a frequency independent boresight beam is observed and the frequency bandwidth for 3 dB gain reduction is enhanced by 1.5 times compared to the end-feed array.},
keywords={},
doi={10.1587/transcom.E94.B.326},
ISSN={1745-1345},
month={January},}

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TY - JOUR
TI - A Center-Feed Linear Array of Reflection-Canceling Slot Pairs on Post-Wall Waveguide
T2 - IEICE TRANSACTIONS on Communications
SP - 326
EP - 329
AU - Jae-Ho LEE
AU - Jiro HIROKAWA
AU - Makoto ANDO
PY - 2011
DO - 10.1587/transcom.E94.B.326
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2011
AB - Post-wall waveguide with a linear array of reflection-canceling slot pairs and center-feed is designed to cancel the frequency dependent tilting of the main beam and enhance the bandwidth of the antenna boresight gain. The array is fed at the center of the waveguide from the backside; the length of the radiating waveguide is halved and the long line effect in traveling wave operation is suppressed. Authors establish the array design procedure in separate steps to reduce the computational load in the iterative optimization by using Ansoft HFSS simulator. A center-feed linear array as well as an end-feed equivalent with uniform excitation is designed for 25.6 GHz operation and measured. The measured performances confirm the design and the advantage of the centre-feed; a frequency independent boresight beam is observed and the frequency bandwidth for 3 dB gain reduction is enhanced by 1.5 times compared to the end-feed array.
ER -