Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band

Kazuyuki SEO; Kunio SAKAKIBARA; Nobuyoshi KIKUMA

doi:10.1587/transcom.E94.B.1184

Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band

Kazuyuki SEO, Kunio SAKAKIBARA, Nobuyoshi KIKUMA

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Many kinds of microstrip array antennas have been developed in the millimeter-wave band. In order to avoid feeding loss and the decrease of antenna gain by beam shift due to frequency changes, center-fed array antennas are advantageous. In this case, the element spacing around the feeding circuit of the transition from the waveguide to two microstrip lines is larger than one wavelength. Therefore, the sidelobe level grows significantly. In order to suppress the sidelobe level, we propose transitions with slot radiators. Moreover, any polarization angles can be achieved by changing the slot angle. A wide variety from 1.5% to 70% of slot radiator coupling powers can be achieved. To investigate the performance of the proposed transition, 10, 22 and 30-element center-fed microstrip comb-line antennas with the proposed transition were developed at 76.5 GHz, and measured performance was evaluated in the millimeter-wave band.

Publication: IEICE TRANSACTIONS on Communications Vol.E94-B No.5 pp.1184-1193

Publication Date: 2011/05/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E94.B.1184

Type of Manuscript: Special Section PAPER (Special Section on Antenna and Propagation Technologies Contributing to Diversification of Wireless Technologies)

Category: Antennas and Antenna Measurement

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Kazuyuki SEO, Kunio SAKAKIBARA, Nobuyoshi KIKUMA, "Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band" in IEICE TRANSACTIONS on Communications, vol. E94-B, no. 5, pp. 1184-1193, May 2011, doi: 10.1587/transcom.E94.B.1184.
Abstract: Many kinds of microstrip array antennas have been developed in the millimeter-wave band. In order to avoid feeding loss and the decrease of antenna gain by beam shift due to frequency changes, center-fed array antennas are advantageous. In this case, the element spacing around the feeding circuit of the transition from the waveguide to two microstrip lines is larger than one wavelength. Therefore, the sidelobe level grows significantly. In order to suppress the sidelobe level, we propose transitions with slot radiators. Moreover, any polarization angles can be achieved by changing the slot angle. A wide variety from 1.5% to 70% of slot radiator coupling powers can be achieved. To investigate the performance of the proposed transition, 10, 22 and 30-element center-fed microstrip comb-line antennas with the proposed transition were developed at 76.5 GHz, and measured performance was evaluated in the millimeter-wave band.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.1184/_p

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@ARTICLE{e94-b_5_1184,
author={Kazuyuki SEO, Kunio SAKAKIBARA, Nobuyoshi KIKUMA, },
journal={IEICE TRANSACTIONS on Communications},
title={Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band},
year={2011},
volume={E94-B},
number={5},
pages={1184-1193},
abstract={Many kinds of microstrip array antennas have been developed in the millimeter-wave band. In order to avoid feeding loss and the decrease of antenna gain by beam shift due to frequency changes, center-fed array antennas are advantageous. In this case, the element spacing around the feeding circuit of the transition from the waveguide to two microstrip lines is larger than one wavelength. Therefore, the sidelobe level grows significantly. In order to suppress the sidelobe level, we propose transitions with slot radiators. Moreover, any polarization angles can be achieved by changing the slot angle. A wide variety from 1.5% to 70% of slot radiator coupling powers can be achieved. To investigate the performance of the proposed transition, 10, 22 and 30-element center-fed microstrip comb-line antennas with the proposed transition were developed at 76.5 GHz, and measured performance was evaluated in the millimeter-wave band.},
keywords={},
doi={10.1587/transcom.E94.B.1184},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band
T2 - IEICE TRANSACTIONS on Communications
SP - 1184
EP - 1193
AU - Kazuyuki SEO
AU - Kunio SAKAKIBARA
AU - Nobuyoshi KIKUMA
PY - 2011
DO - 10.1587/transcom.E94.B.1184
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2011
AB - Many kinds of microstrip array antennas have been developed in the millimeter-wave band. In order to avoid feeding loss and the decrease of antenna gain by beam shift due to frequency changes, center-fed array antennas are advantageous. In this case, the element spacing around the feeding circuit of the transition from the waveguide to two microstrip lines is larger than one wavelength. Therefore, the sidelobe level grows significantly. In order to suppress the sidelobe level, we propose transitions with slot radiators. Moreover, any polarization angles can be achieved by changing the slot angle. A wide variety from 1.5% to 70% of slot radiator coupling powers can be achieved. To investigate the performance of the proposed transition, 10, 22 and 30-element center-fed microstrip comb-line antennas with the proposed transition were developed at 76.5 GHz, and measured performance was evaluated in the millimeter-wave band.
ER -