Millimeter-Wave Microstrip Array Antenna for Automotive Radars

Hideo IIZUKA; Toshiaki WATANABE; Kazuo SATO; Kunitoshi NISHIKAWA

Millimeter-Wave Microstrip Array Antenna for Automotive Radars

Hideo IIZUKA, Toshiaki WATANABE, Kazuo SATO, Kunitoshi NISHIKAWA

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A microstrip array antenna with 45-degree inclined linear polarization is proposed for automotive radars. The proposed antenna has the advantages of high aperture efficiency, low profile and ease of manufacture. The rectangular radiating elements inclined at 45 degrees to the straight microstrip line are directly connected to it at their corners in the proposed array antenna. The radiating element has a feature that radiation conductance for co-polarization is controlled widely enough to set desired amplitude distribution keeping excited mode for cross-polarization negligibly small. The feed line loss of the linear array antenna having 15 wavelengths is estimated 0.9 dB in the design taking the loss of the microstrip line into account. The performance of two types of developed antennas, for electrical and mechanical scanning radars, is presented. The fan beam subarray antenna for electrical scanning radars has an aperture efficiency of 53% with gain of 22.5 dBi at 76.5 GHz. For mechanical scanning radars, the two-stage series feeding circuit is also proposed for lower feed line loss and setting desired amplitude distribution. The pencil beam array antenna has an aperture efficiency of 39% with gain of 32.2 dBi at 76.5 GHz.

Publication: IEICE TRANSACTIONS on Communications Vol.E86-B No.9 pp.2728-2738

Publication Date: 2003/09/01

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Type of Manuscript: PAPER

Category: Antennas and Propagation

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Hideo IIZUKA, Toshiaki WATANABE, Kazuo SATO, Kunitoshi NISHIKAWA, "Millimeter-Wave Microstrip Array Antenna for Automotive Radars" in IEICE TRANSACTIONS on Communications, vol. E86-B, no. 9, pp. 2728-2738, September 2003, doi: .
Abstract: A microstrip array antenna with 45-degree inclined linear polarization is proposed for automotive radars. The proposed antenna has the advantages of high aperture efficiency, low profile and ease of manufacture. The rectangular radiating elements inclined at 45 degrees to the straight microstrip line are directly connected to it at their corners in the proposed array antenna. The radiating element has a feature that radiation conductance for co-polarization is controlled widely enough to set desired amplitude distribution keeping excited mode for cross-polarization negligibly small. The feed line loss of the linear array antenna having 15 wavelengths is estimated 0.9 dB in the design taking the loss of the microstrip line into account. The performance of two types of developed antennas, for electrical and mechanical scanning radars, is presented. The fan beam subarray antenna for electrical scanning radars has an aperture efficiency of 53% with gain of 22.5 dBi at 76.5 GHz. For mechanical scanning radars, the two-stage series feeding circuit is also proposed for lower feed line loss and setting desired amplitude distribution. The pencil beam array antenna has an aperture efficiency of 39% with gain of 32.2 dBi at 76.5 GHz.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/e86-b_9_2728/_p

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@ARTICLE{e86-b_9_2728,
author={Hideo IIZUKA, Toshiaki WATANABE, Kazuo SATO, Kunitoshi NISHIKAWA, },
journal={IEICE TRANSACTIONS on Communications},
title={Millimeter-Wave Microstrip Array Antenna for Automotive Radars},
year={2003},
volume={E86-B},
number={9},
pages={2728-2738},
abstract={A microstrip array antenna with 45-degree inclined linear polarization is proposed for automotive radars. The proposed antenna has the advantages of high aperture efficiency, low profile and ease of manufacture. The rectangular radiating elements inclined at 45 degrees to the straight microstrip line are directly connected to it at their corners in the proposed array antenna. The radiating element has a feature that radiation conductance for co-polarization is controlled widely enough to set desired amplitude distribution keeping excited mode for cross-polarization negligibly small. The feed line loss of the linear array antenna having 15 wavelengths is estimated 0.9 dB in the design taking the loss of the microstrip line into account. The performance of two types of developed antennas, for electrical and mechanical scanning radars, is presented. The fan beam subarray antenna for electrical scanning radars has an aperture efficiency of 53% with gain of 22.5 dBi at 76.5 GHz. For mechanical scanning radars, the two-stage series feeding circuit is also proposed for lower feed line loss and setting desired amplitude distribution. The pencil beam array antenna has an aperture efficiency of 39% with gain of 32.2 dBi at 76.5 GHz.},
keywords={},
doi={},
ISSN={},
month={September},}

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TY - JOUR
TI - Millimeter-Wave Microstrip Array Antenna for Automotive Radars
T2 - IEICE TRANSACTIONS on Communications
SP - 2728
EP - 2738
AU - Hideo IIZUKA
AU - Toshiaki WATANABE
AU - Kazuo SATO
AU - Kunitoshi NISHIKAWA
PY - 2003
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E86-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2003
AB - A microstrip array antenna with 45-degree inclined linear polarization is proposed for automotive radars. The proposed antenna has the advantages of high aperture efficiency, low profile and ease of manufacture. The rectangular radiating elements inclined at 45 degrees to the straight microstrip line are directly connected to it at their corners in the proposed array antenna. The radiating element has a feature that radiation conductance for co-polarization is controlled widely enough to set desired amplitude distribution keeping excited mode for cross-polarization negligibly small. The feed line loss of the linear array antenna having 15 wavelengths is estimated 0.9 dB in the design taking the loss of the microstrip line into account. The performance of two types of developed antennas, for electrical and mechanical scanning radars, is presented. The fan beam subarray antenna for electrical scanning radars has an aperture efficiency of 53% with gain of 22.5 dBi at 76.5 GHz. For mechanical scanning radars, the two-stage series feeding circuit is also proposed for lower feed line loss and setting desired amplitude distribution. The pencil beam array antenna has an aperture efficiency of 39% with gain of 32.2 dBi at 76.5 GHz.
ER -