Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide

Shozab Shafiq; Yijing He; Qasim Ali; Syed Muzahir Abbas; Sun Houjun

doi:10.1109/USNC-URSI52151.2023.10237437

Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide

Shozab Shafiq, Yijing He^*, Qasim Ali, Syed Muzahir Abbas, Sun Houjun

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A navigational radar antenna comprising 4x 32 radiating elements fed by a ridge gap waveguide is presented. The antenna is designed at a millimeter-wave frequency band with a grid of horns making the aperture. The proposed structure has no electrical contact between the layers. There are a total of three metal layers, each separated by a small gap. A set of four horns forms an antenna unit cell which is fed by a single cavity-backed slot. The top metal layer is a radiating layer comprising a grid of 32 horn-based unit cells. The E-plane sectoral horn is used as a radiator and is optimized to reduce mutual coupling between adjacent horn elements. A cavity layer is added in the middle to increase the impedance bandwidth of the antenna. The complex distribution network based on the ridge gap waveguide lies at the bottom which feeds the array corporately. Circular Artificial Magnetic Conductor (AMC) pins are designed that confines the input power within the prescribed path. 3dB power dividers are designed with equal amplitudes and phases at all output ports. The proposed antenna array has a relative impedance bandwidth of 13.7% with an input reflection coefficient better than -10dB from the 65 GHz to 65.9 GHz frequency range.

Original language	English
Title of host publication	2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	427-428
Number of pages	2
ISBN (Electronic)	9781665442282
DOIs	https://doi.org/10.1109/USNC-URSI52151.2023.10237437
Publication status	Published - 2023
Event	2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Portland, United States Duration: 23 Jul 2023 → 28 Jul 2023

Publication series

Name	IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Volume	2023-July
ISSN (Print)	1522-3965

Conference

Conference	2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023
Country/Territory	United States
City	Portland
Period	23/07/23 → 28/07/23

Keywords

gap waveguide
millimeter-wave
ridge gap waveguide
slot array

Access to Document

10.1109/USNC-URSI52151.2023.10237437

Cite this

Shafiq, S., He, Y., Ali, Q., Abbas, S. M., & Houjun, S. (2023). Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide. In 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings (pp. 427-428). (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest); Vol. 2023-July). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/USNC-URSI52151.2023.10237437

Shafiq, Shozab ; He, Yijing ; Ali, Qasim et al. / Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide. 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. pp. 427-428 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)).

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title = "Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide",

abstract = "A navigational radar antenna comprising 4x 32 radiating elements fed by a ridge gap waveguide is presented. The antenna is designed at a millimeter-wave frequency band with a grid of horns making the aperture. The proposed structure has no electrical contact between the layers. There are a total of three metal layers, each separated by a small gap. A set of four horns forms an antenna unit cell which is fed by a single cavity-backed slot. The top metal layer is a radiating layer comprising a grid of 32 horn-based unit cells. The E-plane sectoral horn is used as a radiator and is optimized to reduce mutual coupling between adjacent horn elements. A cavity layer is added in the middle to increase the impedance bandwidth of the antenna. The complex distribution network based on the ridge gap waveguide lies at the bottom which feeds the array corporately. Circular Artificial Magnetic Conductor (AMC) pins are designed that confines the input power within the prescribed path. 3dB power dividers are designed with equal amplitudes and phases at all output ports. The proposed antenna array has a relative impedance bandwidth of 13.7% with an input reflection coefficient better than -10dB from the 65 GHz to 65.9 GHz frequency range.",

keywords = "gap waveguide, millimeter-wave, ridge gap waveguide, slot array",

author = "Shozab Shafiq and Yijing He and Qasim Ali and Abbas, {Syed Muzahir} and Sun Houjun",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 ; Conference date: 23-07-2023 Through 28-07-2023",

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Shafiq, S, He, Y, Ali, Q, Abbas, SM & Houjun, S 2023, Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide. in 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest), vol. 2023-July, Institute of Electrical and Electronics Engineers Inc., pp. 427-428, 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023, Portland, United States, 23/07/23. https://doi.org/10.1109/USNC-URSI52151.2023.10237437

Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide. / Shafiq, Shozab; He, Yijing; Ali, Qasim et al.
2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. p. 427-428 (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest); Vol. 2023-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide

AU - Shafiq, Shozab

AU - He, Yijing

AU - Ali, Qasim

AU - Abbas, Syed Muzahir

AU - Houjun, Sun

PY - 2023

Y1 - 2023

N2 - A navigational radar antenna comprising 4x 32 radiating elements fed by a ridge gap waveguide is presented. The antenna is designed at a millimeter-wave frequency band with a grid of horns making the aperture. The proposed structure has no electrical contact between the layers. There are a total of three metal layers, each separated by a small gap. A set of four horns forms an antenna unit cell which is fed by a single cavity-backed slot. The top metal layer is a radiating layer comprising a grid of 32 horn-based unit cells. The E-plane sectoral horn is used as a radiator and is optimized to reduce mutual coupling between adjacent horn elements. A cavity layer is added in the middle to increase the impedance bandwidth of the antenna. The complex distribution network based on the ridge gap waveguide lies at the bottom which feeds the array corporately. Circular Artificial Magnetic Conductor (AMC) pins are designed that confines the input power within the prescribed path. 3dB power dividers are designed with equal amplitudes and phases at all output ports. The proposed antenna array has a relative impedance bandwidth of 13.7% with an input reflection coefficient better than -10dB from the 65 GHz to 65.9 GHz frequency range.

AB - A navigational radar antenna comprising 4x 32 radiating elements fed by a ridge gap waveguide is presented. The antenna is designed at a millimeter-wave frequency band with a grid of horns making the aperture. The proposed structure has no electrical contact between the layers. There are a total of three metal layers, each separated by a small gap. A set of four horns forms an antenna unit cell which is fed by a single cavity-backed slot. The top metal layer is a radiating layer comprising a grid of 32 horn-based unit cells. The E-plane sectoral horn is used as a radiator and is optimized to reduce mutual coupling between adjacent horn elements. A cavity layer is added in the middle to increase the impedance bandwidth of the antenna. The complex distribution network based on the ridge gap waveguide lies at the bottom which feeds the array corporately. Circular Artificial Magnetic Conductor (AMC) pins are designed that confines the input power within the prescribed path. 3dB power dividers are designed with equal amplitudes and phases at all output ports. The proposed antenna array has a relative impedance bandwidth of 13.7% with an input reflection coefficient better than -10dB from the 65 GHz to 65.9 GHz frequency range.

KW - gap waveguide

KW - millimeter-wave

KW - ridge gap waveguide

KW - slot array

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DO - 10.1109/USNC-URSI52151.2023.10237437

M3 - Conference contribution

AN - SCOPUS:85172412161

T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)

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BT - 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings

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Shafiq S, He Y, Ali Q, Abbas SM, Houjun S. Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide. In 2023 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2023 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2023. p. 427-428. (IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)). doi: 10.1109/USNC-URSI52151.2023.10237437

Millimeter-Wave Navigational Radar Antenna with Radiating Horn Aperture Fed by a Gap Waveguide

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