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79 GHz multilayer series-fed patch antenna array with stacked micro-via loading

Aliakbari Abar, Hanieh LU orcid ; Mosalanejad, Mohammad ; Soens, Charlotte ; Vandenbosch, Guy A. E. and Lau, Buon Kiong LU (2022) In IEEE Antennas and Wireless Propagation Letters 21(10). p.1990-1994
Abstract
A wideband compact series-fed patch subarray is proposed for 79 GHz multiple-input multiple-output (MIMO) radar. The proposed subarray is, for the first time, loaded with stacked micro-vias (SMVs). Two sets of patches in the subarray are fed 180-degrees out-of-phase. A low-cost, high-resolution multilayer PCB technology, called “Any-Layer PCB”, is used to implement the SMVs, which cannot be done by standard HDI PCB technology. Moreover, the technology supports small SMVs on different layers, hence thick machine-drilled vias can be avoided. For comparison, a series-fed patch subarray with no SMV loading is designed. It is shown that SMV loading facilitates a larger overlap of the impedance and gain bandwidths, leading to a larger operating... (More)
A wideband compact series-fed patch subarray is proposed for 79 GHz multiple-input multiple-output (MIMO) radar. The proposed subarray is, for the first time, loaded with stacked micro-vias (SMVs). Two sets of patches in the subarray are fed 180-degrees out-of-phase. A low-cost, high-resolution multilayer PCB technology, called “Any-Layer PCB”, is used to implement the SMVs, which cannot be done by standard HDI PCB technology. Moreover, the technology supports small SMVs on different layers, hence thick machine-drilled vias can be avoided. For comparison, a series-fed patch subarray with no SMV loading is designed. It is shown that SMV loading facilitates a larger overlap of the impedance and gain bandwidths, leading to a larger operating bandwidth. The measured 10 dB impedance and 3 dB gain bandwidths are 15% and 9.6%, respectively. The sidelobe suppression is above 12.9 dB, and the maximum array gain is 12.67 dBi at 79.1 GHz. This subarray is suitable for MIMO radar, as its width is around 1/2-wavelength and the SMVs around it mitigate the crosstalk between the transmitting and receiving arrays. (Less)
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author
; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Advanced multilayer PCB, 79 GHz, impedance bandwidth, series-fed patch array, stacked micro-vias loading
in
IEEE Antennas and Wireless Propagation Letters
volume
21
issue
10
pages
5 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85133761877
ISSN
1548-5757
DOI
10.1109/LAWP.2022.3187764
project
Optimal MIMO Terminal Antennas for 5G and Beyond
language
English
LU publication?
yes
id
3c51eccb-d300-40c4-9b15-54638ddbda62
date added to LUP
2022-06-20 08:54:17
date last changed
2022-10-10 10:26:11
@article{3c51eccb-d300-40c4-9b15-54638ddbda62,
  abstract     = {{A wideband compact series-fed patch subarray is proposed for 79 GHz multiple-input multiple-output (MIMO) radar. The proposed subarray is, for the first time, loaded with stacked micro-vias (SMVs). Two sets of patches in the subarray are fed 180-degrees out-of-phase. A low-cost, high-resolution multilayer PCB technology, called “Any-Layer PCB”, is used to implement the SMVs, which cannot be done by standard HDI PCB technology. Moreover, the technology supports small SMVs on different layers, hence thick machine-drilled vias can be avoided. For comparison, a series-fed patch subarray with no SMV loading is designed. It is shown that SMV loading facilitates a larger overlap of the impedance and gain bandwidths, leading to a larger operating bandwidth. The measured 10 dB impedance and 3 dB gain bandwidths are 15% and 9.6%, respectively. The sidelobe suppression is above 12.9 dB, and the maximum array gain is 12.67 dBi at 79.1 GHz. This subarray is suitable for MIMO radar, as its width is around 1/2-wavelength and the SMVs around it mitigate the crosstalk between the transmitting and receiving arrays.}},
  author       = {{Aliakbari Abar, Hanieh and Mosalanejad, Mohammad and Soens, Charlotte and Vandenbosch, Guy A. E. and Lau, Buon Kiong}},
  issn         = {{1548-5757}},
  keywords     = {{Advanced multilayer PCB; 79 GHz; impedance bandwidth; series-fed patch array; stacked micro-vias loading}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{10}},
  pages        = {{1990--1994}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Antennas and Wireless Propagation Letters}},
  title        = {{79 GHz multilayer series-fed patch antenna array with stacked micro-via loading}},
  url          = {{https://lup.lub.lu.se/search/files/120379090/AWPL_accepted.pdf}},
  doi          = {{10.1109/LAWP.2022.3187764}},
  volume       = {{21}},
  year         = {{2022}},
}