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Efficient Synthesis of Angular Selective Surfaces Based on Accurate Equivalent Circuit Analysis

Qin, Tao LU ; Lin, Xian Qi ; Yao, Yao ; Liu, Yong ; Liu, Hao ; Hao, Peng and Mei, Peng (2023) In IEEE Transactions on Microwave Theory and Techniques 71(6). p.2625-2638
Abstract

A new efficient synthesis method of angular selective surfaces (ASSs) based on the accurate equivalent circuit model is proposed. The angular dispersion of different components under oblique incidence is modeled by virtual lumped elements in the angular domain. The processes of obtaining the equivalent circuit for substrates, electrically small grids and patch arrays are presented in detail. The synthesized circuits are simple and accurate. Full-wave simulations are carried out to obtain the angular dispersion of different structures, and the calculated results are in good agreement with those of the equivalent circuit. A third-order ASS with bandpass response and a second-order ASS with a tunable bandwidth are given as design examples.... (More)

A new efficient synthesis method of angular selective surfaces (ASSs) based on the accurate equivalent circuit model is proposed. The angular dispersion of different components under oblique incidence is modeled by virtual lumped elements in the angular domain. The processes of obtaining the equivalent circuit for substrates, electrically small grids and patch arrays are presented in detail. The synthesized circuits are simple and accurate. Full-wave simulations are carried out to obtain the angular dispersion of different structures, and the calculated results are in good agreement with those of the equivalent circuit. A third-order ASS with bandpass response and a second-order ASS with a tunable bandwidth are given as design examples. The implemented second-order ASS shows the 0.33 to 0.52 tunable bandwidth in the angular domain. The transmission loss is better than 1.2 dB when the incidence angle is 65°-77°. The simulation results and calculated results are in good agreement with the measured results.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Angular selective surface (ASS), equivalent circuit, frequency selective surface, meta-surface, spatial angular filter
in
IEEE Transactions on Microwave Theory and Techniques
volume
71
issue
6
pages
14 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85147225262
ISSN
0018-9480
DOI
10.1109/TMTT.2022.3232109
language
English
LU publication?
yes
id
3c746543-dd25-4974-9602-9a6b68911b5f
date added to LUP
2024-01-12 12:47:57
date last changed
2024-01-12 12:49:48
@article{3c746543-dd25-4974-9602-9a6b68911b5f,
  abstract     = {{<p>A new efficient synthesis method of angular selective surfaces (ASSs) based on the accurate equivalent circuit model is proposed. The angular dispersion of different components under oblique incidence is modeled by virtual lumped elements in the angular domain. The processes of obtaining the equivalent circuit for substrates, electrically small grids and patch arrays are presented in detail. The synthesized circuits are simple and accurate. Full-wave simulations are carried out to obtain the angular dispersion of different structures, and the calculated results are in good agreement with those of the equivalent circuit. A third-order ASS with bandpass response and a second-order ASS with a tunable bandwidth are given as design examples. The implemented second-order ASS shows the 0.33 to 0.52 tunable bandwidth in the angular domain. The transmission loss is better than 1.2 dB when the incidence angle is 65°-77°. The simulation results and calculated results are in good agreement with the measured results.</p>}},
  author       = {{Qin, Tao and Lin, Xian Qi and Yao, Yao and Liu, Yong and Liu, Hao and Hao, Peng and Mei, Peng}},
  issn         = {{0018-9480}},
  keywords     = {{Angular selective surface (ASS); equivalent circuit; frequency selective surface; meta-surface; spatial angular filter}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{6}},
  pages        = {{2625--2638}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Microwave Theory and Techniques}},
  title        = {{Efficient Synthesis of Angular Selective Surfaces Based on Accurate Equivalent Circuit Analysis}},
  url          = {{http://dx.doi.org/10.1109/TMTT.2022.3232109}},
  doi          = {{10.1109/TMTT.2022.3232109}},
  volume       = {{71}},
  year         = {{2023}},
}