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Beam Synthesis of a C-Band Circularly Polarized Dual-Reflector Antenna Using a Reconfigurable Subreflector

2021· article· en· W3205328396 on OpenAlex
Marzieh Mehri Dehnavi, Jean-Jaques. Laurin

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldEngineering
TopicAntenna Design and Optimization
Canadian institutionsPolytechnique Montréal
FundersMinnesota Department of Agriculture
KeywordsOpticsReflector (photography)Classification of discontinuitiesParticle swarm optimizationPhase (matter)DiagonalBeam (structure)Antenna (radio)Materials sciencePhysicsComputer scienceTelecommunicationsMathematicsGeometryAlgorithm

Abstract

fetched live from OpenAlex

In this work, the phase-only synthesis technique is used for beam shaping of a C-Band circularly polarized dual-reflector antenna. The synthesis relies on Particle Swarm Optimization (PSO) by using the element factors of a 100-elements reflectarray. The optimized results suffer from discontinuities in the reflectarray phase distribution, leading to degradation of the far-field patterns. This work proposes a solution to force a continuous phase distribution among the reflectarray surface during the optimization process. The beam scanning capability of the proposed algorithm is investigated by scanning the beam in the uv plane, by −0.05 and −0.1 along the main axes, and by 0.07 along a 45-degree diagonal. It is shown that the phase smoothing condition leads to significant improvement in the quality of the synthesized beams.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.816
Threshold uncertainty score0.875

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.022
GPT teacher head0.227
Teacher spread0.205 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Quick stats

Citations1
Published2021
Admission routes1
Has abstractyes

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