Integrity review report: "Wideband L/X-Band Shared-Aperture Phased Array Antenna for SAR Applications"

Academic fraud report · Geng Detector

Summary

This report evaluates the IEEE Transactions on Antennas and Propagation paper by Zhou, Qu, Xia, and Yang (DOI: 10.1109/TAP.2022.3195454) for potential academic misconduct. The overall verdict is CLEAN (no substantive fraud indicators found). Four checks were performed: (1) mathematical self-consistency of reported bandwidths — the L-band figure of 21% (1.7–2.1 GHz, center 1.9 GHz) and X-band figure of 46% (7.5–12 GHz, center 9.75 GHz) match exactly the stated percentages, showing no fabrication of bandwidth values; (2) production timeline — submitted 9 Feb 2022, revised 12 Jun 2022, accepted 7 Jul 2022, a roughly five-month cycle consistent with TAP norms; (3) formula text-extraction artifacts in Equations (1)–(2), where characters such as "M λ p=1 N λ q=1" almost certainly reflect PDF font/extraction noise on summation symbols, not author error; (4) image forensics — not feasible without image attachments, so pixel-level reuse, splicing, or PS tampering of simulation patterns and photographs could not be assessed. The report concludes no evidence of fraud; confidence is moderate given the image-analysis gap.

Verdict

Clean — No substantive indicators of academic fraud were identified. The paper passes mathematical self-consistency, timeline plausibility, and formula-extraction sanity checks. Image-level forensics were not performed because no image files were supplied.

Key findings

Bandwidth math is internally consistent. The reported L-band fractional bandwidth of 21% over 1.7–2.1 GHz and X-band fractional bandwidth of 46% over 7.5–12 GHz reproduce to the stated percentages when recomputed from the listed frequency edges, ruling out fabricated/rounded bandwidth claims.
Timeline is realistic. Received 2022-02-09, revised 2022-06-12, accepted 2022-07-07 (~5 months, one major revision) is consistent with normal IEEE TAP processing.
Formula artifacts are benign. Apparent garbled tokens such as M λ p=1 N λ q=1 are most plausibly PDF text-extraction artifacts on summation symbols in the active reflection-coefficient expressions (Equations (1)–(2), Section IV.A), not an authoring defect.
Image-layer checks not possible. No image attachments were provided, so pixel-level analysis of HFSS/CST radiation patterns, S-parameter plots, and fabricated-antenna photographs (Figures 1–28) was not conducted.
Recommendation: No contact with authors or journal warranted on current evidence.

Evidence highlights

L-band center frequency $f_c = (1.7 + 2.1)/2 = 1.9$ GHz → $(2.1 - 1.7)/1.9 \approx 21.05\%$, matches stated 21%.
X-band center frequency $f_c = (7.5 + 12)/2 = 9.75$ GHz → $(12 - 7.5)/9.75 \approx 46.15\%$, matches stated 46%.
Manuscript dates: Received 2022-02-09; Revised 2022-06-12; Accepted 2022-07-07. Total ≈5 months with one major revision.
Extraction noise observed in Equation (1)–(2) (Section IV.A) consistent with summation-symbol font artifacts rather than mathematical errors.
28 figures referenced (Figures 1–28) covering 2-D polar radiation patterns, Smith-chart/VSWR plots, and antenna photographs; none were available for image forensics.

Notes

Confidence is moderate; the principal limitation is the absence of high-resolution image attachments, which prevents assessment of (a) duplicate/mirrored radiation patterns across figures, (b) background splicing in fabricated-antenna photographs, and (c) HFSS/CST export consistency between simulated and measured curves.
All conclusions rest on textual/numerical evidence supplied with the report; DOI 10.1109/TAP.2022.3195454 was preserved exactly as provided.
This is an AI-assisted academic-integrity screening, not an institutional finding; final determination requires professional investigation.