Compact In-Band Full-Duplex Implantable Antenna for Wireless Capsule Endoscopy
Bibliographic record
Abstract
This study presents an ultraminiaturized implantable in-band full-duplex (IBFD) antenna, designed for wireless capsule endoscopy (WCE) applications. Through the integration of semicircular slots and shorting pins, the antenna achieves a small volume of 7.17 mm3 ($\pi \times $(3 mm)$^{2} \times 0.254$mm), surpassing the state-of-the-art in compactness. Simulations of the proposed design are conducted within a human body phantom to demonstrate the antenna’s operation at 2.45 GHz. Radiation patterns from both ports are nearly omnidirectional, and an isolation level of greater than 28 dB is achieved. Our results indicate that the antenna can establish reliable wireless communication over distances exceeding 8 m, with a 10-dB margin at both ports. The specific absorption rate (SAR) values at 2.45 GHz are found to be 29.7 W/kg at 1 W input power. Experimental validation using minced pork demonstrated a good agreement with simulation results.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.001 |
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.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".