Experimental Investigation of Performance, Reliability, and Cycle Endurance of Nonvolatile DC–67 GHz Phase-Change RF Switches
Bibliographic record
Abstract
This article reports high-performance and reliable phase change material (PCM) germanium telluride (GeTe)-based nonvolatile radio frequency (RF) switches. The highly miniaturized ultrawideband dc to 67 GHz millimeter-wave (mmWave) switches is developed in-house using a custom eight-layer microfabrication process. The switches are fully passivated and do not require any special packaging for integrating heterogeneously with other technologies. They are also amenable to monolithic integration with a wide range of RF devices on a single chip, such as phase shifters, impedance tuners, and attenuators, to name a few. The PCM GeTe-based RF switches are experimentally tested for their RF performance variation across the wafer, performance change at high temperature, high-power handling capability, third-order intercept (TOI) through the two-tone testing setup, and switching speed. The nonvolatile resistance state reliability of the PCM switches is experimentally investigated. The presented RF switches are cycled more than one million times, demonstrating reliable actuation operation with a figure of merit exceeding 14.5 THz. A detailed description of the experimental setup for measuring the switching speed, power handling capability, linearity, reliability, and cycle endurance assessment of the PCM switches is presented. The PCM switches developed are compared with the current state-of-the-art demonstrating a clear improvement in various aspects of the switch’s performance.
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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 | 0.001 |
| 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 | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
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.
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".