39 GHz Transmit/Receive Front-End-Module with Back-Off Efficiency Enhancement for 5G Communication
Bibliographic record
Abstract
This paper presents a transmit/receive (TX/RX) front-end module (FEM) featuring enhanced back-off (BO) efficiency and low noise figure (NF) for fifth-generation wireless infrastructure. Specifically, it proposes a TX/RX combiner that performs necessary Doherty's load modulation for enhancing the TX's efficiency in BO and carefully incorporates a switch in the RX side to maximize isolation and optimize the tradeoff between RX NF and TX power efficiency while maintaining a compact area. A circuit demonstrator is implemented using the 45 nm silicon-on-insulator CMOS process. Measurement results demonstrate 15 dB small signal gain, 20 dBm output power with 23% and 15% power added efficiency at peak and 6 dB BO in TX mode, and 20 dB small signal gain with a 4.5 dB NF and −16 dBm IP1dB while consuming only 32 mW in RX mode. The overall core size of the TX/RX FEM is 0.5×0.75 mm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| 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 | 0.000 | 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 teacher head, 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".