8 GHz Tunable CMOS Quadrature Generator using Differential Active Inductors
Why this work is in the frame
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Bibliographic record
Abstract
The design and implementation of a new 8 GHz tunable quadrature generator using a differential active inductor embedded in the local oscillator buffer are presented. The design has a much smaller form factor compared to the sequence asymmetric polyphase filter used as quadrature generator. It relaxes the coupling between the tuning of the output signal amplitude and quadrature phase and facilitates the application of automatic gain and phase control circuitry to compensate for process and temperature variations. It eliminates the need for additional buffering stages at the output of the quadrature generator and results in a considerable reduction in power consumption. A prototype implemented in 0.18 /spl mu/m CMOS technology, operating from a 1 V power supply and consuming 12 mW of power, features a measured gain of -2 dB and a worst case phase and amplitude mismatch of better than 1.5/spl deg/ and 1 dB respectively over a bandwidth of 100 MHz at 8 GHz. The design meets the potential specifications of 4G OFDM direct conversion receivers.
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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 it