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A Quadrature VCO with Phase Noise Optimization for Wide Tuning Triple Band Frequency Generation

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Hechen Wang, Fa Foster Dai

Applied Physics · Submitted 17 Jul 2018

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The tuning-range enhancement technique enables the triple-band frequency generation in the range from 1.4GHz to 8.7GHz without penalizing oscillator's phase noise.

how it is stated · asserted 1.00 read the record →

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arXiv ID1807.06241 (version 1)
Pith IDPF2GOIZU, Pith's permanent record of this paper and its review
CitationFa Foster Dai, Hechen Wang. "A Quadrature VCO with Phase Noise Optimization for Wide Tuning Triple Band Frequency Generation." arXiv:1807.06241 (2018). https://pith.science/paper/PF2GOIZU
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Compiled by classifier-1.13.0 via TypeSafe API, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,724 input tokens.

What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.08 · human participants 0.01 · controlled comparison 0.05 · randomized assignment 0.01 · states quantitative result 0.99 · compares with prior results 0.08 · mentions code or data availability 0.02.

The abstract, sentence by sentence

arXiv listing abstract v1. Results and the main claim are underlined; .

This paper presents an analytical model on quadrature VCO (QVCO) phase noise performance as well as a wide-tuning triple band QVCO RFIC design. The phase noise model demonstrates the advantages of applying phase shift to quadrature coupling for QVCO phase noise reduction and bi-model oscillation elimination. As an example, we present a wide-tuning and low noise QVCO RFIC that contains a bottom-series QVCO with bipolar transistors for oscillation and NMOS transistors for coupling. The low-band and middle-band signals are generated from the QVCO outputs and its 2nd harmonics, while the high-band signal is obtained by frequency mixing. The tuning-range enhancement technique enables the triple-band frequency generation in the range from 1.4GHz to 8.7GHz without penalizing oscillator's phase noise. The proposed wide-band frequency generation RFIC is implemented in a 0.18 {\mu}m SiGe BiCMOS technology with 0.6mm2 area. The measured phase-noise is -125.2, -119.5 and -108.8dBc/Hz at 1 MHz offset for the three bands, respectively.

background contribution method result interpretation main claim

What the classifier reports for each sentence. The number is the probability it gave the label.
#sentencerolethe authors' own workstates the main conclusionstrength
s0 This paper presents an analytical model on quadrature VCO (QVCO) phase noise performance as well as a wide-tuning triple band QVCO RFIC design. contribution 1.00 0.92 0.16 asserted 0.99
s1 The phase noise model demonstrates the advantages of applying phase shift to quadrature coupling for QVCO phase noise reduction and bi-model oscillation elimination. interpretation 0.34 0.83 0.20 asserted 1.00
s2 As an example, we present a wide-tuning and low noise QVCO RFIC that contains a bottom-series QVCO with bipolar transistors for oscillation and NMOS transistors for coupling. contribution 0.55 0.92 0.07 asserted 1.00
s3 The low-band and middle-band signals are generated from the QVCO outputs and its 2nd harmonics, while the high-band signal is obtained by frequency mixing. method 0.95 0.85 0.06 asserted 1.00
s4 The tuning-range enhancement technique enables the triple-band frequency generation in the range from 1.4GHz to 8.7GHz without penalizing oscillator's phase noise. result 0.76 0.88 0.41 asserted 1.00
s5 The proposed wide-band frequency generation RFIC is implemented in a 0.18 {\mu}m SiGe BiCMOS technology with 0.6mm2 area. method 0.79 0.90 0.05 asserted 1.00
s6 The measured phase-noise is -125.2, -119.5 and -108.8dBc/Hz at 1 MHz offset for the three bands, respectively. result 1.00 0.95 0.20 asserted 1.00

What kind of paper the classifier reports this is: method or tool 0.87 · evidence from observation or experiment 0.98.

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Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. Every number in the measurements table is the authors', checked by code. Record as JSON

The paper
Original abstract

This paper presents an analytical model on quadrature VCO (QVCO) phase noise performance as well as a wide-tuning triple band QVCO RFIC design. The phase noise model demonstrates the advantages of applying phase shift to quadrature coupling for QVCO phase noise reduction and bi-model oscillation elimination. As an example, we present a wide-tuning and low noise QVCO RFIC that contains a bottom-series QVCO with bipolar transistors for oscillation and NMOS transistors for coupling. The low-band and middle-band signals are generated from the QVCO outputs and its 2nd harmonics, while the high-band signal is obtained by frequency mixing. The tuning-range enhancement technique enables the triple-band frequency generation in the range from 1.4GHz to 8.7GHz without penalizing oscillator's phase noise. The proposed wide-band frequency generation RFIC is implemented in a 0.18 {\mu}m SiGe BiCMOS technology with 0.6mm2 area. The measured phase-noise is -125.2, -119.5 and -108.8dBc/Hz at 1 MHz offset for the three bands, respectively.

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