Photonics-Based RF Signal Phase Detector With Wide Operating Frequency Range and High Resolution

Chen, Hao; Chan, Erwin H. W.

doi:10.1109/jphot.2021.3066992

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…[13] obtained a resolution of 0.8 • using the superheterodyne method, and a traditional commercial phase detector can achieve the phase resolution of about 1 • . [27] Output of phase detector (V)…”

Section: Resultsmentioning

confidence: 99%

An all-optical phase detector by amplitude modulation of the local field in a Rydberg atom-based mixer

et al. 2022

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Recently, a Rydberg atom-based mixer was developed to measure the phase of a radio frequency (RF) field. The phase of the signal RF (SIG RF) field is down-converted directly to the phase of a beat signal created by the presence of a local RF (LO RF) field. In this study, we propose that the Rydberg atom-based mixer can be converted to an all optical phase detector by amplitude modulation (AM) of the LO RF field; that is, the phase of the SIG RF field is related to both the amplitude and phase of the beat signal. When the AM frequency of the LO RF field is the same as the frequency of the beat signal, the beat signal will further interfere with the AM of the LO RF field inside the atom, and then the amplitude of the beat signal is related to the phase of the SIG RF field. The amplitude of the beat signal and the phase of the SIG RF field show a linear relationship within the range of 0 to π/2 when the phase of the AM is set with a difference π/4 from the phase of the LO RF field. The minimum phase resolution can be as small as 0.6 degree by optimizing the experimental conditions according to a simple theoretical model. This study will expand and contribute to the development of RF measurement devices based on Rydberg atoms.

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Section: Resultsmentioning

confidence: 99%

An all-optical phase detector by amplitude modulation of the local field in a Rydberg atom-based mixer

et al. 2022

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Microwave Phase Detector Based on Optical Frequency Translation and Downconversion

Huang

Chan

2022

J. Lightwave Technol.

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Photonic-assisted RF phase difference detector with full 0° to 360° phase detection capability

Li,

Chan,

Liu

et al. 2024

Appl. Opt.

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A microwave photonic structure for detecting the phase difference of two radio frequency (RF) signals is presented. It is capable of determining the RF signal phase difference unambiguously over the full 0° to 360° range, which overcomes the 0° to 180° phase detection range limitation in the reported structures. The proposed RF phase detector is designed to generate two DC voltages with amplitudes depending on the phase difference of the two input RF signals. An RF signal phase difference in the 0° to 360° range can be obtained from the ratio of the two system output DC voltages. The proposed RF phase detector has a wide operating frequency range, as it is free of microwave components. It overcomes the drawbacks of complex structures, large phase detection errors, limited phase detection range, and limited operating frequency range in the reported photonics-based RF phase detectors. Experimental results are presented that demonstrate 0° to 360° phase difference detection with errors below ±3∘ for different input RF signal frequencies.

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Photonics-Based RF Signal Phase Detector With Wide Operating Frequency Range and High Resolution

Cited by 3 publications

References 16 publications

An all-optical phase detector by amplitude modulation of the local field in a Rydberg atom-based mixer

An all-optical phase detector by amplitude modulation of the local field in a Rydberg atom-based mixer

Microwave Phase Detector Based on Optical Frequency Translation and Downconversion

Photonic-assisted RF phase difference detector with full 0° to 360° phase detection capability

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