Phase Shift and Amplitude Array Measurement System Based on 360° Switched Dual Multiplier Phase Detector

Pérez-Díaz, B.; Arana, V.; Cabrera-Almeida, Francisco; Dorta-Naranjo, B. Pablo

doi:10.1109/tim.2021.3120132

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…[ 5 ] is about a phase detector based on a graphene transistor, and Ref. [ 7 ] is about a phase detector based on a multiplier and fabricated with printed circuit board. Refs.…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…In the aspect of phase-detection range, a common approach to realize −180~180° non-ambiguous phase detection is by using two or more channels to provide extra phase difference between different channels, as provided in Refs. [ 7 , 11 ], which would lead to a large occupied area. It should also be mentioned that, for the aim of improved power capacity and linearity range, the presented phase detector only couples a small portion of input power for phase detection, thus it is reasonable that the sensitivity is smaller than other detectors.…”

Section: Experiments and Discussionmentioning

confidence: 99%

“…The basic implementation method for phase angle measurement is based on evaluating the relative phase shift between the test signal and the reference signal in two different channels and converts the phase information into other kinds of signals that are easy to detect and read out. To date, many designs for phase measurements have been proposed through solid-state circuits with diodes, multipliers, and mixers [ 4 , 5 , 6 , 7 ], and magnetic tunnel junctions [ 8 , 9 ], et al…”

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of a Hybrid-Type RF MEMS Phase Detector in X-Band

Han

Ding

2022

Micromachines

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In this paper, we have designed, analyzed, and characterized a hybrid-type MEMS device for X-band phase shift measurement. The signal related to a phase shift of the inputs is fractionally in-line coupled by a MEMS beam and delivered to a thermoelectric power sensor, where the phase is ultimately converted into DC voltage output. With the hybrid of the MEMS beam and the thermoelectric power sensor, both in-line detection process and phase-DC voltage conversion is reserved, which is a benefit for large power capacity, good linearity property, and high-level integration density. In order to get a deep insight into the physical mechanisms involved in the phase detection process, a comprehensive analysis model is presented. The beam is modeled as a precise RLC circuit component, where the capacitance is related to the input power. The fabrication is compatible with GaAs monolithic microwave integrated circuit (MMIC) technology. Experimental results show that return loss is smaller than −11.3 dB and isolation is better than −9.3 dB over X-band. Phase shift detection from 0 to 180 degrees is verified for a large power range of 200–1600 mW (23–32 dBm). The perfect linearity property of the phase-detection sensitivity is demonstrated in the same power range. Low intermodulation distortion is also confirmed through measurement. It is revealed from the comparison between this work and other published results in the literature that this presented hybrid-type structure shows superiorities in both power handling ability and phase-detection linearity. It can be adopted in medium power signal applications with a high level of integration.

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“…[ 5 ] is about a phase detector based on a graphene transistor, and Ref. [ 7 ] is about a phase detector based on a multiplier and fabricated with printed circuit board. Refs.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Section: Experiments and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design and Analysis of a Hybrid-Type RF MEMS Phase Detector in X-Band

Han

Ding

2022

Micromachines

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Simultaneous Perfect Anomalous Reflection and Angle of Arrival Sensing in Reconfigurable Intelligent Surfaces

Movahediqomi,

Li,

Ptitcyn

et al. 2024

Advanced Optical Materials

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This work introduces reconfigurable Intelligent surfaces (RISs) designed to simultaneously reflect single or multiple incident waves toward one or more receivers and sense their angles of arrival (AoA). Anomalous reflection with strongly suppressed parasitic scattering is achieved through an in situ optimization of either the currents flowing on array elements or the far field in the receiver direction. The suppression of parasitic scattering allows to accurately and without additional measurements or computations detect the angles of arrival of the illuminations through the spatial Fourier transform of the optimized current distribution through the controllable reactive loads. Unlike other recently proposed methods, the proposed scheme of integrated sensing and communication (ISAC) does not require any pre‐computed data sets and works for an arbitrary number of simultaneous illuminations. As a proof of principle, the design and analysis of several reconfigurable intelligent surfaces consisting of an array of loaded wires above a ground plane are conducted using full‐wave simulations.

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