Dual-band microwave detector based on magnetic tunnel junctions

Zhang, Like; Cai, Jialin; Fang, Bin; Zhang, Baoshun; Bian, Lifeng; Carpentieri, Mario; Finocchio, G.; Zeng, Zhongming

doi:10.1063/5.0014881

Cited by 12 publications

(7 citation statements)

References 42 publications

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“…The application of a proper magnetic field changes the sign of the rectification voltage, which makes the device a possible realization of a binary frequency shifting keying demodulation scheme, where the signal coding the bit "1" ("0") brings about a positive (negative) rectification voltage or vice versa. 30) Then, the detection voltage as a function of P RF for various dc bias currents is measured. We fix the value of dc bias current and measure the detection voltages at different RF input powers for other devices with similar HF ultra-sensitivity characteristics.…”

Section: Resultsmentioning

confidence: 99%

High-frequency ultra-sensitive spin-torque diode based on Co-rich magnetic tunnel junction with in-plane magnetized free layer

Zhang,

Zeng,

et al. 2023

Jpn. J. Appl. Phys.

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Spin-torque diodes (STDs) based on magnetic tunnel junctions (MTJs) are newly developing spintronic devices. However, so far, the highly sensitive STDs reported in experiments have a low detection frequency, generally lower than 2 GHz, which limits the application of STDs in HF fields. Here, we develop Co-rich MTJs to enhance in-plane magnetic anisotropy and demonstrate an in-plane magnetized HF ultra-sensitive STD. By selecting the proper field and using an injection locking mechanism, HF microwave detection close to 5 GHz can be realized with a sensitivity greater than 3700 mV mW−1. This result may pave the way to developing spin-torque microwave detectors that are HF and highly sensitive.

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Section: Resultsmentioning

confidence: 99%

High-frequency ultra-sensitive spin-torque diode based on Co-rich magnetic tunnel junction with in-plane magnetized free layer

Zhang,

Zeng,

et al. 2023

Jpn. J. Appl. Phys.

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“…A broadband response with a nonlinear frequency dependent amplitude can be also driven by an external field applied along the IP hard-axis of the MTJ. 10 Despite these first proof of concepts, the future challenges for broadband STDs are the increase of the rectification bandwidth in order to collect energy from more signals of environmental electromagnetic background at different frequencies (VSM, broadcast frequencies, etc. ), the reduction of the critical power needed to operate at smaller input microwave power, as well as the improvement of the conversion efficiency.…”

Section: Stds Working In Passive Regimementioning

confidence: 99%

“…The demodulation scheme can be realized either by two STDs having a proper resonant frequency or by only one STD with a dual-band resonant response, 10 with the benefit to have a more compact solution (see Fig. 1(b) for an example of detection curve).…”

Section: Roadmap For Active Std Applicationsmentioning

confidence: 99%

“…1(b) for an example of detection curve). 10 In the dual-band STD, the input signal excites one of the two modes corresponding to the two different frequencies of the STD and, since the rectified voltage has an opposite sign within the two bands, it is possible to reconstruct the sequence of bits. 30 The recent proof-of-concept of successful communication between a spin-torque nano-oscillator (STNO) and a passive vortex-based resonant STD (Fig.…”

Section: Roadmap For Active Std Applicationsmentioning

confidence: 99%

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Perspectives on spintronic diodes

Finocchio

Tomasello

Fang

et al. 2021

Applied Physics Letters

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Spintronic diodes are emerging as disruptive candidates for impacting several technological applications ranging from the Internet of Things to Artificial Intelligence. In this letter, an overview of the recent achievements on spintronic diodes is briefly presented, underling the major breakthroughs that have led these devices to have the largest sensitivity measured up to date for a diode. For each class of spintronic diodes (passive, active, resonant, non-resonant), we indicate the remaining developments to improve the performances as well as the future directions. We also dedicate the last part of this perspective to new ideas for developing spintronic diodes in multiphysics systems by combining 2-dimensional materials and antiferromagnets.

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“…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%

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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Dual-band microwave detector based on magnetic tunnel junctions

Cited by 12 publications

References 42 publications

High-frequency ultra-sensitive spin-torque diode based on Co-rich magnetic tunnel junction with in-plane magnetized free layer

High-frequency ultra-sensitive spin-torque diode based on Co-rich magnetic tunnel junction with in-plane magnetized free layer

Perspectives on spintronic diodes

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

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