Dual Band Radio Frequency Detector Based on the Simultaneous Excitation of Free and Reference Layer in a Magnetic Tunnel Junction
- Resource Type
- Periodical
- Authors
- Gupta, P.; Sisodia, N.; Bohnert, T.; Costa, J.D.; Ferreira, R.; Muduli, P.K.
- Source
- IEEE Electron Device Letters IEEE Electron Device Lett. Electron Device Letters, IEEE. 44(1):172-175 Jan, 2023
- Subject
- Engineered Materials, Dielectrics and Plasmas
Components, Circuits, Devices and Systems
Radio frequency
Magnetization
Magnetic tunneling
Oscillators
Bandwidth
Sensitivity
Detectors
Magnetic tunnel junction
microwave detectors
magnetic microwave devices
- Language
- ISSN
- 0741-3106
1558-0563
We demonstrate an energy efficient method of radio frequency (RF) detection for two bands ( ${S}+{C}$ and ${X}-$ band) using a magnetic tunnel junction-based nanopillar. For a carefully chosen geometry, two modes are simultaneously excited with the opposite sign of rectification voltage, enabling microwave band identification in a single device without the requirement for a DC bias. Micromagnetic simulations demonstrate that the opposite sign of rectification voltage is due to the simultaneous excitation of the free and reference layers. A method of enhancement of bandwidth in the ${X}-$ band is discussed.