Positive-intrinsic-negative (PIN) diodes are widely used as limiters to protect sensitive components from damage in radio frequency (RF) receiver systems and communication front-ends. However, PIN diode limiters can be burnt out due to the microwave pulses coupling through the front-end of RF receiver systems. The damage processes and mechanisms in PIN limiters are undoubtedly important topics. Here, the damage accumulation process in PIN limiters induced by external microwave pulses is studied via the injection experiments. The relationship between the degree of damage (i.e., insertion loss) in the limiters and number of the injected pulses is reported. The maximum temperature criterion for burnout in PIN limiters is theoretically predicted and experimentally verified not accurate, and it is further observed that the insertion loss of the PIN diode limiter changes significantly only if more energy is injected into the limiter via microwave pulses.
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http://dx.doi.org/10.1038/s41598-020-58710-3 | DOI Listing |
Sci Rep
January 2025
THz-Photonics Group, Institut für Hochfrequenztechnik, Technische Universität Braunschweig, 38106, Braunschweig, Germany.
Space division multiplexing (SDM) with Hermite Gaussian (HG) modes, for instance, can significantly boost the transmission link capacity. However, SDM is not suitable in existing single mode fiber networks, and in long-distance wireless, microwave, THz or optical links, the far-field beam distribution may present a problem. Recently it has been demonstrated, that time domain HG modes can be employed to enhance the link capacity.
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January 2025
William H. Miller III Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218.
Introducing an experimental technique of time-resolved inelastic neutron scattering (TRINS), we explore the time-dependent effects of resonant pulsed microwaves on the molecular magnet CrFPiv. The octagonal rings of magnetic Cr atoms with antiferromagnetic interactions form a singlet ground state with a weakly split triplet of excitations at 0.8 meV.
View Article and Find Full Text PDFPhys Chem Chem Phys
January 2025
Purchase College SUNY, School of Natural and Social Sciences, 735 Anderson Hill Rd, Purchase, NY, 10577, USA.
For the first time, rotational constants along with centrifugal distortion constants have been determined for OThS and OCeS. The rotational spectra of these molecules and, in each case, one other isotopologue (OThS and OCeS) were produced utilizing a laser ablation sourcing technique incorporated into a chirped-pulse Fourier transform microwave spectrometer operating in the 8 to 18 GHz region of the electromagnetic spectrum. The bent structures determined are in very good agreement with theoretical calculations.
View Article and Find Full Text PDFJ Phys Condens Matter
December 2024
Department of Physics, Indian Institute of Technology Delhi, DEPRTMENT OF PHYSICS, IIT DELHI, HAUZ KHAS, New Delhi, Delhi, 110016, INDIA.
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View Article and Find Full Text PDFFundam Res
November 2024
Department of Plasma Bio Display, Kwangwoon University, Seoul 139701, South Korea.
Lung cancer continues to be the second most common cancer diagnosed and the main cause of cancer-related death globally, which requires novel and effective treatment strategies. When considering treatment options, non-small cell lung cancer (NSCLC) remained a challenge, seeking new therapeutic strategies High-power microwave (HPM) progressions have facilitated the advancement of new technologies as well as improvements to those already in use. The impact of HPM on NSCLC has not been investigated before.
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