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Exchange coupling between a ferromagnet (FM) and an anti-ferromagnet (AFM) in a FM/AFM system has attracted great interests in the last decades due to its great impact on spintronics applications. However, there is a lack of a complete physical picture due to the difficulty of probing the spin structure at the FM/AFM interface. Because the so-called spin frustration at the FM/AFM interface plays a...
The interface magnetic phenomenon, which forms the backbone of modern information technology, is of great interest for several decades. When two or more dissimilar materials with different long-range magnetic orderings and/or functionalities are combined together, it may give rise to new interfacial properties, such as the proximity effect [1]. The exchange coupling between two FM layers, as well...
The solid-state power-combining amplifier is a key for modern communication and radar system. In this paper, a new high isolation power divider/combiner circuit based on improved magic-tee circuit is put forward to investigate. The simulated and tested results show that it can achieve very good performance of high isolation. With using this new power divider/combiner circuit, a 29~31GHz band continuous-wave...
The development of ultra-compact integrated nanophotonic structures for communications, sensing, and signal processing has been of great interest lately. In this review paper, we first present the requirements for practical realization of integrated nanophotonic chips and then explain how these requirements are met by using low-loss waveguides and high quality resonators with careful engineering of...
Radial line helical array antenna is a novel antenna which realizes the directional radiation of circularly polarized high power microwave. This paper put forward a rectangular radial line helical array antenna (subarray), which uses short helical antenna as its radiation element, each helix is excited by the energy coupled by a probe from a radial line waveguide, especially it can be simply assembled...
We investigate the transmission spectra in a single-mode fiber excited by two acoustic waves with orthogonal perturbations using a novel composite piezoelectric transducer. Polarization-dependent spectra are observed due to coherent acousto-optic coupling between core-to-cladding modes.
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