We revisit finite element method of modeling multi-scale photonic/electromagnetic devices via the proposed beam basis function,in combination with domain decompositions.Our approach ensures mathematical and physical c...
National Key R&D Program of China(Grant No.2021YFA1003400);National Natural Science Foundation of China(Grant No.62101233);Shenzhen Key Laboratory of EM Information(Grant No.ZDSYS20210709113201005)。
Ceramic waveguide filters have been popular in 5G wireless system applications.This article proposes an effective solution to enable the ceramic waveguide filter to be electrically tunable.In detail,a new varactor-tun...
Time-periodic form or expression is commonly observed in both natural and man-made phenomena across a wide range of scientific and engineering disciplines.In this article,we propose the theory of periodic sequence(TPS...
National Natural Science Foundation of China(Grant Nos.62071187,62071125,and 62301162);Natural Science Foundation of Fujian Province,China(Grant No.2023J01058);Industry-Education Cooperation Project in Fujian Province,China(Grant No.2022H6018);Fujian Province Major Special Topic Project(Grant No.2022HZ026007).
Large-element-spacing(LES)antenna arrays present an attractive proposition with their cost-effectiveness and sim-plified structures.However,they often encounter the challenge of high-level grating lobes.This paper pro...
National Natural Science Foundation of China(Grant No.U2141230).
For a large-scale array,its realized gain is always smaller than the summation of the element gains in isolation,which is the well-known gain paradox proposed by Hannan.To explain the paradox,embedded element efficien...
National Natural Science Foundation of China(Grant Nos.62222108 and 32261133623);China Scholarship Council(Grant No.202306840004).
The emergence of space-time modulated metasurface(STMM)as a novel platform for signal modulation holds significant promise for wireless secure communication,particularly within modern information technologies such as ...
This paper presents a comprehensive review of recent advances in reconfigurable electromagnetic(EM)surfaces.The discussion is organized around three key aspects of reconfigurable EM surfaces:unit cell engineering desi...
supported by the National Key R&D Program of China(Grant No.2023YFB2806700);the National Natural Science Foundation of China(Grant No.92365210);the Tsinghua Initiative Scientific Research Program,and the project of Tsinghua University-Zhuhai Huafa Industrial Share Company Joint Institute for Architecture Optoelectronic Technologies(JIAOT).
Optical spectrum analysis provides a wealth of information about the physical world.Throughout the development of optical spectrum analysis,sensitivity has been one of the major topics and has become essential in appl...
Deterministically achieving on-chip photon storage and retrieval is a fundamental challenge for integrated photonics.Moreover,this requirement is increasingly urgent as photon storage and retrieval is crucial to reali...
We explore the spatial directivity of radiating quantum source systems,which are defined as any generic source capable of producing photon emission and directing it to specific regions in space.We present a comprehens...