Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Sing Wai Cheung"'
Autor:
Min Li, Sing Wai Cheung
Publikováno v:
IEEE Transactions on Vehicular Technology. 70:446-458
This paper presents a systematic and accurate calculation method to design the parasitic decoupling technique (PDT) for increasing antenna isolation in the multiple-element multiple-input multiple-output (M-MIMO) array. The mutual coupling among ante
Autor:
Sing Wai Cheung, Changfei Zhou
Publikováno v:
Journal of Electromagnetic Waves and Applications. 32:2086-2098
A dual wideband metasurface (MS)-based antenna operating in triple modes is proposed for circularly polarized (CP) operation and these two bands can be controlled independently. The antenna consists of a cross-slot antenna and an MS to generate a dua
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:3189-3194
A novel miniaturized dual-band dipole array antenna consisting of two parallel $1 \times 4$ subarrays for use in base stations operating in the digital cellular system (DCS) and wideband code division multiple access (WCDMA) bands is presented. Size
Publikováno v:
IEEE Transactions on Antennas and Propagation. 66:2610-2615
A low-profile dual-polarized dipole antenna using wideband artificial magnetic conductor (AMC) reflector with stable radiation pattern for use in 2G/3G/4G base stations operating from 1.7 to 2.7 GHz is presented. The antenna consists of a pair of cro
Autor:
Sing Wai Cheung, Changfei Zhou
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 17:368-372
In this letter, the high-order mode and ground-edge diffraction of a slot antenna are used to achieve a high gain. To inhibit the multilobes at the high-order mode, ground-edge diffraction is utilized to form a single main lobe by changing the size o
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:5061-5068
A low-profile dual-polarized patch antenna with stable radiation pattern for use in base stations operating from 1.7 to 2.7 GHz is presented. The antenna consists of a square patch radiator placed at 20 mm ( $0.14\lambda _{0}$ at the center frequency
Publikováno v:
Journal of Electromagnetic Waves and Applications. 32:204-214
A compact slot multiple-input multiple-output Antenna (CSMA) for smartphones with metal housing is proposed in this paper. The antenna has a slot radiator shared between two input ports and a T-sha...
Autor:
Changfei Zhou, Sing Wai Cheung
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:4268-4273
This communication proposes to use the 1- $\lambda $ resonant mode of slot radiator with single feeding for bandwidth enhancement. The impedance of a simple slot radiator is studied using computer simulation. Since operating the slot radiator in the
Autor:
Sing Wai Cheung, Di Wu
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:3756-3761
A cavity-backed annular slot antenna designed for the use in smartwatches in the 2.4-GHz Wi-Fi band is proposed. The cavity is metallic and has a cylindrical shape with a volume of $\pi \times 21^{2}\times10$ mm3. An annular slot is cut along the edg
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:2068-2073
A microwave lens designed using only 13 periodic dielectric sheets is proposed for gain enhancement of linearly polarized antenna. A 3-D-patch antenna with dual-fed and operating in the frequency band from 8–9 GHz is used for studies. The microwave