Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Rao Shahid Aziz"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract In this paper, a novel negative refractive index metamaterial (NIM) is developed and characterized. The proposed metamaterial exhibits negative effective permittivity (ε effe ) and negative effective permeability (µ effe ) at millimeter wa
Externí odkaz:
https://doaj.org/article/f53d3ae8a5424914a687496d51c5698a
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract Novel designs of frequency selective surface (FSS) are presented for wideband applications in X, Ku and mmWave (millimeter Wave) bands. Two identical metallic layers of FSS are imprinted on both sides of the RO4003 substrate. The geometry pa
Externí odkaz:
https://doaj.org/article/d83ce28b80594c4dbeecc0bbbcd3422c
Publikováno v:
Electronics; Volume 12; Issue 12; Pages: 2630
5G NR (new radio) introduces the concept of massive MIMO (multiple-input multiple-output) technology, in which a larger number of antenna arrays are installed on the transceiver. Due to the increased number of antenna elements allocated close to each
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 32
Publikováno v:
IET Microwaves, Antennas & Propagation. 13:950-958
A novel electromagnetic (EM) lens with high gain, suppressed side-lobe level (SLL) and low profile is designed using thin planar metasurfaces. The proposed design consists of a source patch antenna and an EM lens based on two thin planar metasurfaces
Publikováno v:
IET Microwaves, Antennas & Propagation. 11:1483-1487
A new hybrid-antenna that is capable of wide-bandwidth operation and is small size is presented. The structure of the proposed antenna consists of a cylindrical dielectric resonator, metallic posts that are embedded in the resonator, and a rectangula
Publikováno v:
2019 8th Asia-Pacific Conference on Antennas and Propagation (APCAP).
A transmitting planar electromagnetic (EM) lens using frequency-selective surface (FSS) for millimeter-wave (mm-wave) communication is presented. The proposed EM lens composed of numerous FSS unit cells on a dielectric sheet. The topology of each cas
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 15:1987-1990
In this letter, a multiband full-metal-rimmed antenna covering 10 frequency bands for personal wireless communication terminals is presented. The design antenna is based on simple and effective techniques that are used for metal-rimmed smartphone app
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 14:1427-1430
A novel antenna with both horizontal and vertical polarizations is proposed for 1.7–2.1 GHz LTE band small cell base stations. Horizontal polarization is achieved by using the Vivaldi antennas at the main PCB board in azimuth plane, whereas the ver
Publikováno v:
Progress In Electromagnetics Research C. 57:193-203
This paper presents the improved isolation property of the signals among transmitter and receiver antennas. The separation wall is laid at the center of the antennas to improve the isolation level between them. The introduced separation wall has serr