Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Wen Geyi"'
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 18, Iss 6, Pp 402-412 (2024)
Abstract The authors extend the resonant modal theory (RMT) developed previously for a metal object to an arbitrary source region consisting of metals, dielectrics, or a combination of both. The influences of dielectrics on the fields are replaced by
Externí odkaz:
https://doaj.org/article/84d6f26213d34e06aceac5de381cfc32
Publikováno v:
IEEE Access, Vol 11, Pp 37911-37919 (2023)
In this paper, a beam shaping scheme is presented for the optimal design of base station antenna array. The antenna array consists of four linearly arranged dual-band dual-polarized antenna elements, and it is designed to cover the LTE frequency band
Externí odkaz:
https://doaj.org/article/80568a76e4044fdd90584a8f321222a6
Autor:
Wen Geyi
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 2, Pp 412-430 (2021)
Various methods have been proposed to control the electromagnetic fields in the near-or far-field region, one of which is to use antenna arrays. This paper reviews a technique, called the method of maximum power transmission efficiency (MMPTE), for t
Externí odkaz:
https://doaj.org/article/f30bf22dd8134905a46743c6d2515cc5
Publikováno v:
IEEE Access, Vol 9, Pp 45622-45631 (2021)
This paper presents a novel polarization-reconfigurable antenna based on the combination of circularly polarized (CP) modes, which is capable of changing its polarization states among arbitrary linear polarizations (LPs), left-handed circular polariz
Externí odkaz:
https://doaj.org/article/ce4572fd6b5446778ca1c8544bec95c7
Publikováno v:
IEEE Access, Vol 9, Pp 114945-114956 (2021)
This paper proposes a unified procedure for evaluating the resonant frequencies and the corresponding resonant modes for an arbitrary source region, based on the general expression for the difference between the stored magnetic and electric field ene
Externí odkaz:
https://doaj.org/article/4e424d92461a4663805538f5e1725ec4
Publikováno v:
IEEE Access, Vol 6, Pp 16092-16098 (2018)
Two novel designs of dual-mode beam-steerable array antennas are proposed for customer-premises equipment applications. To obtain the optimal distribution of excitations for the arrays, the gain and front-back ratio of the array systems are optimized
Externí odkaz:
https://doaj.org/article/c380f6471ec94b1eb0fdcf9b161a1b40
Publikováno v:
IEEE Access, Vol 6, Pp 29626-29636 (2018)
This paper presents a wideband antenna with omnidirectional radiation pattern for wireless capsule endoscopy (WCE) systems. The proposed antenna radiates as slot structure formed between a central copper cylinder and a copper strip attached to the in
Externí odkaz:
https://doaj.org/article/f0402763931946e394abcdcd836dcfc3
Autor:
Hucheng Sun, Wen Geyi
Publikováno v:
IEEE Access, Vol 5, Pp 20198-20206 (2017)
This paper presents a design method for wireless power transmission systems in unknown electromagnetic environments. In a wireless power transmission system, several antenna elements are used for power transmitting and one antenna is utilized for pow
Externí odkaz:
https://doaj.org/article/cf1e42cfbc14433ebb7cd884857879ce
Publikováno v:
AIP Advances, Vol 6, Iss 10, Pp 105010-105010-7 (2016)
In this paper, we demonstrate the viability of an energy receiving adapter in a 8×8 array form with high power reception efficiency with the resonator of artificial electromagnetic absorber being used as the element. Unlike the conventional reported
Externí odkaz:
https://doaj.org/article/0227d09a992c4fd0a1a0a23f56104517
Publikováno v:
International Journal of Antennas and Propagation, Vol 2016 (2016)
Three types of compact MIMO (Multiple-Input Multiple-Output) antenna systems with four and six elements for mobile handsets are studied in this paper. The MIMO antenna system is built on a FR4 substrate of the dimensions 136 mm × 68.8 mm × 1 mm. Th
Externí odkaz:
https://doaj.org/article/eb236170a4584be8b0a3a9918b31c18f