Results 301 to 310 of about 98,456 (356)
Advanced Functional Materials, EarlyView.A bespoke multilayer thin film configuration has been designed, which overcomes the material dependency of conventional isotope exchange Raman spectroscopy (IERS). This universal IERS methodology is efficient, non‐destructive and provides additional structural information and time resolution, which can be further extended to various isotopic elements ...
Zonghao Shen +7 more
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Highly Selective Toward HER or CO2RR by Regulating Cu Single and Dual Atoms on g‐C3N4
Advanced Functional Materials, EarlyView.This systematic study provides insights into the design of electrocatalysts for hydrogen evolution reaction (HER) and carbon dioxide reduction (CO2RR). It serves as a useful guide for tuning catalyst architecture toward efficient multifunctional performance by varying synthetic parameters, demonstrating the impact of copper (Cu) species ranging from ...
Wan‐Ting Chen +9 more
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A high bandwidth dimension ratio compact super wide band-flower slotted microstrip patch antenna for millimeter wireless applications. [PDF]
HeliyonRao Devana VNK +7 more
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Tenth International Symposium on Ultrafast Phenomena and Terahertz Waves (ISUPTW 2021), 2021
We propose a novel patch antenna operating at 300 GHz. The antenna has a footprint of 500 μm × 500 &mum and a height of 198 &mum. The matching and radiation properties are studied. The simulation results show that the return loss (S11) is below -10 dB in the frequency range of 290.75 to 308.20 GHz and the relative bandwidth is 5.8%.
Yue Xu, Tao Dong, Xinyu He, Jingwen He
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We propose a novel patch antenna operating at 300 GHz. The antenna has a footprint of 500 μm × 500 &mum and a height of 198 &mum. The matching and radiation properties are studied. The simulation results show that the return loss (S11) is below -10 dB in the frequency range of 290.75 to 308.20 GHz and the relative bandwidth is 5.8%.
Yue Xu, Tao Dong, Xinyu He, Jingwen He
openaire +1 more source
Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting, 2002
A new type of annular patch antenna is presented. At variance of classical annular patch antenna the inner cylindrical wall is metallized. If radiates like a circular patch but has a smaller stored energy and the feed point can be chosen to have an easy matching. >
DI MASSA, Giuseppe, Mazzarella G.
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A new type of annular patch antenna is presented. At variance of classical annular patch antenna the inner cylindrical wall is metallized. If radiates like a circular patch but has a smaller stored energy and the feed point can be chosen to have an easy matching. >
DI MASSA, Giuseppe, Mazzarella G.
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Microwave and Optical Technology Letters, 1995
AbstractA new type of annular patch antenna is presented. At variance of classical annular patch antenna the inner edge is shorted by a cylindrical conducting wall. Therefore this antenna radiates as a circular patch but has a smaller stored energy, which allows a larger bandwidth, and the feed point can be chosen to have an easy matching.
DIMASSA G, MAZZARELLA, GIUSEPPE
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AbstractA new type of annular patch antenna is presented. At variance of classical annular patch antenna the inner edge is shorted by a cylindrical conducting wall. Therefore this antenna radiates as a circular patch but has a smaller stored energy, which allows a larger bandwidth, and the feed point can be chosen to have an easy matching.
DIMASSA G, MAZZARELLA, GIUSEPPE
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Multihole-coupled patch antennas
IEEE Antennas and Propagation Society International Symposium. 1996 Digest, 2002An accurate and numerically efficient model for the electromagnetic coupling between a microstrip line and a microstrip patch via small holes is presented. In the framework of the cavity model both the antenna excitation and the reflection coefficient on the line are computed taking into account all the modes in the cavity.
DI MASSA, Giuseppe +2 more
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IEEE Transactions on Antennas and Propagation, 1998
This paper presents the use of selective lateral etching based on micromachining techniques to enhance the performance of rectangular microstrip patch antennas printed on high-index wafers such as silicon, GaAs, and InP. Micromachined patch antennas on Si substrates have shown superior performance over conventional designs where the bandwidth and the ...
I. Papapolymerou +2 more
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This paper presents the use of selective lateral etching based on micromachining techniques to enhance the performance of rectangular microstrip patch antennas printed on high-index wafers such as silicon, GaAs, and InP. Micromachined patch antennas on Si substrates have shown superior performance over conventional designs where the bandwidth and the ...
I. Papapolymerou +2 more
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2018 IEEE International Workshop on Electromagnetics:Applications and Student Innovation Competition (iWEM), 2018
This article introduces the basic concepts of Kanji patch antennas. We use two novel L-probe-fed Guo-and Meng-shaped patches operating in circular polarization as examples. The main parameters of these symmetrical and asymmetrical shaped patch antennas were studied and optimized via computer-aided simulation.
Lingling Wang +5 more
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This article introduces the basic concepts of Kanji patch antennas. We use two novel L-probe-fed Guo-and Meng-shaped patches operating in circular polarization as examples. The main parameters of these symmetrical and asymmetrical shaped patch antennas were studied and optimized via computer-aided simulation.
Lingling Wang +5 more
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IEEE Transactions on Antennas and Propagation, 2004
Conventional microstrip patch antennas are printed with continuous solid copper shapes and ground planes. The general properties of meshed patches are presented in this paper where both the patch itself and the ground plane are meshed. The gain, cross-polarization, bandwidth and radiation patterns are discussed for different combinations of patch and ...
G. Clasen, R. Langley
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Conventional microstrip patch antennas are printed with continuous solid copper shapes and ground planes. The general properties of meshed patches are presented in this paper where both the patch itself and the ground plane are meshed. The gain, cross-polarization, bandwidth and radiation patterns are discussed for different combinations of patch and ...
G. Clasen, R. Langley
openaire +1 more source