Results 21 to 30 of about 236,478 (267)
IEEE Access, 2020 A new compact printed monopole antenna is presented in this paper. An open-loop hexagonal radiator excited by a microstrip feed line, which is printed on top of the substrate, which is FR4 type, while on another side, a partial ground plane is fixed and ...
Mohammed A. Al-Mihrab +2 more
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A New Compact Size Microstrip Patch Antenna with Irregular Slots for Handheld GPS Application [PDF]
Engineering and Technology Journal, 2008 A new reduced size single probe fed microstrip patch antenna with irregular slitshas been presented to be used as a receiving antenna for Global Positioning Systems(GPS) integrated with cellular handheld mobile wireless systems.
Jawad K. Ali
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Selection rules and ratios for axial couplings [PDF]
Il Nuovo Cimento A, 1972 We study the predictions for the axial couplings following from the use of the mixing operatorU(Z), previously introduced to tilt the axial charges ofSU6 in the physical ones. The quantum number (−1)L+L3, whereL andL3 are theO3 angular momentum and its third component, is shown to be conserved.
F. Buccella +3 more
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Design of a Circularly Polarized Planar Monopole Antenna with a Simplified Radiator Structure for UWB Applications [PDF]
Journal of Electromagnetic Engineering and ScienceThe demand for wideband circularly polarized (CP) antennas in wireless communication applications has been increasing, given that it offers reliable signals with reduced interference.
Seungyong Park +3 more
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Improved Model of the Circularly Polarized Patch Antenna Array at 24 GHz for Radar Applications
Telfor Journal, 2019 The paper presents the improved design of the novel circularly polarized patch antenna array operating at ISM band 24.05-24.25 GHz. The antenna array consists of 24 identical truncated patches which are serially fed through the microstrip line.
I. Radnovic, B. Jokanovic, A. Boryssenko
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Wideband Circularly Polarized Antenna With Reconfigurable 2-Dimensional Axial Ratio Beamwidth
IEEE Access, 2021 This paper proposes a wideband circularly polarized antenna with a reconfigurable 2-dimensional axial ratio. For mobile satellite communication, the low profile CP antenna with wide axial ratio scanning and a wide frequency bandwidth is essential.
Jeong-Wook Kim +5 more
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IEEE Access, 2018 We present a simple and useful closed-form expression to compute antenna input impedance and the axial ratio of a circular patch antenna with perturbation segments.
Nu Pham +2 more
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Tunable square waveguide polarizer with irises and posts
Технічна інженерія, 2020 Polarization signal processing is widely used in modern information and telecommunication systems for various purposes. Signal polarization processing is carried out in polarization-adaptive antenna systems.
А.V. Bulashenko +3 more
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A Compact Single-Feed Patch Antenna with Frequency and Polarization Diversity [PDF]
Engineering and Technology Journal, 2019 A new compact single feed square ring patch antenna using meandered 4λ transformer is designed, for frequency and polarization diversity. The proposed antenna is constructed from a square ring patch antenna, and two orthogonal meandered cascaded 4λ ...
Fayyadh Ahmed
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Experimental study on mechanical properties of Xiaojihan coal samples under plastic flow
Meikuang Anquan, 2021 In order to study the plastic flow properties and hysteresis characteristics of Xiaojihan main water-bearing coal seam under the influence of mining, the axial cyclic loading and unloading tests under different confining pressures were carried out. When
YOU Wenqiang, GUO Jingna, WANG Guanghui
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