Axial ratio
A Broadband Crossed Dipole Antenna with Wide Axial Ratio Beamwidth for Satellite Communications
... Abstract—This letter presents a broadband circularly polarized (CP) crossed dipole antenna with wide axial ratio (AR) beamwidth. The antenna consists of a crossed dipole fed by two baluns, a wideband feed ...
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Axial Ratio Enhancement of Equilateral Triangular-Ring Slot Antenna Using Coupled Diagonal Line Slots
... resulting in better (lowest) axial ratio is 24 mm. The modified ETRS is fed by deformed feed line which has 6 mm of width incorporated with upper and lower branches extending to the right (+ x direction). ...
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Design of Circularly Polarized Omnidirectional Bifilar Helix Antennas with Optimum Wide Axial Ratio Beamwidth
... wide axial ratio beamwidth resonant side-fed bifilar helix antennas that do not require a ground plane is ...give axial ratio (AR) close to one at higher values of turn angle with lower value ...
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A Novel Circularly Polarised Antenna with Wide Power and Axial-Ratio Beamwidth by Using Tilted Dipoles
... Abstract—A novel circularly polarised antenna with wide 3 dB axial-ratio beamwidth (ARBW) and half power beamwidth (HPBW) is proposed in this letter. By using two pairs of tilted dipoles, the ARBW of the ...
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Wideband Circularly Polaried Cross Bowtie Dipole Antenna with Axial-Ratio Bandwidth Enhancement
... Abstract—A wideband circularly polarized (CP) cross-dipole antenna is proposed for wireless applications. In this design, four parasitic square patches are utilized around the radiation patch to enhance the ...
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Design of a Wideband Circularly Polarized Cross-Dipole with Wide Axial-Ratio Beamwidth
... Abstract—A novel wideband circularly polarized (CP) cross-dipole with wide 3 dB axial-ratio (AR) beamwidth is presented. To generate CP radiation, the cross-dipole is fed by a Wilkinson power divider which ...
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The Axial Ratio of Planar Arrays with Random Element Errors
... In Section 2 we present the crossed dipoles array model for the planar array, and we define the errors in the feeding currents. In Section 3 we derive the approximate expression of the Axial Ratio (AR) as a ...
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A New Spiral Antenna with Improved Axial Ratio and Shorted Arm Length
... improved axial ratio at the same size as typical Archimedean spiral, and the problem of axial ratio degradation of power spiral antenna is also ...improved axial ratio also means ...
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Broadband dipole antenna for DOA systems applications
... This paper presents an antenna design with circular polarization; this is composed by orthogonal Bow- Tie dipoles placed in front of ground plane. The used geometry is similar to the approach presented in [10], where ...
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Circularly-Polarized Stacked Annular-Ring Microstrip Antenna
... GLONASS (L3). Aperture feeding has been used as an alternative technique to enhance the bandwidth and improve the input impedance of dual-band annular-ring microstrip antennas. A broadband feeding network has been used ...
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Design of Broadband Circular Polarization Truncated Horn Antenna with Single Feed
... In this paper, the design of a broadband CP truncated horn antenna has been presented. It does not require any complex feeding structure and uses only a coaxial feed extended with a simple electric field coupling probe. ...
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Analysis of Circularly Polarized Ring Slot Antenna Fed by Coupling Strip with Resistive Loading
... Abstract—An analysis for circularly-polarized (CP) ring slot antennas fed by a coupling strip with resistive loading is presented. By treating the antenna as a two-port circuit, the amplitudes and phases of two ...
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Design and Investigation of Circular Polarized Rectangular Patch Antenna
... Then from the simulation by Microwave Office software, the schematic diagram, as well as the 2D and 3D view of the dual –fed circular polarization microstrip antenna are shown. The values for return loss, bandwidths, ...
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A Stacked Broadband Circularly Polarized Microstrip Antenna
... This article presents the design of a innovative stacked structure of a wideband circularly polarized microstrip antenna. The circular patch design with L-probes feed technology and four reverse-phase feeding technology ...
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A Comparative Analysis of a Circularly Polarized Microstrip Patch Antenna with & Without U Slot
... The antenna geometry is shown in Figure 1. This antenna is designed to operate at around 1.521 GHz. The truncated square patch of length L and width W is printed on a microwave substrate (with dielectric constant 10.2) ...
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Density and Feeding Related Mortality of Musca domestica (Lin.) Larvae (Diptera: Muscidae)
... 80 and 100% w/v) and from each also, cotton wool was soaked and placed in 100mL beaker to feed 24 larvae within. In another set up, while maintaining different concentrations of milk feed and density of larvae at 24 per ...
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A Solution for Increasing Immunity Against the Influence of Ground Variations on a Boardintegrated GPS Antenna
... antenna was proposed in [5] to solve this difficulty. This antenna uses two orthogonal strip monopoles, printed directly on the associated circuit-board substrate, to generate a circular polarized characteristic. The ...
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Design and Analysis of Microstrip Patch Antenna for WLAN and Vehicular Communication
... Abstract—This paper presents the design and analysis of a dual-band circularly polarized (CP) microstrip patch antenna for WLAN and vehicular communication applications. In this antenna, an L-shaped slot is cut, and a ...
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Instability of dilative sand
... void ratio (Mooney et ...stress ratio of the CSRL is not affected by the initial stress state and the stress history prior to an undrained path, as established by Chu and Lo (1994) and Kato et ...
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Bending and Free Vibration Analysis of Nonlocal Functionally Graded Nanocomposite Timoshenko Beam Model Rreinforced by SWBNNT Based on Modified Coupled Stress Theory
... slenderness ratio, length of nanocomposite beam, material length scale parameter, nonlocal parameter, power law index, axial wave number, and Winkler and Pasternak coefficients on the natural frequency of ...
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