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log-periodic array

ABSTRACT : Antenna is the most important element in wireless and wired communications systems. Antenna is one

ABSTRACT : Antenna is the most important element in wireless and wired communications systems. Antenna is one

... A log-periodic antenna (LP), also known as a log-periodic array or log-periodic aerial, is a multi-element, directional antenna designed to operate over a wide band of ...

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Impedance Characteristics of Log Periodic Antenna

Impedance Characteristics of Log Periodic Antenna

... Log Periodic array Antenna is one of the most important and commercially used antennas for ...the array above is considered and the analysis is carried out in the present ...

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SMART LOG PERIODIC DIPOLE ARRAY ANTENNA (3.1 GHZ-11.6 GHZ) FOR UWB APPLICATIONS

SMART LOG PERIODIC DIPOLE ARRAY ANTENNA (3.1 GHZ-11.6 GHZ) FOR UWB APPLICATIONS

... Printed log-periodic dipole antenna (PLPDA) is an example of UWB antenna which radiates in end-fire direction within ultra wide frequency ...The log-periodic array consists of several ...

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Analysis of Radiation Pattern of a Log Periodic Dipole Antenna in VHF Frequency

Analysis of Radiation Pattern of a Log Periodic Dipole Antenna in VHF Frequency

... the Log-Periodic Dipole Antenna (LPDA) has been usually employed. Log-periodic antennas fall under the class of frequency independent antennas offering bandwidth more than ...The ...

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DESIGN CONSIDERATION OF ARRAYS
FOR THE STUDIES OF RADIATION
PATTERN OF LOG PERIODIC DIPOLE
ARRAY ANTENNA AT DIFFERENT
FREQUENCIES

DESIGN CONSIDERATION OF ARRAYS FOR THE STUDIES OF RADIATION PATTERN OF LOG PERIODIC DIPOLE ARRAY ANTENNA AT DIFFERENT FREQUENCIES

... Log Periodic Dipole Array (LPDA) antennas are utilized in broadband communication in the VHF and UHF range and are usually used in case of wide band ...be periodic with every cycle being ...

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WIND-PROOF LOG PERIODIC DIPOLE ARRAY FOR CAPTURING SOLAR RADIO BURSTS

WIND-PROOF LOG PERIODIC DIPOLE ARRAY FOR CAPTURING SOLAR RADIO BURSTS

... the log-periodic array consists of dipole elements which are of different lengths and relative ...the array, are increased smoothly in dimension, being greater for each element than for the ...

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A Monolayer Multi-Octave Bandwidth Log-Periodic Microstrip Antenna

A Monolayer Multi-Octave Bandwidth Log-Periodic Microstrip Antenna

... the log-periodic microstrip antenna is based on frequency independent antenna principles [7], which, when applied to a periodic structure, result in scaling of the dimensions from period to period so ...

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DESIGN A LOG PERIODIC FRACTAL KOCH ANTENNA FOR MULTIBAND APPLICATIONS

DESIGN A LOG PERIODIC FRACTAL KOCH ANTENNA FOR MULTIBAND APPLICATIONS

... a log periodic fractal Koch antenna is ...of log periodic antennas that require large lengths and fractal curves that are known for excellent form factor ...

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Approximate method of analysis of log-periodic antennas with in-phase currents

Approximate method of analysis of log-periodic antennas with in-phase currents

... Known log-periodic antenna with sinusoidal current distribution along the radiators have a property of automatic currents "cut-off", ...asymmetrical log- periodic antenna with coaxial ...

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Design of Four Arm Log Periodic Antenna for MIMO Applications

Design of Four Arm Log Periodic Antenna for MIMO Applications

... arm log periodic antenna it can be ...arm log periodic antenna and the expected impedance is in the order of 133Ω [1] the input impedance line is of 50Ω, so it requires a matching network to ...

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A Printed Log-Periodic Tree-Dipole Antenna (Plptda)

A Printed Log-Periodic Tree-Dipole Antenna (Plptda)

... time. Main parameters and characteristics of the proposed antenna are discussed. A fabricated proof-of-concept prototype of the proposed antenna is etched on a FR4 substrate with a relative permittivity of 4.4 and volume ...

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1.
													A review on uwb microstrip patched log-periodic antenna

1. A review on uwb microstrip patched log-periodic antenna

... The study motivation for this paper used to be miniaturization of Log-Periodic Microstrip Antenna utilizing quarter- wavelength transmission line. We selected this antenna when you consider that of its ...

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Log-periodic behavior in a forest-fire model

Log-periodic behavior in a forest-fire model

... ior. The large model fires peak only when the density of trees on the grid exceeds the percolation threshold for tree clusters that span the grid. These spanning clusters are responsible for the peaks that we see in our ...

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A Novel Wind Proof Log-Periodic Dipole Array Antenna for the Study of Magnetic Field and Some Important Antenna Parameters in Azimuth and Elevation Pattern Analysis

A Novel Wind Proof Log-Periodic Dipole Array Antenna for the Study of Magnetic Field and Some Important Antenna Parameters in Azimuth and Elevation Pattern Analysis

... The radiating (active) region shifts all along the built up with varying frequency. The dipole elements whose wavelengths are λ/2 at the resonant frequency constitute the active region and almost all the antenna currents ...

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Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging application : a feasibility study

Application of conformal map theory for design of 2-D ultrasonic array structure for ndt imaging application : a feasibility study

... (2D) array element configurations, which enables full volumetric inspection of a component ...possible array layout configurations appropriate for use in ...2D array transducer, which consists of ...

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Comparing Radiation Characteristics of Fractal Arrays with Random and Periodic Arrays

Comparing Radiation Characteristics of Fractal Arrays with Random and Periodic Arrays

... random array performed better than the fractal ...fractal array and random array cause for the one to be more effective as the ...the array holds more elements, the random arrays perform ...

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Spectral-Domain Formulation of Electromagnetic Scattering from Circular Cylinders Located Near Periodic Cylinder Array

Spectral-Domain Formulation of Electromagnetic Scattering from Circular Cylinders Located Near Periodic Cylinder Array

... a periodic circular cylinder array with additional cylinders and formulates the electromagnetic scattering problem of this imperfectly periodic ...imperfectly periodic structures have ...

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Application with Implications of Log-Periodic Trends to Financial Bubbles:A Case for Econoplysics

Application with Implications of Log-Periodic Trends to Financial Bubbles:A Case for Econoplysics

... that log-periodicity may be associated with bubbles would thus provide a tool for their characterization and ...the log-periodic power law structures as one of the qualifying ...

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History and Advancement of the Family of Log Periodic Toothed Planer Microstrip Antenna

History and Advancement of the Family of Log Periodic Toothed Planer Microstrip Antenna

... A log periodic self complementary toothed planer probe feed antennas have been ...proposed. Log periodic zigzag toothed antenna and Log periodic crossed toothed an- tenna have ...

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A Single Broadband Antenna The Log Periodic Antenna

A Single Broadband Antenna The Log Periodic Antenna

... By using active log periodic antenna for a single broadband there are some inconveniences and problem that will be encountered. The first configuration has a single amplifier connected at the input of the ...

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