log-periodic dipole array antennas
DESIGN CONSIDERATION OF ARRAYS FOR THE STUDIES OF RADIATION PATTERN OF LOG PERIODIC DIPOLE ARRAY ANTENNA AT DIFFERENT FREQUENCIES
... Figure 5 gives the illustration of our simulated LPDA antennas at 300 MHz and 500 MHz respectively. The antennas were simulated using EZNEC software and it was considered under free space. The simulated ...
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SMART LOG PERIODIC DIPOLE ARRAY ANTENNA (3.1 GHZ-11.6 GHZ) FOR UWB APPLICATIONS
... Euclidean log-periodic dipole array into the log-periodic Koch-dipole array (LPKDA) ...LPD array, in which Carrel’s method is modified to include an ...
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Analysis of Radiation Patterns of Log-Periodic Dipole Array Using Transmission Line Matrix Model
... independent antennas, as a particular class of wideband antennas, were first studied by ...wideband antennas, such as log- periodic dipole antenna ...
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WIND-PROOF LOG PERIODIC DIPOLE ARRAY FOR CAPTURING SOLAR RADIO BURSTS
... static antennas to form a uniform wide angle beam is shown in ...two antennas form a uniform beam within the angle subtended by them based on the uniform gain power spectrum antenna pattern ...an ...
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Wideband Reconfigurable Log Periodic Patch Array
... Log periodic antennas have multiple elements, which resonate in a log periodic ...reconfigurable log periodic antenna is ...reconfigurable log periodic ...
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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
... The dipole elements whose wavelengths are λ/2 at the resonant frequency constitute the active region and almost all the antenna currents are focused in this region [5, ...the array which consist of ...
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Design of a Printed Log-Periodic Dipole Array for Ultra-Wideband Applications
... LPDA antennas operating both in the C, X and Ku bands can be found in the open literature (see, ...with antennas operating in the C band, or at lower frequencies [6, 7, 12, 13, 15, 16], and are focused on ...
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A Printed Log-Periodic Tree-Dipole Antenna (Plptda)
... an array to improve the gain, however, the feed network of the array is too difficult to solve; b) wide slot antennas [6, 7], including all kinds of wide-slot coupled feed antennas whose gains ...
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IWO based Synthesis of Log Periodic Dipole Array
... Log-periodic dipole arrays (LPDAs) are special linear arrays composed of parallel dipoles of different length ...the dipole lengths and radii as well as on their ...Yagi-Uda antennas, ...
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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 ...
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ABSTRACT : Antenna is the most important element in wireless and wired communications systems. Antenna is one
... The antennas are of various kinds and having different characteristics according to the need of signal transmission, gain, beam width and ...of antennas that can be differentiated with respect to their ...
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Bandwidth Enhancement of UWB Dual-Polarized Antennas
... The first concern regarding UWB antennas is the bandwidth. The IEEE standards [2] define the bandwidth of an antenna as the frequency range for which a characteristic (impedance, gain, efficiency, directivity or ...
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Design And Development Of Radial Line Slot Array Antenna At 28.00 GHZ
... The researcher used the techniques changes to decrease the range outdoor wireless and size of the antenna, increase gain and enables beam steering where beam steerable collinear dipole array will produced a ...
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Design of Printed Dipole Array for Omnidirectional Radiation Pattern
... first array in Figure ...the array is 60 mm, the substrate is a Teflon-glass with ...proposed array is realized in its center with a SMA ...the dipole are the same that the last section. Like ...
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Use of a Genetic Algorithm in Modelling Small Structures in Airframes : Characterising and modelling joints, seams, and apertures
... magnetic dipole moment array. A GA is applied to determine the dipole moment array that produces the same effect as the structure that is to be built into the ...
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Design of Four Arm Log Periodic Antenna for MIMO Applications
... The log-periodic antennas are very effectively useful to achieve large ...planar log- periodic antennas are having advantage of getting large bandwidth with careful design of ...
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2D array of cold electron nanobolometers with double polarised cross dipole antennas
... suppresses noise related to the Coulomb blockade due to the small area of the tunnel junctions and decreases the volume of a normal absorber for further improvement in noise performance. Besides this, the reliability of ...
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Wide Scanning Phased Array Antenna Using Printed Dipole Antennas with Parasitic Element
... phased array antenna has been developed that is capable of wide scanning angle with small deviation in antenna gain using printed dipole antennas with parasitic element, which may have the capability ...
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A Novel Meander Line Microstrip Log-Periodic Dipole Antenna for Dual-Polarized Radar Systems
... microstrip log-periodic dipole antenna for dual-polarized radar systems is presented and optimized, working in the reference frequency band 2–8 ...
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Log Periodic Antenna Design
... the Log Periodic Antenna circuit to get substrate thickness, width (W), patch length (L), spacing between m+h and (m+1)th element for scaling factor τ is designed and redesign until get the best ...
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