log-periodic antenna array
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 ...
11
Impedance Characteristics of Log Periodic Antenna
... an antenna in the presence of a lossy ground depend substantially on the infinite ground conductivity and in homogeneity ...length antenna should be considered. In the present analysis, the array is ...
8
1. A review on uwb microstrip patched log-periodic antenna
... a log-periodic formation of rectangular fractals is offered for broadside radiation in UWB offerings, where square slots are scale down within the square ...of log-periodic antenna is ...
8
Wideband Reconfigurable Log Periodic Patch Array
... the H-plane axis. The feed line is enclosed with a screening box size of h b × l b , which is important to reduce back radiation. The box size (h b is 4.18 mm and l b is 12.7 mm) is designed so that the cut off frequency ...
16
IWO based Synthesis of Log Periodic Dipole Array
... minimum antenna length and maximum gain by employing the Non-dominated Sorting Genetic Algorithm II ...parasitic array of four 12-element LPDAs is optimized in [18] under constraints for gain close to 8dBi ...
6
DESIGN CONSIDERATION OF ARRAYS FOR THE STUDIES OF RADIATION PATTERN OF LOG PERIODIC DIPOLE ARRAY ANTENNA AT DIFFERENT FREQUENCIES
... transmission lines can be utilized. The terminals of the smallest dipole from the input point of the array and the two-wire transmission line joins all the other dipoles. It has been seen that maximum radiation ...
9
A Printed Log-Periodic Tree-Dipole Antenna (Plptda)
... of antenna is omni-directional antenna with low gain, which could be arranged as an array to improve the gain, however, the feed network of the array is too difficult to solve; b) wide slot ...
14
WIND-PROOF LOG PERIODIC DIPOLE ARRAY FOR CAPTURING SOLAR RADIO BURSTS
... A spectrum analyzer of good frequency resolution (RBW = 3 kHz) capable of covering the frequency range 50 MHz to 300 MHz is used for the purpose suitably. The role of the master computer is to select the proper ...
9
A Monolayer Multi-Octave Bandwidth Log-Periodic Microstrip Antenna
... series-fed log-periodic microstrip antennas were first introduced for bandwidth enhancement [9, ...an array of rectangular microstrip patches was presented for ultrawide band (UWB) ...
8
Design of a Printed Log-Periodic Dipole Array for Ultra-Wideband Applications
... the antenna using a via-hole inside the ...the antenna performances, an additional mirror coaxial cable, soldered in the top layer of the array, can be ...
12
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
... - Log Periodic Dipole Array (LPDA) is comprised of two crossed logarithmic periodic dipole antennas, arranged in north-south and east-west ...important antenna parameters in Azimuth and ...
6
A Review On UWB Log Periodic Antenna
... bandwidth antenna is formed through software of log periodic technique to the sequence fed electromagnetically coupled rectangular overlaid dielectric resonator ...This Log Periodic DRA ...
9
Analysis of Radiation Patterns of Log-Periodic Dipole Array Using Transmission Line Matrix Model
... line antenna and Gaubau antennas, which are found to have small size with superior performance and ...the antenna with changes in shape and drilled holes and so ...
9
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 ...
7
A Broadband Planar Modified Quasi-Yagi Using Log-Periodic Antenna
... quasi-Yagi antenna using a two-element log- periodic dipole array as a driven element is ...two-element log-periodic dipole array, a simple microstrip to stripline ...
8
On the Miniaturization of Log Periodic Koch Dipole Antenna Using Split Ring Resonators
... The real part of the impedance is almost 50 ohm at resonant frequencies. The imaginary part of input impedance is almost zero at resonant frequencies. The frequency variation of input impedance is not drastic for the ...
7
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 ...
5
History and Advancement of the Family of Log Periodic Toothed Planer Microstrip Antenna
... This paper presents the family of logarithmically periodic toothed planer antennas. In this the dimensions of the succes- sive sections were increased in geometric progression for a wide bandwidth usage. A band ...
6
PERFORMANCE OF MAIN BEAM STEERING AT DIFFERENT ANGLE USING GENETIC ALGORITHM.Pradeep Malviya, Prof. Giriraj Prajapati, Prof. A. C. Tiwari, Mr. Vijit Mishra
... LINEAR ARRAY FOR SLL REDUCTION AND PHASE STEERING This section gives the simulation result for SLL reduction and phase steering a different angle by GA ...The antenna model consists of N elements equally ...
7
The Elliptic Gaussian Beam Scattering on Phased Antenna Array with Rectangular Waveguides
... various periodic structures were investigated by a number of authors ...The array is made of a plane perfectly conducting screen of a finite thickness with rectangular cross-section waveguide ...
13