[PDF] Top 20 Analysis of Radiation Pattern of a Log Periodic Dipole Antenna in VHF Frequency

... building log periodic dipole antenna (LPDA) to monitor this occurrence in radio ...logarithmically periodic antennas have been extensively employed because of their frequency ... See full document

... broadband log-periodic dipole array antenna using Transmission Line Matrix Model is ...A log-periodic dipole antenna is analyzed using Transmission Line Matrix ... See full document

... and radiation properties of planar UWB (any ultra wide frequency band) dual-polarized ...require pattern stability over broad frequency bands. An analysis of the behaviour of three UWB ... See full document

... The radiation characteristics of an antenna in the presence of a lossy ground depend substantially on the infinite ground conductivity and in homogeneity ...Hertzian dipole with specified current ... See full document

... broadcast log-periodic dipole antenna (PLPDA) with a couple of notched bands is proposed for ultrawideband (UWB) ...tip-fireplace radiation pattern of the PLPDA is more stable ... See full document

... directional radiation patterns, which have been widely used in designing miniaturized ...printed log-periodic dipole antennas [12], ...fractal antenna is one of fractal electrodynamics’ ... See full document

... exact antenna model and therefore it cannot accurately estimate the behavior of the antenna inside a wide frequency ...wave analysis method in conjunction with an optimization method would be ... See full document

... of VHF dipole antenna for AIS system at different antenna gains (Yellow is 3 dB, red is 6 dB and blue is 9 dB) shown in Figure ...higher antenna gain the better radiating energy ... See full document

... - 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 ... See full document

... ABSTRACT: Antenna is the most important element in wireless and wired communications ...systems. Antenna is one type of transducer and it transforms electrical signals into radio waves and ...comparative ... See full document

... The research of Space Weather utilizing the nature of low-frequency solar radio bursts and their potential is enormous [3]. In Space Weather researches Solar radio monitoring will continue to play an indispensable ... See full document

... active log periodic antenna for a single broadband is to achieve the antenna that commonly using microstrip ...this antenna is also very well suited as a directional-antenna for ... See full document

... As depicted in Fig. 3, the original element is composed of a pair of rectangular patches printed on a substrate of size L × W. The length of the rectangular patch is Ld and space between them is Ws. This element can also ... See full document

... called antenna which use for transmit and receive signals such as microwave, radio or satellite ...signals. Antenna with broader operating bandwidth can send and receive much frequency bands of ... See full document

... microstrip dipole antenna with two reconfigurable parasitic elements employing PIN diodes are used in combination with a PRS to control the radiation pattern that can be switched from ... See full document

... bowtie antenna with the parasitic dipole and parasitic circular ...parasitic dipole and parasitic circular ring to effectively improve the radiation patterns, the proposed antenna can ... See full document

... An antenna acts as a transitional structure between the guiding device ...an antenna as given by Stutzman and Thiele follows the concept: “That part of a transmitting or receiving system that is designed to ... See full document

... a log-periodic behavior with a periodicity of ...present analysis, the dimension of the initial rectangle is taken to be 15 cm × ...the antenna consists of a single aperture of length 5 cm and ... See full document

... There has been a rising reliance on wireless communication to offer better functionality for products and services. This area increased the required the antennas used in wireless communication systems. In the beginning ... See full document

... reconfigurable antenna by numerous institutions, reconfigurable antenna according to its function is divided into frequency reconfigurable antenna [1], polarization reconfigurable ... See full document