[PDF] Top 20 Wideband Reconfigurable Log Periodic Patch Array

... Log periodic antennas have multiple elements, which resonate in a log periodic ...frequency reconfigurable log periodic antenna is ...on reconfigurable log ... See full document

... microstrip patch antenna array but little work has been done on logperoidic microstrip patch antenna arrays and log periodic DRA structures with different feeding ...proposed log ... See full document

... polarization reconfigurable antenna It is a suitable for mobile satellite communications and for wireless communications is ...A reconfigurable slot ring antenna is presented [4] which can work on two ... See full document

... two-dimensional periodic metal cells, similar to the AMC structure design in ...four patch elements with gap g between two adjacent cells, and each group has the same ...square patch truncated by two ... See full document

... Frequency independent antennas, as a particular class of wideband antennas, were first studied by Rumsey. His simple but significant theory has become the foundation for studying many wideband antennas, ... See full document

... of reconfigurable frequency antennas, recently a reconfigurable wideband to agile narrowband frequencies, using a printed log periodic dipole array antenna, was ...A ... See full document

... a log-periodic formation of rectangular fractals is provided for broadside radiation in UWB services, where square slots are reduce in the square ...of log-periodic antenna is adjusted to ... See full document

... a Log Periodic Dipole Array (LPDA) antenna at Kalyani, West Bengal for observing solar bursts in the frequency range of 50 to 300 ...its wideband operation, simple fabrication and low ... See full document

... Log-periodic dipole arrays (LPDAs) are special linear arrays composed of parallel dipoles of different length [1]. They exhibit wideband behavior and gain flatness (i.e., the difference between the ... See full document

... 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 adjusted ... See full document

... To the best of our knowledge, only a few works dealing with printed LPDA antennas operating both in the C, X and Ku bands can be found in the open literature (see, e.g., [8]). Actually, it is difficult to obtain a ... See full document

... Ultra wideband (UWB) wireless communication allows low power level and high data rate transmissions have embarked great research interests for wireless communications applications in the ...Printed ... See full document

... The new antenna is printed on a 0.79 mm thick FR4 substrate having a permittivity of 4.6, and a loss tangent of 0.018. The overall size of the antenna is 196 mm by 53 mm. Figs. 1 and 2 illustrate the geometry and the ... See full document

... the antenna to switch between linear and circular polarizations by controlling single DC voltage. As the PIN diodes are placed in the ground plane and the DC biasing circuit is isolated, the influence of the diodes on ... See full document

... Log Periodic antenna introduced by DuHamel and Isbell [1] is frequency independent antenna which has a structural geometry such that its impedance is periodic with logarithm of the ...a log ... See full document

... the reconfigurable patch and ground plane used as a technique for enhancing band width of microstrip antenna, traditional rectangular patch microstrip antenna is used as a comparison for result with ... See full document

... two-element log- periodic dipole array as a driven element is ...two-element log-periodic dipole array, a simple microstrip to stripline transition as a balun is designed, which ... See full document

... Log Periodic Dipole Array (LPDA), as the name suggests, comprised of two crossed logarithmic periodic dipole antennas, one arranged in north-south direction and the other in east-west ... See full document

... In this letter, a different technique is proposed to obtain a good circular polarization by using fractal concept. The term fractal, which means broken or irregular fragments, was originally coined by B. B. Mandelbrot ... See full document

... rectangular patch second rejection at ...will reconfigurable at three different frequency responses ...The reconfigurable antennas are controlled by integrating RF with PIN diode, MEM switch or a ... See full document