This compact antenna, only 18.5" long and 8.5" high (47 cm x 22 cm), features a log-periodic
design with 9 elements.
However, in our experiment, log-periodic
, bow-tie, and Vivaldi antennas were selected based on the availability at the time of research and their dimensions in cm were 28.5 x 23, 17 x 27 x 13.5, and 55 x 70, respectively.
The company also highlighted its latest antenna offering-- the AT700M12G wideband trapezoidal log-periodic
antenna (Figure 1), which operates from 700 MHz to 11 GHz.
It describes the theory of thin antennas, the integral equation method, folded antennas of metal wires, multi-folded and multi-level antennas, antennas with concentrated loads, the synthesis of directional radiators, the methods of a complex potential for cylindrical problems and three-dimensional problems, the principle of complementarities, problems of compensation and adjustment, arrays, transparent antennas, ship antennas, log-periodic
antennas, and other issues, such as antennas for underground radio communication and observation and magnetic impedance antennas.
They also argued that most financial crashes are the climax of the so-called log-periodic
power law signatures (LPPLS) associated with speculative bubbles .
Several topologies have been explored to achieve this, such as fractal geometry [17-19], multiple segments arrangement [20-22], log-periodic
antennas [23-25] and nanocrescent antenna .
Fractals and log-periodic
corrections applied to masses and energy levels of several nuclei.
The former finance professor adds a novel mathematical argument to his arsenal of warnings, this one based on a log-periodic
pattern he calls "almost creepy" in the consistency with which successive market troughs come closer and closer in time to the ultimate blowoffs.
To meet the requirements of the modern communication standards, there has been increasing research on log-periodic
microstrip antennas, which can simplify the systems, and reduce production costs.
dipole arrays (LPDA) of cylindrical wire dipoles are well known since the 50's, and their design rules are mainly based on the works of Isbel and Carrel [1-3].
This RF energy is harvested using a commercial log-periodic
antenna and it is next converted to a DC voltage, using a voltage multiplier and a voltage regulator.