If we have an LC oscillatory circuit as in Fig., field Power is concentrated in the small gap between the capacitor plates while the field magnetic covers a small space around the coil circuit. In the case given fields, being separated, obtaining electromagnetic waves is practically impossible. Strictly speaking, the closed oscillating circuit that emits radio waves in it a current of displacement, but usually that capacitor current does not pass into space, and online tamil fm then the radiation circuit is negligible. Radiation conditions are met in an open oscillating circuit, which can be passed from circuit closed separating the capacitor plates and while increasing its size to keep unchanged the eigenfrequency of the circuit as shown in Fig. The antenna obtained as a result of this conversion of the oscillating circuit closed to open, it is distinguished by its symmetry Geometric and therefore called DIPOLO have some inductance distributed along the conductors, and some capacity between conductors.
The simplest antenna T.V. It is the half wave dipole, which can be simple or folding. The characteristics of this antenna They are not sufficient for most cases, and we must resort to antennas with better qualities. To improve this type of antenna used resulting improvements Antennas Magi, panel antennas, Antennas logarithmic periodic, etc. TEACHER'S NOTE The author of this explanation is to say the following Electromagnetic wave It generated by the relationship or interaction of an electric field and a variable electromagnetic field. The product Vector E electric field and H magnetic field gives the direction of wave propagation. In the capacitor There is energy in the form of electric field and the coil shaped magnetic field, but the whole is almost closed and fields do not relate or interact, to connect an antenna to this circuit in resonance with, it becomes if well designed in an oscillating circuit open and begins to oscillate at the frequency closed oscillating circuit capacitor coil more emitting radiation.
The simplest antenna T.V. It is the half wave dipole, which can be simple or folding. The characteristics of this antenna They are not sufficient for most cases, and we must resort to antennas with better qualities. To improve this type of antenna used resulting improvements Antennas Magi, panel antennas, Antennas logarithmic periodic, etc. TEACHER'S NOTE The author of this explanation is to say the following Electromagnetic wave It generated by the relationship or interaction of an electric field and a variable electromagnetic field. The product Vector E electric field and H magnetic field gives the direction of wave propagation. In the capacitor There is energy in the form of electric field and the coil shaped magnetic field, but the whole is almost closed and fields do not relate or interact, to connect an antenna to this circuit in resonance with, it becomes if well designed in an oscillating circuit open and begins to oscillate at the frequency closed oscillating circuit capacitor coil more emitting radiation.