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| View Original: | Dipole receiving antenna animation 4 616x380x150ms.gif (616x380) | |||
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| Keywords: Dipole receiving antenna animation 4 616x380x150ms.gif dipole antenna receiving power from a radio wave The half wave dipole consists of two metal rods each one quarter of the wavelength long attached through a parallel transmission line to a resistance equal to the characteristic impedance of the antenna representing the receiver The electromagnetic wave coming from the right is represented by its electric field <span style color green; >E green arrows</span> The wave's magnetic field is not shown The oscillating electric field exerts force on the electrons in the antenna rods creating oscillating currents black arrows causing them to travel back and forth between the ends of the antenna rods charging the ends of the antenna alternately positive + and negative - Since the antenna is a half-wavelength long at the radio wave's frequency it excites standing waves of voltage <span style color red; >V red</span> and current <span style color blue; >I blue</span> in the antenna The voltage and current along the antenna elements is represented graphically by the bands of color; their thickness at any point is proportional to the magnitude of the voltage or current The waves of radio frequency voltage and current travel down the transmission line and are absorbed in the resistor 2015-05-24 own Chetvorno other versions Dipole receiving antenna animation 6 800x394x150ms gif - Shows just voltage standing wave on antenna not on transmission line <br/> Dipole receiving antenna animation 2 800x403x15ms gif - same as above but more wide-angled view<br/> cc-zero Uploaded with UploadWizard Dipole antennas Animated GIF Animations of vibrations and waves Animations of electronics | ||||
