Mass Communication Study Notes

Directional antenna . The antennas directional unlike antennas omnidirectional an antenna directional (also called unidirectional or directive) is an antenna capable of concentrating most of the energy radiated so located, thus increasing the power transmitted to the receiver or from the source desired and avoiding interference introduced by unwanted sources. The directional antennas , such as antennas Parabolic , provide much better performance than the dipole antennas when it is … Read more

Delta Loop antenna . Antenna that allows the reception of electromagnetic waves used mainly by radio listeners. The Amateur Radio use them to your contacts nationwide and even for long distance , just to have enough space there for its location, its size somewhat high compared to dipoles . Summary [ hide ] 1 Features 2 Construction 3 Placement 4 Adjustment 5 Reception 6 Gain 7 Sources characteristics It is in this aspect that the delta loop … Read more

The television like any other kind of receiver of radio waves – require an antenna to capture energy efficient high frequency, and this is processed and decoded images and sounds generated by the TV. In the areas away from the transmission towers, the incoming signal is weak and the quality of the image and sound is considerably affected. Cartoon of a man sitting in front of … Read more

The windom dipole antenna was developed around 1929 and its creation is attributed to the radio amateur Loren Windom , W8GZ. Basically it is a dipole fed 1/3 instead of in the center, at this point it turns out that the impedance is the same for the harmonic bands, then with the appropriate balun it is possible to have the impedance adapted for several bands. Summary [ hide ] … Read more

Active antenna for FM, AM and SW . The antennas active are very useful in areas where some stations are at a very low level. Summary [ hide ] 1 Active antenna concept 2 Difference between active antenna and passive antenna 3 Circuit 4 Food 5 Description 6 Components 7 Source Active antenna concept The active antenna concept encompasses a wide variety of possible architectures composed of radiating … Read more

Antenna . Device used to transmit and receive radio waves . It converts the wave guided by the transmission line (the cable or waveguide) into electromagnetic waves that can be transmitted through free space. Summary [ hide ] 1 Definition 2 Current distribution of an antenna 1 Antennas and wavelength 3 General parameters of an antenna 4 Types of antennas 5 See also 6 Sources 7 External links Definition The formal definition of an … Read more