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  2. Rectenna - Wikipedia

    en.wikipedia.org/wiki/Rectenna

    A rectenna (rectifying antenna) is a special type of receiving antenna that is used for converting electromagnetic energy into direct current (DC) electricity. They are used in wireless power transmission systems that transmit power by radio waves. A simple rectenna element consists of a dipole antenna with a diode connected across the dipole ...

  3. Television antenna - Wikipedia

    en.wikipedia.org/wiki/Television_antenna

    A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...

  4. List of Laff affiliates - Wikipedia

    en.wikipedia.org/wiki/List_of_Laff_affiliates

    [citation needed] On March 13, 2015, Katz Broadcasting announced an affiliation deal with the Cox Media Group to carry Laff on seven of its stations (including WSB-TV in Atlanta and WFXT in Boston), expanding its initial reach to 47% of the country; [4] the following week on March 20, as part of a multi-network affiliation agreement with Katz ...

  5. Satellite dish - Wikipedia

    en.wikipedia.org/wiki/Satellite_dish

    The front cover of the 1979 Neiman-Marcus Christmas catalog featured the first home satellite TV stations on sale. [2] The dishes were nearly 20 feet (6.1 m) in diameter. [ 3 ] The satellite dishes of the early 1980s were 10 to 16 feet (3.0 to 4.9 m) in diameter [ 4 ] and made of fiberglass with an embedded layer of wire mesh or aluminium foil ...

  6. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    The category of simple antennas consists of dipoles, monopoles, and loop antennas. Nearly all can be made with a single segment of wire (ignoring the break made in the wire for the feedline connection). [citation needed] Dipoles and monopoles called linear antennas (or straight wire antennas) since their radiating parts lie along a single ...

  7. Driven and parasitic elements - Wikipedia

    en.wikipedia.org/wiki/Driven_and_parasitic_elements

    Yagi antenna for UHF TV reception with 22 parasitic elements; 4 reflectors attached to the vertical bracket at left, and 18 directors attached to the horizontal beam at right. The driven element is attached to the black box next to the reflectors. The antenna is most sensitive to radio waves coming from the right, parallel to the antenna's axis.