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  2. Directional antenna - Wikipedia

    en.wikipedia.org/wiki/Directional_antenna

    A high-gain antenna (HGA) is a directional antenna with a focused, narrow beam width, permitting more precise targeting of the radio signals. [1] Most commonly referred to during space missions , [ 2 ] these antennas are also in use all over Earth , most successfully in flat, open areas where there are no mountains to disrupt radiowaves.

  3. Antenna (radio) - Wikipedia

    en.wikipedia.org/wiki/Antenna_(radio)

    High-gain antennas have the advantage of longer range and better signal quality, but must be aimed carefully at the other antenna. An example of a high-gain antenna is a parabolic dish such as a satellite television antenna. Low-gain antennas have shorter range, but the orientation of the antenna is relatively unimportant. An example of a low ...

  4. Antenna types - Wikipedia

    en.wikipedia.org/wiki/Antenna_types

    A directive antenna with moderate gain of about 8 dBi often used at UHF frequencies. Consists of a dipole mounted in front of two reflective metal screens joined at an angle, usually 90°. Used as a rooftop UHF television antenna and for point-to-point data links. Parabolic The most widely used high gain antenna at microwave frequencies and above.

  5. Gain (antenna) - Wikipedia

    en.wikipedia.org/wiki/Gain_(antenna)

    In electromagnetics, an antenna's gain is a key performance parameter which combines the antenna's directivity and radiation efficiency. The term power gain has been deprecated by IEEE. [1] In a transmitting antenna, the gain describes how well the antenna converts input power into radio waves headed in a specified direction. In a receiving ...

  6. Effective radiated power - Wikipedia

    en.wikipedia.org/wiki/Effective_radiated_power

    Since it is constructed from dipoles, often its antenna gain is expressed in dB d, but listed only as dB. This ambiguity is undesirable with respect to engineering specifications. A Yagi–Uda antenna's maximum directivity is 8.77 dB d = 10.92 dB i. Its gain necessarily must be less than this by the factor η, which must be negative in units of dB.

  7. Whip antenna - Wikipedia

    en.wikipedia.org/wiki/Whip_antenna

    Whip antenna on portable FM radio receiver Whip antenna on car. A whip antenna is an antenna consisting of a straight flexible wire or rod. The bottom end of the whip is connected to the radio receiver or transmitter. A whip antenna is a form of monopole antenna. The antenna is designed to be flexible so that it does not break easily, and the ...

  8. Parabolic antenna - Wikipedia

    en.wikipedia.org/wiki/Parabolic_antenna

    The directive qualities of an antenna are measured by a dimensionless parameter called its gain, which is the ratio of the power received by the antenna from a source along its beam axis to the power received by a hypothetical isotropic antenna. The gain of a parabolic antenna is: [3] [12]

  9. High-gain antenna - Wikipedia

    en.wikipedia.org/?title=High-gain_antenna&...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=High-gain_antenna&oldid=671552922"

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