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2. Conformal antenna - Wikipedia

   en.wikipedia.org/wiki/Conformal_antenna

   In a conventional phased array the individual antenna elements are mounted on a flat surface. In a conformal antenna, they are mounted on a curved surface, and the phase shifters also compensate for the different phase shifts caused by the varying path lengths of the radio waves due to the location of the individual antennas on the curved surface.

3. Antenna types - Wikipedia

   en.wikipedia.org/wiki/Antenna_types

   A horn antenna has a flaring metal horn attached to a waveguide. It is a simple antenna with moderate gain of 15 to 25 dBi, used for applications such as radar guns, radiometers, and as feed antennas for parabolic dishes. Slot Consists of a waveguide with one or more slots cut in it to emit the microwaves. Linear slot antennas emit narrow fan ...

4. Blaw-Knox tower - Wikipedia

   en.wikipedia.org/wiki/Blaw-Knox_tower

   The diamond-shaped tower was patented by Nicholas Gerten and Ralph Jenner for Blaw-Knox July 29, 1930. [5] and was one of the first mast radiators.[1] [6] Previous antennas for medium and longwave broadcasting usually consisted of wires strung between masts, but in the Blaw-Knox antenna, as in modern AM broadcasting mast radiators, the metal mast structure functioned as the antenna. [1]

5. Omnidirectional antenna - Wikipedia

   en.wikipedia.org/wiki/Omnidirectional_antenna

   The quarter-wave monopole, the most compact resonant antenna, may be the most widely used antenna in the world. The five-eighth wave monopole – length 0.625 λ , or ⁠ 5 / 8 ⁠ of a wavelength – is also popular, since at that length monopoles direct the greatest proportion of their radiated power horizontally, hence the best use of ...

6. Antenna (radio) - Wikipedia

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

   Generally an antenna will not have a feed-point impedance that matches that of a transmission line; a matching network between antenna terminals and the transmission line will improve power transfer to the antenna. A non-adjustable matching network will most likely place further limits the usable bandwidth of the antenna system.

7. Monopole antenna - Wikipedia

   en.wikipedia.org/wiki/Monopole_antenna

   The antenna is resonant at this length, so its input impedance is purely resistive. The input impedance has capacitive reactance below ⁠ 1 / 4 ⁠ λ and inductive reactance from ⁠ 1 / 4 ⁠ to ⁠ 1 / 2 ⁠ λ. The gains given in this section are only achieved if the antenna is mounted over a perfectly conducting infinite ground plane ...