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2. Biconical antenna - Wikipedia

   en.wikipedia.org/wiki/Biconical_antenna

   The biconical antenna has a broad bandwidth because it is an example of a traveling wave structure; the analysis for a theoretical infinite antenna resembles that of a transmission line. For an infinite antenna, the characteristic impedance at the point of connection is a function of the cone angle only and is independent of the frequency.

3. File:Monopole radiation pattern 1.2 wavelength.png - Wikipedia

   en.wikipedia.org/wiki/File:Monopole_radiation...

   English: Far field vertical radiation pattern of 1.2 wavelength monopole antenna over a perfectly conducting infinite ground plane. The radial axis is relative signal strength (electric field magnitude) and the circumferential axis is in degrees.

4. Radiation pattern - Wikipedia

   en.wikipedia.org/wiki/Radiation_pattern

   The far-field pattern of an antenna may be determined experimentally at an antenna range, or alternatively, the near-field pattern may be found using a near-field scanner, and the radiation pattern deduced from it by computation. [1] The far-field radiation pattern can also be calculated from the antenna shape by computer programs such as NEC.

5. File:Radiation-patterns-v.png - Wikipedia

   en.wikipedia.org/wiki/File:Radiation-patterns-v.png

   What links here; Upload file; Special pages; Printable version; Page information; Get shortened URL; Download QR code

6. File:Monopole and image antenna.svg - Wikipedia

   en.wikipedia.org/wiki/File:Monopole_and_image...

   English: Diagram showing why a monopole antenna has the same radiation pattern as a dipole antenna, with twice the radiated power.When a monopole antenna, (a) is mounted over a perfectly conducting ground plane such as the Earth, the radio waves can reach a given point P by two paths, either propagating directly in a straight line to P, or reaching P after first reflecting from the plane (blue ...

7. Omnidirectional antenna - Wikipedia

   en.wikipedia.org/wiki/Omnidirectional_antenna

   Vertical polarized VHF-UHF biconical antenna 170–1100 MHz with omnidirectional H-plane pattern. Omnidirectional radiation patterns are produced by the simplest practical antennas, monopole and dipole antennas, consisting of one or two straight rod conductors on a common axis. Antenna gain (G) is defined as antenna efficiency (e) multiplied by ...

8. Antenna (radio) - Wikipedia

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

   The radiation of many antennas shows a pattern of maxima or "lobes" at various angles, separated by "nulls", angles where the radiation falls to zero. This is because the radio waves emitted by different parts of the antenna typically interfere , causing maxima at angles where the radio waves arrive at distant points in phase , and zero ...

9. Discone antenna - Wikipedia

   en.wikipedia.org/wiki/Discone_antenna

   This reduces stored energy in the electric field, reducing antenna Q while also reducing losses. The elevation pattern might be distorted with grating lobes. SWR (standing wave ratio) is typically 1.5:1 or less over several octaves of frequency. [4] A discone antenna consists of three main parts: the disc, the cone, and the insulator.