antenna pattern

antenna pattern

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• The extended double zepp - This wire antenna exhibits extraordinarily high gain in a bi directional radiation pattern.
  [ Hits: 12408 | Votes: 28 | Rating: 8.11 ]

• Single support gain antennas for 80-160 meters - On 80 and 160 meters an antenna with modest gain and good front-to-back (F/B) ratio, along with a steerable pattern, can be very effective for contesting.
  [ Hits: 3403 | Votes: 0 | Rating: 0 ]

• 20m delta loop  ^pop - This antenna is fed for vertical polarisation, to give a low angle of radiation for DX and also a nearly omni-directional radiation pattern.
  [ Hits: 65723 | Votes: 69 | Rating: 6.71 ]

• The Moxon Rectangle on 2 Meters - We often think of the Moxon rectangle as strictly an HF antenna. However, its small size and special far field pattern lend themselves to some VHF applications. So let's see how to adapt the design to 2 meters (as a popular band choice) and also see a few of the uses to which we may effectively put the design.
  [ Hits: 11960 | Votes: 13 | Rating: 2.85 ]

• Trapped dipole for 80 and 40 m - This article explores a theoretical model for the losses of an 80m / 40m trapped inverted V dipole antenna system using a bootstrap coax trap, but does not examine the pattern of the antenna.
  [ Hits: 2731 | Votes: 0 | Rating: 0 ]

• An improved 40-80 double extended zepp - Article originally published in ARRL compendium by N6LF revisits the classic double extended Zepp to improve pattern and SWR bandwidth. The DEZepp is essentially two end-fed collinear dipoles.
  [ Hits: 18766 | Votes: 10 | Rating: 6.53 ]

• G5RV All-Band HF Antenna  ^pop - About G5RV antennas, with radiation pattern produced with eznec
  [ Hits: 29623 | Votes: 13 | Rating: 4.54 ]
• The G5RV patterns - G5RV detailed antenna patterns and 3D plots setting it up as inverted V with a different angle, compared to horizontal way.
  [ Hits: 4928 | Votes: 1 | Rating: 5 ]

• A Hanging Rectangular Loop Antenna - A rotatable hanging loop antenna that has been specifically designed for hanging in a tree. Horizontally polarized with a broad azimuth pattern and gain of nearly 3dB over a simple horizontal dipole!
  [ Hits: 3867 | Votes: 10 | Rating: 7.41 ]

• Antentop: Loop Antennas - Article on radiation patterns of small loops, equivalent circuits of loop antenna, small loops as receiving antennas, ferrite loops
  [ Hits: 2169 | Votes: 4 | Rating: 8 ]

• Rhombic antennas - Article on rhombic antennas, radiaton patterns, disvantages, and more info on rhombic aerials
  [ Hits: 2947 | Votes: 3 | Rating: 7 ]
• Rhombic Antenna for Shortwave Radio Broadcasting - Rhombic antenna for shortwave radio broadcasting, general description and radiation patterns
  [ Hits: 2806 | Votes: 1 | Rating: 10 ]

• Antenna Height Theory - Antenna mounting height, the higher the better? Learn how radiation pattern change, and decide if you need an higher or a lower angle for your dx needs.
  [ Hits: 1878 | Votes: 5 | Rating: 7.2 ]
• Understanding Radiation Patterns - Understanding and using antenna radiation patterns
  [ Hits: 534 | Votes: 0 | Rating: 0 ]
• Antenna Measurements - The electrical characteristics of an antenna that are of interest to obtain by direct measurement are the frequency at which the antenna is tuned, the gain and radiation pattern
  [ Hits: 946 | Votes: 3 | Rating: 4 ]
• Azimuth Radiation Patterns - Below VHF the change in the radiation characteristics of an antenna will change considerably from frequency to frequency, making antenna selection more complicated.
  [ Hits: 820 | Votes: 1 | Rating: 10 ]

• 7db tape measure yagi beam for RDF - A 3 element yagi beam antenna made with a tape measure. This design exhibits a very clean pattern and is perfect for RDF use.
  [ Hits: 4194 | Votes: 9 | Rating: 4 ]

• Quadrifilar helicoidal antenna - Design your own quadrifilar helix, the site even generates a drilling pattern in a PDF file. Several different construction methods are shown.
  [ Hits: 6082 | Votes: 16 | Rating: 6.87 ]

• Yagi Designer - Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios
  [ Hits: 22768 | Votes: 64 | Rating: 6.31 ]
• 4NEC2 antenna modeler  ^pop - 4nec2 is a completely free Nec2, Nec4 and windows based tool for creating, viewing, optimizing and checking 2D and 3D style antenna geometry structures and generate, display and/or compare near/far-field radiation patterns for both the starting and experienced antenna modeler. Can be interfaced to HFwin32 propagation prediction software.
  [ Hits: 30105 | Votes: 131 | Rating: 7.32 ]

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