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antenna radiation
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about antenna radiation on dxzone.com
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Antennas
- Building an own Stackmatch
- Nowdays lots of people are putting up antennas to either beam in different directions at the same time or just to stack them and get a lower angle of radiation. Use this stackmatch to match you array.
[Hits: 670 | Votes: 1 | Rate: 8.00] Antennas : 10M
- Cubic Quad
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- The cubic quad is a very popular way to get reasonably high gain and excellent front to back ratios as well as low angles of radiation for without going to extreme heights. Includes design for 2 6 10 12 15 meter bands
[Hits: 55611 | Votes: 31 | Rate: 4.56] Antennas : 15M
- The extended double zepp
- This wire antenna exhibits extraordinarily high gain in a bi directional radiation pattern.
[Hits: 11085 | Votes: 27 | Rate: 8.04] - 21 mhz half wave GP Antenna
- 21 mhz half wave ant -very low radiation angle - full size and light weight- all coax matching system - decoupling care to prevent low angle radiation degrade
[Hits: 1304 | Votes: 1 | Rate: 4.00] Antennas : 20M
- 20m delta loop
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- 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: 49573 | Votes: 36 | Rate: 6.08] Antennas : 2M
- 3 elements VHF yagi antenna
- 3 elements VHF Yagi homebrew antenna designed with YAGIMAX 3. Maximum forward GAIN is about 8,17 DBi. This antenna offering an effective radiation power 4 times greater of the transceiver output by SV1BSX
[Hits: 6616 | Votes: 17 | Rate: 6.11] Antennas : 80M
- 80M Vertical antenna with capacitance hat
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- Simple wire antenna cheap to make, using readily available materials, Low angle radiation, with rejection of high angle signals Wide bandwidth, with resonance at the 80M DX window (3.790-3.800 MHz); and Maximum height is 40 feet
[Hits: 19621 | Votes: 22 | Rate: 7.32] Antennas : Collinear
- The Simple Collinear
- Wherever there is a need for a vertically polarized omni-directional antenna with gain, a collinear is used. The vertically polarized collinear takes the form of two or more half waves in-line and in-phase, resulting in an omni-directional pattern with maximum radiation near the horizon.
[Hits: 6994 | Votes: 8 | Rate: 7.75] Antennas : Dipole
- Dipole Antenna Radiation Patterns
- Much confusion exists about the radiation patterns of antennas. In particular, the horizontal
dipole is misunderstood by most who use it.
[Hits: 1563 | Votes: 5 | Rate: 4.40] Antennas : EH
- W8JI Technical pages
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- Amplifier, vacuum tube, receiving beverage loop vertical and transmitting antenna system technical information radiation resistance, EH antenna, noise,receivers, and information on keyclicks.
[Hits: 19014 | Votes: 35 | Rate: 8.23] - EH antenna power lost considerations
- Out of Balance Current or Longitudinal Mode Current in the Coaxial Cable causes radiation from the coax. But how large a proportion of the total power is radiated or lost from this Current?
[Hits: 1062 | Votes: 1 | Rate: 4.00] Antennas : Feed Lines
- Feeder Radiation
- Connecting centre fed antennas, dipoles, yagis, rhombics, loops to coaxial cable, unless care is taken, it is not difficult to end up with feeder radiation resulting in power loss and the radiation characteristics changes
[Hits: 1255 | Votes: 1 | Rate: 1.00] Antennas : G5RV Antennas : Helical
- Helical Feed Antennas
- Helical antennas have long been popular in applications from VHF to
microwaves requiring circular polarization, since they have the unique
property of naturally providing circularly polarized radiation. Paul Wade W1GHZ
[Hits: 1302 | Votes: 1 | Rate: 1.00] Antennas : Magnetic Loop
- Antentop: Loop Antennas
- Article on radiation patterns of small loops, equivalent circuits of loop antenna, small loops as receiving antennas, ferrite loops
[Hits: 1344 | Votes: 3 | Rate: 7.33] Antennas : Rhombic Antennas : Theory
- Radiation and scattering
- Basic antenna theory, Antenna directivity and effective area, Antenna arrays
[Hits: 2794 | Votes: 2 | Rate: 10.00] - Small antennas and radiation resistance
- Small antenna, what causes loss and how to increase radiation resistance in small antennas., A description of loss and radiation resistance.
[Hits: 702 | Votes: 0 | Rate: 0.00] - 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: 1198 | Votes: 4 | Rate: 7.00] - Understanding Radiation Patterns
- Understanding and using antenna radiation patterns
[Hits: 300 | Votes: 0 | Rate: 0.00] - 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: 580 | Votes: 3 | Rate: 4.00] Software : Antenna analysis
- Antenna Visualization
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- UNIX Application developped at the University of Texas Department of the Computer Sciences, permit to display the radiation pattern and the current magnitude.
[Hits: 5313 | Votes: 17 | Rate: 6.12] - Yagi Designer
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- Program that produces antenna radiation patterns and graphs for SWR, forward gain, and F/B ratios
[Hits: 18679 | Votes: 42 | Rate: 6.63] - 4NEC2 antenna modeler
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- 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: 23253 | Votes: 107 | Rate: 7.55] - Xperto Antenna Software
- XPERTO is a software for the modeling of antennas and 3D arbitrarily shaped wire structures. Xperto computes the electromagnetic response of wire antennas, including radiation and scattering problems.
[Hits: 773 | Votes: 0 | Rate: 0.00]
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