| 11. | At these glancing angles, electromagnetic fields and radiation patterns are the same as for a half-wave dipole.
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| 12. | The individual elements are most commonly half wave dipoles, although they sometimes contain parasitic elements as well as driven elements.
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| 13. | Quarter-wave monopole antennas ( 144 and 435 MHz ) and half-wave dipole antenna ( 29 MHz ).
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| 14. | Therefore, the total emitted power is half the emitted power of a half-wave dipole fed with the same current.
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| 15. | In this case, two half-wave dipoles were used, located about one wavelength apart horizontally on the antenna framework.
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| 16. | The antenna consisted of 4 rows of 16 half-wave dipoles backed by a 3-by 3-meter mesh screen.
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| 17. | An array of 1056 half-wave dipoles in front of a 90 degrees corner reflector forms the primary feed of the telescope.
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| 18. | Consider a half-wave dipole designed to work with signals 1 m wavelength, meaning the antenna would be approximately 50 cm across.
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| 19. | Most antennas are at least ?of the wavelength, more commonly ?the half-wave dipole is a very common design.
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| 20. | Antenna gain can also be measured in dBd, which is gain in Decibels compared to the maximum intensity direction of a half wave dipole.
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