The ecological harmless antenna for mobile phone
D.Sc. B. Katzenelenbaum
This antenna has a small electric field domain ("a black spot") in the near zone; its pattern
resembles a dipole pattern. The antenna is small in size relative to the wavelength,
but it is not a super-directed antenna. Such an antenna can be used where the structure of
the closer field is essential, for instance, where there is a problem of electro-magnetic
compatibility, of protection from the mobile phone's field and similar cases.
The antenna is a resonator with radiating slots in it's walls. The resonator is constructed
from bandsas a two-wire line. It is closed on both ends, rolled in a plane spiral. The position and
the size of the slots are chosenin such a way, that the field is a sum of fields of a higher order.
The radiation elements in the other variants can be of thin wire. The antenna field is a sum
of an electrical dipole field and other multiples.
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