RESEARCH ON BROADBAND ANTENNA DESIGN
TECHNISCHE HOCHSCHULE MUNICH (GERMANY F R)
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Research was concerned with the development of a braod-band omnidirectional antenna with as many frequency independent electrical characteristics as possible. A review of earlier reports is presented. A summary is also presented of all the usable measures that decrease the frequency dependence of the radiation pattern of broad-band radiators. Two technically important antenna shapes are described in detail 1 a 50 ohm radiator, with good broad-band matching, having A BROAD-BAND DIFFUSED RADIATION PATTERN WHICH RESEMBLES THAT OF A SHORT DIPOLE OVER A LARGE FREQUENCY RANGE, AND 2 a 60 ohm radiator that has a constant horizontal direction for the main lobe and also a good broad-band matching. A new coordinate system for the 60 ohm spherical radiator was developed which has the advantage over the preciously used system in that the values Fn and Gn remain finite, even at the radiator apex.
- Electrical and Electronic Equipment
- Electricity and Magnetism
- Radiofrequency Wave Propagation