Inscrit le: 02 Avr 2016
|Posté le: Lun 3 Juil - 19:27 (2017) Sujet du message: SuperDipole Antennas
“Super-Dipole Antennas” is a book that introduces a completely new “Uniﬁed Broad-Banding Method”. This method primarily consists of the use of a 1/2 wavelength Dipole, which is fed with a 1/4 (or shorter) wavelength resonant line. The amount of coupling between these two components is greatly reduced and controlled to produce a wide SWR bandwidth. This Broad-Banding Method is referred to as “Critically-Coupled Broad-Banding”.
There are many different conﬁgurations that are possible and these are presented in a logical sequence, showing how each has evolved from the previous one. Some use “Low Impedance Coupling”, while others utilize “High Impedance” and both can achieve low SWR bandwidths.
Most all of the conﬁgurations are adaptable to the various radio Amateur bands, from 160m to above the 6m band. Some utilize wire radiators, while others at the higher frequencies, utilize aluminum tubing. Large numbers of antennas are presented covering most all of the wider Amateur radio bands where Broad-Banding is most desirable.
The completely new and unique conﬁgurations introduced will completely change the perception of how antennas are Matched and Broad-Banded. Many of the conﬁgurations are very simple and easy to understand. Most have been reduced in complexity, cost of materials, and can readily be assembled and these are referred to as “Super-Dipole Antennas”.
Other methods of Broad-Banding are also presented, which have unique advantages, while some others have Multi-Band capabilities. Almost all of the conﬁgurations presented include charts showing how the Far-ﬁeld gains and coaxial losses vary across each of the bandwidths, giving a good perception of the efﬁciency on each band.
Each antenna conﬁguration has been carefully computer-modeled, making certain that all of the critical requirements are taken into account and checking the consistency of results, thus giving an assurance of good modeling accuracy.
This book has been written to purposely keep it simple, point out the pertinent details, make comparisons between different antennas, in the simple straightforward manner, while avoiding any complicated formulas. It is meant to be a tutorial on Broad-Banding, along with the catalog of practical antenna conﬁgurations in order to encourage further interest, imagination and experimentation.
bound: 206 pages
publisher: Dog Ear Publishing, LLC (March 17, 2017)
isbn: 1457548984, 978-1457548987,
weight: 14.9 ounces (