DocumentCode
2760877
Title
Further investigations of fundamental directivity limitations of small antennas with and without ground planes
Author
Kildal, Per-Simon ; Best, Steven R.
Author_Institution
Chalmers Univ. of Technol., Gothenburg
fYear
2008
fDate
5-11 July 2008
Firstpage
1
Lastpage
4
Abstract
In this paper, we have presented a heuristic formula for the maximum achievable directivity of single-port antennas of any size. The formula is well rooted in electromagnetic theory in the low and high frequency ends. It has been tested by comparison with reported theoretical directivities of some practically realized antennas in the intermediate frequency range where the diameter of the smallest enclosing sphere is between 0.1lambda and 4lambda, and it seems to work as a practical limitation.
Keywords
antenna theory; directive antennas; electromagnetic waves; electromagnetic theory; fundamental directivity limitation; ground planes; heuristic formula; intermediate frequency range; single-port antennas; Antenna arrays; Antenna theory; Aperture antennas; Dipole antennas; Linear antenna arrays; Paper technology; Phased arrays; Planar arrays; Q factor; Shape;
fLanguage
English
Publisher
ieee
Conference_Titel
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location
San Diego, CA
Print_ISBN
978-1-4244-2041-4
Electronic_ISBN
978-1-4244-2042-1
Type
conf
DOI
10.1109/APS.2008.4618968
Filename
4618968
Link To Document