On small antenna impedance in weakly dissipative media
Author :
Ancona, C.
Author_Institution :
STAREC Res. Center, Massy, France
Volume :
26
Issue :
2
fYear :
1978
fDate :
3/1/1978 12:00:00 AM
Firstpage :
341
Lastpage :
343
Abstract :
Based on antenna modeling theory, a simple formula is established relating antenna impedance in a dissipative medium to that in free space. The approximation is shown to be valid for small losses ( ) and is restricted to bare perfectly conducting small antennas. An application to a conical unipole is presented, and a simple graphical construction is proposed to derive the required impedance curve in the complex plane from that in free space.
Keywords :
Buried antennas; Conical antennas; Plasma-covered antennas; Underwater antennas; Antenna theory; Antennas and propagation; Base stations; Current distribution; Data engineering; Dipole antennas; Gain; Impedance; Integral equations;