DocumentCode :
993542
Title :
On transient radiation from a log-periodic dipole array
Author :
Knop, C.
Author_Institution :
Andrew Corp., Orland Park, IL, USA
Volume :
18
Issue :
6
fYear :
1970
fDate :
11/1/1970 12:00:00 AM
Firstpage :
807
Lastpage :
808
Abstract :
An analysis of how a transient voltage is radiated from a log-periodic dipole array is presented by adopting an idealized model of the array. Due to the frequency dependent phase center location of the array and an assumed slow wave phase velocity which varies logarithmically with frequency, a time delay which decreases with increasing frequency results. This causes the envelope of the radiated pulse to have a time dependence determined by the product of the antenna´s admittance and the frequency spectrum of the input pulse with time being inversely related to frequency, and to have an instantaneous frequency which varies inversely with time.
Keywords :
Log-periodic antennas; Transient analysis; Admittance; Delay effects; Dipole antennas; Frequency dependence; Log periodic antennas; Passband; Phased arrays; Steady-state; Transient analysis; Voltage;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1970.1139803
Filename :
1139803
Link To Document :
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