DocumentCode :
1017002
Title :
S/N performance of aperiodic monopoles
Author :
Radjy, S. Hamid ; Hansen, R.C.
Author_Institution :
Nat. Iranian Radio & Television, Tehran, Iran
Volume :
27
Issue :
2
fYear :
1979
fDate :
3/1/1979 12:00:00 AM
Firstpage :
259
Lastpage :
261
Abstract :
A short monopole connected to a high-impedance amplifier provides an output to field strength transfer function nearly independent of frequency over a wide band. Such antennas are advantageous for receiving at low frequencies where external noise greatly exceeds amplifier noise. An examination is made of 
performance of these antennas for the HF band. The degradation compared to an external noise limited system is 1 to 3 dB for a 2.5-dB noise figure amplifier and 2 to 5 dB for a 5-dB noise figure amplifier, over 3 to 30 mHz.
performance of these antennas for the HF band. The degradation compared to an external noise limited system is 1 to 3 dB for a 2.5-dB noise figure amplifier and 2 to 5 dB for a 5-dB noise figure amplifier, over 3 to 30 mHz.Keywords :
Antenna noise; HF antennas; Monopole antennas; Broadband antennas; Circuit noise; Couplers; Degradation; Dipole antennas; Frequency; Low-frequency noise; Noise figure; Radiofrequency amplifiers; Signal to noise ratio;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.1979.1142071
Filename :
1142071
Link To Document :
