DocumentCode :
1152629
Title :
Circuit Model of a Receiving Leaky Line Antenna (LLA)
Author :
De Santis, Valerio ; Feliziani, Mauro
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of L´´Aquila, L´´Aquila, Italy
Volume :
51
Issue :
3
fYear :
2009
Firstpage :
852
Lastpage :
859
Abstract :
A circuit model is proposed to analyze the receiving performance of a leaky line antenna (LLA), i.e., a coaxial cable with aperture slots in the shield. The LLA is assumed to be a series connection of circuit multiport networks equivalent to leaky and nonleaky cable sections. The quasi-TEM mode is assumed to be the dominant propagation mode inside the cable permitting the simulation of the nonleaky sections by the model of multiconductor transmission line with distributed voltage and current sources. The cable leaky sections with slots in the shield are modeled by equivalent multiport networks, whose lumped circuit parameters are extracted numerically by an electromagnetic (EM) field solver. The resulting circuit is given by a series cascade of multiport networks and is analyzed in the frequency domain. The LLA performance calculated for different test configurations is validated by comparison with measurements and with simulations carried out by a full-wave EM code. The proposed circuit procedure is an efficient tool for simple design and analysis of LLA configurations.
Keywords :
aperture antennas; electromagnetic wave propagation; leaky wave antennas; lumped parameter networks; multiconductor transmission lines; receiving antennas; aperture slots; cable leaky sections; circuit model; circuit multiport networks; coaxial cable; electromagnetic field solver; full-wave EM code; lumped circuit parameters; multiconductor transmission line; multiport networks; nonleaky cable sections; propagation mode; quasi-TEM mode; receiving leaky line antenna; Antennas and propagation; Aperture antennas; Cable shielding; Circuit simulation; Coaxial cables; Electromagnetic propagation; Performance analysis; Power cables; Receiving antennas; Slot antennas; Aperture slots; circuit parameter extraction; finite element method (FEM); leaky coaxial cable equivalent circuit; leaky line antenna (LLA); multiconductor transmission line (MTL);
fLanguage :
English
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9375
Type :
jour
DOI :
10.1109/TEMC.2009.2025031
Filename :
5175396
Link To Document :
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