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Characteristics of a horizontal circular loop antenna over a multilayered, dissipative half-space

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1 Author(s)
Chang, D.C. ; Univ. of Colorado, Boulder, CO, USA

The problem of a horizontal loop antenna located above a stratified dissipative half-space is investigated. Current distribution is formally obtained by cosinusoidal expansion around the loop. The effect of the lower half-space on each modal current is discussed in the case of a small loop ( k_{0}b = 0.3 ) and a resonant loop ( k_{0}b = 1 ). Change in input admittance as a function of height and as a function of the electric parameters of a homogeneous dissipative haft-space are presented. Such change is found to be very pronounced when the loop is close to the interface and when the loop is near resonance. The effect of a second layer in the lower half-space is then discussed.

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Antennas and Propagation, IEEE Transactions on  (Volume:21 ,  Issue: 6 )