Matching the Input Impedance of a Short Monopole to the Wave Impedance of the Feeder with the Use of an L-Network Consisting of Finite-Q Inductances

摘要

Design relationships for the elements of an L-network consisting of finite-Q inductances and intended for matching the impedance of a shortened electric monopole to the wave impedance of the feeder have been obtained. Plots that make it possible to estimate the dependence of the bandwidth and dissipation loss of the matching network on the degree of the monopole shortening with respect to the nominal λ/4 length have been constructed. The obtained estimate makes it possible to take a trade-off decision between the desired degree of decrease in the overall dimensions of the m antenna and the acceptable degree of its performance degradation.