Equivalent circuit of dipole antenna of arbitrary length

Design, Analysis, and Equivalent Circuit Modeling of Dual Band PIFA Using a Stub for Performance Enhancement

“…The techniques for ECM in the form of transmission line, RLC resonators, or using the (PEEC) method has certain limitations either in the form of antenna geometry or in that the number of lumped elements of the produced equivalent circuit are quite large (as in the produced SPICE equivalent circuit modeled by the PEEC technique) [19]. The agreement between the simulated/measured antenna and ECM return loss results is not good for the transmission line and RLC resonators techniques [14,15]. The electric circuit produced using the proposed method has almost perfectly matched agreement between the electrical model and the fabricated/simulated PIFA geometry results.…”

“…The equivalent circuit of simple antenna structures with one resonance point can be derived in the form of transmission line models [14][15][16], frequency independent lumped element resonant structures [17,18], and physics-based compact lumped structures using the partial element equivalent circuit (PEEC) technique [19]. However, it is difficult to formulate equivalent circuits for complex antenna structures with multiple resonances.…”

An Equivalent Circuit Modeling Method for Ultra-Wideband Antennas

“…The component values of the narrow-band model can be calculated by utilizing the application bandwidths, center frequencies or resonant frequencies of antennas. The circuit topology has been successfully employed to model the dipole antenna [8]. …”

“…These include Hamid's graphical fitting method [8], Long's transmission line method [9], Gerrits's intuitive electrical schematic [10], Rambabu's broadband equivalent circuit consisting of a series resonant circuit and two parallel resonant circuits [11], Nie's accurate numerical modeling [12] and Tang's four-element lumped-parameter equivalent circuit [13]. These models above are physically based and propose several equivalent circuit topologies from the aspect of input impedance or admittance matching.…”

Circuit modeling methodology for UWB omnidirectional small antennas

“…The circuit topology in Fig. 2(a) has been successfully employed to model the input impedance of dipole antennas [14]. Note that since there is only one resistor in each circuit in Fig.…”