A derived concise circuit model for electrically small antennas

The concept of generalized complex inductance for the partial element equivalent circuit (PEEC) technique is introduced to model microstrip radiation problems. Using the semi-analytical Green's functions for microstrip substrates, the imaginary part of this generalized complex inductance can be shown to represent a frequency-dependent resistance containing information about the losses from spatial radiations (spherical and lateral) and surface waves (cylindrical). Hence, different radiation components can be derived separately, providing a useful and unique feature for representing high-speed/high-frequency microstrip structures and antennas in the network domain.