Articles | Volume 2
Adv. Radio Sci., 2, 57–62, 2004
https://doi.org/10.5194/ars-2-57-2004
Adv. Radio Sci., 2, 57–62, 2004
https://doi.org/10.5194/ars-2-57-2004
 
27 May 2005
27 May 2005

Computation of the frequency response of a nonlinearly loaded antenna within a cavity

F. Gronwald, E. Blume, and J. Nitsch F. Gronwald et al.
  • Institute for Fundamental Electrical Engineering and EMC, Otto-von-Guericke-University Magdeburg, Universitätsplatz 2, 39106 Magdeburg, Germany

Abstract. We analyze a nonlinearly loaded dipole antenna which is located within a rectangular cavity and excited by an electromagnetic signal. The signal is composed from two different frequencies. In order to calculate the spectrum of the resulting electromagnetic field within the resonator we transform the antenna problem into a network problem. This requires to precisely determine the antenna impedance within the cavity. The resulting nonlinear equivalent network is solved by means of the harmonic balance technique. As a result the occurrence of low intermodulation frequencies within the spectrum is verified.