New concept of hybrid TEM-Cell and reverberation chamber facility

The paper describes new hybrid Transverse Electromagnetic Cell (TEM-Cell) and Reverberation Chamber (RC) facility. The TEM-Cell, using four wired septum´s, operates in the frequency range from 50 MHz to 1 GHz and mechanically stirred RC operates from 1 to 18 GHz. The RC uses broadband TEM-mode horn antenna installed on the outside of the chamber. Suppressing higher order modes in the TEM-Cell allows joining respective frequency ranges and results in development of a new hybrid TEM/RC test facility operating from 50 MHz to 18 GHz, with 50 MHz resulting only from availability of test equipment. For broadband testing, use of new TEM-Cell, results in more than three-fold reduction of the RC size, independently if the testing is done in the new TEM-Cell and RC separately or if it is done in a hybrid facility. The reduction of the size of the RC allows 6-fold decrease of input power required to achieve the same average E-field in the chamber.