  A pulse generation scheme is proposed based on a structured resonance in a
cavity where the non-conventional energy distribution is concentrated in its
middle part. The cavity is first used as an oscillator during the energy
charging step and when a switch is activated the signal is extracted from its
center. The key component of the proposed scheme is the periodic microstrip
waveguide with a fourth-order degenerate band edge (DBE) of its
wavenumber-frequency dispersion diagram. The DBE is an exceptional point
degeneracy condition that is responsible for the energy to be localized at the
cavity center and that can also have the quality factor easily destroyed by a
perturbation. The waveguide is designed to have a DBE frequency of 2.86 GHz and
produces pulses of approximately 0.1 V peak and 1.1 ns width.
