We present a novel paradigm for dispersion engineering in coupled transmission lines
(CTLs) based on exceptional points of degeneracy (EPDs). We also develop a theory for …

We present a general theory of exceptional points of degeneracy (EPD) in periodically time-
variant systems. We show that even a single resonator with a time-periodic component is …

A critical discussion on the computation of the dispersion diagram of electromagnetic
guiding/radiating structures with one-dimensional periodicity using general-purpose …

Exceptional point degeneracies (EPDs) in the resonant spectrum of non-Hermitian systems
have been recently employed for sensing due to the sublinear response of the resonance …

We demonstrate theoretically and experimentally that a simple periodic fully planar three-
way microstrip coupled waveguide exhibits a stationary inflection point (SIP). The SIP is a …

We experimentally demonstrate for the first time the degenerate band edge (DBE) condition,
namely, the degeneracy of four Bloch modes, in loaded circular metallic waveguides. The …

We present the theory of a new amplification regime in traveling wave tubes (TWTs)
composed of a slow wave periodic structure that supports multiple electromagnetic modes …

The generation of focused beams in the millimeter-and submillimeter-wave ranges, with
transverse-electric (TE) polarization, is investigated in the radiative near-field region. The …

In this communication, a composite right-/left-handed (CRLH) based four-quadrant dual-
beam scanning leaky-wave antenna is proposed and demonstrated using substrate …

The concept of lasers based on the frozen mode regime in active periodic optical
waveguides with a 3rd-order exceptional point of degeneracy (EPD) is advanced. The …