Abstract
The eigenwave dispersion (its initial periodicity-dispersion component) and the H0i-wave power flows (via the partial wave concept proven) are examined in a periodic iris-loaded circular waveguide (PICW). The eigen-values and modes are classified; arbitrariness of a Bragg wave-point location, the eigenwave interpretation, the contradirectional power flows, the asymmetric wave hybridity, and etc., are found and/or explained. All of the results are valid to the class of periodic-boundary structures (PBS). 1. NOTATIONS LIST PERTAINING TO THE PROBLEM 1. (κB, καB) ≡ (κ, κα)B — Bragg wave-number and its ordinate on the Brillouin plane (κ, κα), i.e., the Bragg wave-point; 2. ∆ωB — Bragg band, i.e., a (locally) forbidden band; ∆Ωi — the i-mode propagation band; 3. periodicity dispersion — the first one of the two factors — periodicity and diffraction — responsible for the waveguide dispersion forming; 4. initial periodicity dispersion (i.p.d.) — the waveguide dispersion at infinitesimal irises; 5. regular mode — the PICW eigenmode in one-to-one correspondence to that of the smooth waveguide; 6. periodicity mode — the PICW eigenmode originating due to the periodicity effect; 7. partial waves — the independent ingredients of a PICW eigenwave.
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