Resonance features of microwave waveguide Bragg structures

Abstract

The appearance of resonance features, which are analogs of Tamm surface states, in the one-dimensional waveguide Bragg structure of the microwave range, composed of two series-connected Bragg structures with different sizes of elementary cells and made in the finn-line form has been investigated. The possibility of using the reflective properties of Bragg structures with resonant diaphragms in a circuit with a Y-circulator has been demonstrated to create rejection filters with controlled by n-i-p-i-n-diodes frequency characteristics with locking level in the stop band of more than 43 dB and losses outside the band less than 0.8 dB.

Keywords

• microwave photonic crystals
• resonant diaphragm
• photonic band gap
• filter
• y-circulator
• n-i-p-i-n-diode
• bragg structures
• localized states
• finline