Abstract
The diplexers based on 2D electromagnetic crystal are investigated with the help of the numerical electrodynamic analysis of 3D models. The input half-wave resonator has rolled up strip conductor in the claimed microstrip designs tuned with nearly adjacent bandwidths. It allows to coordinate channels rather easily. Such resonator in the first two-channel device at the same time interacts with pair of quarter-wave resonators having strip conductors in the form of the Russian letter «Π». In the second two-channel device it interacts similarly, with pair of resonators with strip conductors in the form of a letter «III». Build-up of number of periodically located rectangular portions of strip conductors in adjacent resonators allows to increase in proportion number of the resonances participating in formation of both low-frequency, and high-frequency bandwidths. At the same time in amplitude-frequency characteristics of diplexers growth of the steepness of slopes of adjacent bandwidths and gain suppression of power at frequencies of stop bands are observed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have