Bandwidth enhancement on waveguide transition to conductor backed CPW with high dielectric constant substrate
Journal
IEEE Microwave and Wireless Components Letters
Journal Volume
15
Journal Issue
2
Pages
128-130
Date Issued
2005-02
Author(s)
Abstract
This paper proposes a broadband transition design between conductor-backed coplanar waveguide (CB-CPW) and rectangular waveguide based on the concept of the multisection transformer. The genetic algorithm (GA) was adopted to efficiently optimize the multisection transformer for achieving wideband performance. Using a multisection of order 3, a V-band transition realized on an Al2O3 substrate could achieve 25% bandwidth with a return loss better than 20 dB. Two transitions connected back to back were realized to demonstrate the feasibility of the transition. Also, a tolerance analysis was performed via the simulation to verify the robustness of this transition design.
Other Subjects
Antennas; Bandwidth; Computer simulation; Genetic algorithms; Optical design; Permittivity; Substrates; Conductor backed coplanar waveguides (CB-CPW); Multisection transformers; Slot-lines; Waveguide transition; Waveguides
Type
journal article