Simulación eficiente de filtros en guía de onda mediante Verilog-A

Abstract

In this paper we present a comparison between universal Verilog-A modeling language and full 3D electromagnetic simulators used for waveguide microwave filter design. Computational time is drastically reduced when Verilog- A language is used for designing compared to full 3D electromagnetic simulations (99.78% reduction compared to FDTD simulator and 99.92% reduction compared to Finite Element Method simulator). Verilog-A modeling language was chosen to describe the electrical behavior of the waveguide obstacle due to the advantages of its portability among different commercial simulation platforms. In this paper, simulated and measured results for a band pass filter of 0.45 GHz bandwidth at 12.62 GHz center frequency, with fifth order Chebyshev response is proposed. The filter has been manufactured on WR- 75 rectangular waveguide and consists of five double post sections. S21 response is reproduced within a 0.7% of the experimental values of the center frequency.