Article

A substrate integrated folded waveguide (SIFW) H-plane band-pass filter with double H-plane septa based on LTCC.

School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu, P. R. China.
IEEE transactions on ultrasonics, ferroelectrics, and frequency control (impact factor: 1.8). 03/2012; 59(3):560-3. DOI:10.1109/TUFFC.2012.2229
Source: PubMed

ABSTRACT In this paper, a novel substrate integrated folded waveguide (SIFW) H-plane band-pass filter based on low-temperature co-fired ceramic technology (LTCC) is proposed which employs double H-plane septa of a short-ended evanescent waveguide as an impedance inverter. The filter has advantages of convenient integration, compact, low cost, mass-producibility, and ease of fabrication, and it also has frequency responses similar to those of traditional E-plane double-iris waveguide band-pass filters. To validate the new proposed topology, a three-pole narrowband band-pass filter is designed and fabricated using half-wavelength resonators. A comparison between measured results and simulated results shows good agreement.

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Keywords

compact
 
employs double H-plane septa
 
fabrication
 
half-wavelength resonators
 
impedance inverter
 
low-temperature co-fired ceramic technology
 
LTCC
 
SIFW
 
three-pole narrowband band-pass filter
 
topology
 
traditional E-plane double-iris waveguide band-pass filters
 

Zhengwei Wang