Design of Vertically Stacked Waveguide Filters in LTCC

• Published in: IEEE transactions on microwave theory and techniques Vol. 55; no. 8; pp. 1771 - 1779
• Main Authors: Shen, Tze-Min, Chen, Chi-Feng, Huang, Ting-Yi, Wu, Ruey-Beei
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.08.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Band pass filters; Bandpass filter; cavity; Ceramics; Circuit properties; Coupling circuits; coupling coefficient; Cross coupling; Electric fields; Electric filters; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; Frequency; Frequency filters; Holes; low-temperature co-fired ceramic (LTCC); Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Microwave filters; Millimeter wave technology; Multilayers; Nonhomogeneous media; Oscillators, resonators, synthetizers; Planar waveguides; quasi-elliptic function; Resonator filters; Resonators; Space technology; stacked vias; Walls; Waveguide filters; Stack filter; Selectivity; low- temperature co-fired ceramic (LTCC); Flexibility; Bandpass filter; Cavity; quasi-elliptic function; Band pass filter; Cavity resonator; Ceramic materials; Low temperature; Waveguide filters; Waveguide resonator; Multivariable control; Resonator filters; Multiple layer; Compact design; Electric field; Planar waveguide; Simulation; stacked vias; Coupling coefficient; Miniaturization; Piezoelectric resonator; Comparative study; Coupled resonator; Planar technology

This paper proposes four-pole quasi-elliptic function bandpass waveguide filters using multilayer low-temperature co-fired ceramic technology. The vertical metal walls of the waveguide resonators are realized by closely spaced metallic vias. Adjacent cavities are coupled by a narrow slot at the edge...