3-D-Printed Dual-Mode Filter Using an Ellipsoidal Cavity With Asymmetric Responses

A new structure based on an ellipsoidal cavity that operates with the fundamental mode and its degenerate in a transverse routing scheme is presented in this letter. This configuration yields asymmetric filtering functions with two poles and one transmission zero, the position of which can be easily...

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Bibliographic Details
Published in:IEEE microwave and wireless components letters 2021-06, Vol.31 (6), p.670-673
Main Authors: Lopez-Oliver, Enrique, Tomassoni, Cristiano
Format: Article
Language:English
Subjects:
3-D printing
additive manufacturing (AM)
Asymmetry
bandpass filter
Couplings
dual-mode
ellipsoidal cavity
Microwave theory and techniques
Passband
Q-factor
Resonant frequency
stereolithography (SLA)
Three dimensional printing
Topology
transmission zero (TZ)
Wireless communication
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Summary:A new structure based on an ellipsoidal cavity that operates with the fundamental mode and its degenerate in a transverse routing scheme is presented in this letter. This configuration yields asymmetric filtering functions with two poles and one transmission zero, the position of which can be easily controlled by the rotation of the input and output. For validation purposes, a two-pole filter has been designed and manufactured using 3-D printing techniques. Measured results demonstrate the feasibility of the proposed filter with good agreement between simulation and measurement.
ISSN:1531-1309
2771-957X
1558-1764
2771-9588
DOI:10.1109/LMWC.2021.3064244