Direct Metal Printed 4th order Stepped Impedance Filter in the C/X Band

In recent years, additive manufacturing (AM) techniques were increasingly applied to develop RF and microwave components. The main advantage of AM is a reduction in both mass and production time. The AM technique investigated in this paper is direct metal printing (DMP). As a consequence, challengin...

Full description

Saved in:
Bibliographic Details
Main Authors: Sattler, Sebastian W., Gentili, Fabrizio, Teschl, Reinhard, Bosch, Wolfgang
Format: Conference Proceeding
Language:English
Subjects:
4th order cavity filter
additive manufacturing
bandpass filter
direct metal printing
Integrated circuit modeling
Manufacturing
Metals
Microwave filters
Radio frequency
Resonator filters
Solid modeling
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In recent years, additive manufacturing (AM) techniques were increasingly applied to develop RF and microwave components. The main advantage of AM is a reduction in both mass and production time. The AM technique investigated in this paper is direct metal printing (DMP). As a consequence, challenging geometries can be implemented. Here we present a 4 th order cavity filter, realized by cascading four lollypop-shaped resonators. The filter was designed to be manufactured in one block using stainless steel as a base material, however, for reasons of workpiece accessibility the two halves and the closing plates of the first prototype were produced separately and subsequently fixed together. Tuning screws were used to adjust the performance. The prototype filter exhibits a measured insertion loss of 1.14 dB with the matching being better than -12.77 dB, a fractional bandwidth of about 3.6 % at 7.926 GHz, and a Q-factor of 1600.
ISSN:2576-7216
DOI:10.1109/MWSYM.2018.8439567