Monolithic Q-band Waveguide Filter using 3D-Printed Silver

Lu Qian; Parastoo Jamshidi; Moataz M. Attallah; Yi Wang

doi:10.1109/IMFW64610.2026.11418989

Monolithic Q-band Waveguide Filter using 3D-Printed Silver

Lu Qian
, Parastoo Jamshidi
, Moataz M. Attallah
, Yi Wang

Electronic, Electrical and Systems Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Downloads (Pure)

Abstract

This paper presents the design, fabrication, and measurement of a Q-band waveguide bandpass filter fabricated using 3D-printed sterling silver. While aluminum alloys are common in additively manufactured microwave components, silver offers superior electrical and thermal conductivity. A stepped-impedance waveguide filter was fabricated using optimized Laser Powder Bed Fusion parameters to achieve high density and conductivity. RF measurements demonstrated a 0.8 dB minimum insertion loss and 17 dB worst-case return loss within the 37.5-42.5 GHz band. These results validate the feasibility of silver 3D printing for high-performance microwave devices.

Original language	English
Title of host publication	2026 IEEE International Microwave Filter Workshop (IMFW)
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Number of pages	3
ISBN (Electronic)	9798331550448
ISBN (Print)	9798331550455
DOIs	https://doi.org/10.1109/IMFW64610.2026.11418989
Publication status	Published - 10 Mar 2026
Event	2026 IEEE International Microwave Filter Workshop - Hong Kong, China Duration: 7 Feb 2026 → 9 Feb 2026 https://www.imfw-ieee.org/

Publication series

Name	Microwave Filter Workshop (IMFW), IEEE MTT-S International
Publisher	IEEE

Conference

Conference	2026 IEEE International Microwave Filter Workshop
Abbreviated title	IMFW 2026
Country/Territory	China
City	Hong Kong
Period	7/02/26 → 9/02/26
Internet address	https://www.imfw-ieee.org/

Bibliographical note

Keywords

Additive manufacturing (AM)
high-power filter
millimetre-wave components
novel materials
silver
waveguide

Access to Document

10.1109/IMFW64610.2026.11418989Licence: None: All rights reserved

QianL2026Monolithic_AAMAccepted author manuscript, 736 KBLicence: Creative Commons: Attribution (CC BY)

Additive Manufacturing of Precious Metals with Improved Resilience and Multi Functionality
Attallah, M. (Researcher) & Cai, B. (Principal Investigator)
Cookson Precious Metals Ltd, Engineering & Physical Science Research Council
1/01/24 → 31/12/26
Project: Research
Midlands mm-Wave Lab: A versatile electromagnetic characterisation suite for future RF to millimetre-wave communication and sensing systems
Cherniakov, M. (Co-Investigator), Navarro-Cia, M. (Co-Investigator), Feresidis, A. (Co-Investigator), Hanham, S. (Co-Investigator) & Constantinou, C. (Principal Investigator)
Engineering & Physical Science Research Council
1/01/23 → 31/12/27
Project: Research Councils

Cite this

@inproceedings{0ecf70cc84d841dd9c82bf01104fffde,

title = "Monolithic Q-band Waveguide Filter using 3D-Printed Silver",

abstract = "This paper presents the design, fabrication, and measurement of a Q-band waveguide bandpass filter fabricated using 3D-printed sterling silver. While aluminum alloys are common in additively manufactured microwave components, silver offers superior electrical and thermal conductivity. A stepped-impedance waveguide filter was fabricated using optimized Laser Powder Bed Fusion parameters to achieve high density and conductivity. RF measurements demonstrated a 0.8 dB minimum insertion loss and 17 dB worst-case return loss within the 37.5-42.5 GHz band. These results validate the feasibility of silver 3D printing for high-performance microwave devices.",

keywords = "Additive manufacturing (AM), high-power filter, millimetre-wave components, novel materials, silver, waveguide",

author = "Lu Qian and Parastoo Jamshidi and Attallah, \{Moataz M.\} and Yi Wang",

note = "Publisher Copyright: Copyright {\textcopyright} 2026, IEEE; 2026 IEEE International Microwave Filter Workshop, IMFW 2026 ; Conference date: 07-02-2026 Through 09-02-2026",

year = "2026",

month = mar,

day = "10",

doi = "10.1109/IMFW64610.2026.11418989",

language = "English",

isbn = "9798331550455",

series = "Microwave Filter Workshop (IMFW), IEEE MTT-S International",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

booktitle = "2026 IEEE International Microwave Filter Workshop (IMFW)",

url = "https://www.imfw-ieee.org/",

}

Qian, L, Jamshidi, P, Attallah, MM & Wang, Y 2026, Monolithic Q-band Waveguide Filter using 3D-Printed Silver. in 2026 IEEE International Microwave Filter Workshop (IMFW). Microwave Filter Workshop (IMFW), IEEE MTT-S International, Institute of Electrical and Electronics Engineers (IEEE), 2026 IEEE International Microwave Filter Workshop, Hong Kong, China, 7/02/26. https://doi.org/10.1109/IMFW64610.2026.11418989

Monolithic Q-band Waveguide Filter using 3D-Printed Silver. / Qian, Lu; Jamshidi, Parastoo; Attallah, Moataz M. et al.
2026 IEEE International Microwave Filter Workshop (IMFW). Institute of Electrical and Electronics Engineers (IEEE), 2026. (Microwave Filter Workshop (IMFW), IEEE MTT-S International).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Monolithic Q-band Waveguide Filter using 3D-Printed Silver

AU - Qian, Lu

AU - Jamshidi, Parastoo

AU - Attallah, Moataz M.

AU - Wang, Yi

PY - 2026/3/10

Y1 - 2026/3/10

N2 - This paper presents the design, fabrication, and measurement of a Q-band waveguide bandpass filter fabricated using 3D-printed sterling silver. While aluminum alloys are common in additively manufactured microwave components, silver offers superior electrical and thermal conductivity. A stepped-impedance waveguide filter was fabricated using optimized Laser Powder Bed Fusion parameters to achieve high density and conductivity. RF measurements demonstrated a 0.8 dB minimum insertion loss and 17 dB worst-case return loss within the 37.5-42.5 GHz band. These results validate the feasibility of silver 3D printing for high-performance microwave devices.

AB - This paper presents the design, fabrication, and measurement of a Q-band waveguide bandpass filter fabricated using 3D-printed sterling silver. While aluminum alloys are common in additively manufactured microwave components, silver offers superior electrical and thermal conductivity. A stepped-impedance waveguide filter was fabricated using optimized Laser Powder Bed Fusion parameters to achieve high density and conductivity. RF measurements demonstrated a 0.8 dB minimum insertion loss and 17 dB worst-case return loss within the 37.5-42.5 GHz band. These results validate the feasibility of silver 3D printing for high-performance microwave devices.

KW - Additive manufacturing (AM)

KW - high-power filter

KW - millimetre-wave components

KW - novel materials

KW - silver

KW - waveguide

UR - https://www.imfw-ieee.org/files/Call_for_Papers_IMFW2026.pdf

U2 - 10.1109/IMFW64610.2026.11418989

DO - 10.1109/IMFW64610.2026.11418989

M3 - Conference contribution

AN - SCOPUS:105035990406

SN - 9798331550455

T3 - Microwave Filter Workshop (IMFW), IEEE MTT-S International

BT - 2026 IEEE International Microwave Filter Workshop (IMFW)

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 2026 IEEE International Microwave Filter Workshop

Y2 - 7 February 2026 through 9 February 2026

ER -

Monolithic Q-band Waveguide Filter using 3D-Printed Silver

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Fingerprint

Projects

Additive Manufacturing of Precious Metals with Improved Resilience and Multi Functionality

Midlands mm-Wave Lab: A versatile electromagnetic characterisation suite for future RF to millimetre-wave communication and sensing systems

Cite this