Inline Waveguide Filter With Transmission Zeros Using a Modified-T-Shaped-Post Coupling Inverter

Muhammad Yameen Sandhu; Maciej Jasiński; Adam Lamęcki; Roberto Gomez-Garcia; Michał Mrozowski

doi:10.1109/lmwc.2022.3208141

Inline Waveguide Filter With Transmission Zeros Using a Modified-T-Shaped-Post Coupling Inverter

Abstract

This letter reports the design techniques for a class 2 of inline waveguide bandpass filters with sharp-rejection capabil3 ities at the lower stopband based on a novel nonlinear-frequency4 variant-coupling (NFVC) structure. The proposed NFVC consists 5 of a modified-T-shaped metallic post (MTP) that is placed at the 6 center of the waveguide broad wall with its open arms lying 7 along the waveguide width. The engineered NFVC structure 8 produces a first-order bandpass filtering transfer function with 9 a pair of transmission zeros (TZs) located below the passband 10 range. To demonstrate the usefulness of the proposed NFVC 11 inverter, a 9.9-GHz third-order inline waveguide bandpass filter 12 prototype with two TZs is developed and tested. It consists of 13 two half-wavelength cavity resonators coupled together via the 14 conceived MTP coupling structure. The measured results are in 15 close agreement with the electromagnetic (EM) simulated ones, 16 thus validating the devised waveguide filter design principle

Citations

3

CrossRef
0

Web of Science
4

Scopus

Authors (5)

Muhammad Yameen Sandhu
- Sukkur IBA University
Maciej Jasiński
Adam Lamęcki dr hab. inż.
Roberto Gomez-Garcia
- University of Alcalá
Michał Mrozowski prof. dr hab. inż.

Cite as

Full text

full text is not available in portal

full content of the article see on external site open in new tab

Keywords

3-D FILTER, BANDPASS FILTER, COUPLING-MATRIX SYN18 THESIS, FREQUENCY-DEPENDENT COUPLING, INLINE FILTER, MICROWAVE 19 FILTER, TRANSMISSION ZERO (TZ), WAVEGUIDE FILTER.

Details

Category:

Articles

Type:

artykuły w czasopismach

Published in:

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS no. 33, pages 145 - 148,
ISSN: 1531-1309

Language:

English

Publication year:

2023

Bibliographic description:

Sandhu M. Y., Jasiński M., Lamęcki A., Gomez-Garcia R., Mrozowski M.: Inline Waveguide Filter With Transmission Zeros Using a Modified-T-Shaped-Post Coupling Inverter// IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS -Vol. 33,iss. 2 (2023), s.145-148

DOI: