Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures

Seunggoo Nam; Boyoung Lee; Ju Seop Lee

doi:10.1109/MWSYM.2017.8059093

Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures

Seunggoo Nam, Boyoung Lee, Ju Seop Lee

Division of Computer and Communication Engineering

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

7 Citations (Scopus)

Abstract

A new half-mode frequency-tunable SIW (substrate-integrated waveguide) bandpass filter with a constant absolute bandwidth is presented in this paper. For achieving the constant bandwidth, we have developed new external and internal coupling structures capable of exhibiting specified coupling values over the frequency tuning range of the presented filter. Hence, the presented filter employs no tuning components in the coupling structures and this avoids the insertion loss increase due to tuning components. For verification, a second-order filter has been designed, fabricated, and measured. The filter has the insertion loss smaller than 2.0 dB over the frequency tuning range from 1.85 GHz to 2.3 GHz. The bandwidth slightly varies from 136 MHz to 142 MHz.

Original language	English
Title of host publication	2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	267-270
Number of pages	4
ISBN (Electronic)	9781509063604
DOIs	https://doi.org/10.1109/MWSYM.2017.8059093
Publication status	Published - 2017 Oct 4
Event	2017 IEEE MTT-S International Microwave Symposium, IMS 2017 - Honololu, United States Duration: 2017 Jun 4 → 2017 Jun 9

Other

Other	2017 IEEE MTT-S International Microwave Symposium, IMS 2017
Country	United States
City	Honololu
Period	17/6/4 → 17/6/9

Keywords

Absolute bandwidth
Bandpass filter
Half-mode
SIW
Tunable filter

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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Cite this

Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures. / Nam, Seunggoo; Lee, Boyoung; Lee, Ju Seop.

2017 IEEE MTT-S International Microwave Symposium, IMS 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 267-270 8059093.

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

Nam, S, Lee, B & Lee, JS 2017, Constant-absolute-bandwidth frequency-tunable half-mode SIW filter containing no tunable coupling structures. in 2017 IEEE MTT-S International Microwave Symposium, IMS 2017., 8059093, Institute of Electrical and Electronics Engineers Inc., pp. 267-270, 2017 IEEE MTT-S International Microwave Symposium, IMS 2017, Honololu, United States, 17/6/4. https://doi.org/10.1109/MWSYM.2017.8059093

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N2 - A new half-mode frequency-tunable SIW (substrate-integrated waveguide) bandpass filter with a constant absolute bandwidth is presented in this paper. For achieving the constant bandwidth, we have developed new external and internal coupling structures capable of exhibiting specified coupling values over the frequency tuning range of the presented filter. Hence, the presented filter employs no tuning components in the coupling structures and this avoids the insertion loss increase due to tuning components. For verification, a second-order filter has been designed, fabricated, and measured. The filter has the insertion loss smaller than 2.0 dB over the frequency tuning range from 1.85 GHz to 2.3 GHz. The bandwidth slightly varies from 136 MHz to 142 MHz.

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