First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design

Tae Hak Lee; Boyoung Lee; Juseop Lee

doi:10.1109/MWSYM.2016.7540235

First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design

Tae Hak Lee, Boyoung Lee, Juseop Lee

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

48 Citations (Scopus)

Abstract

This work presents design methods for first-order reflectionless lumped-element lowpass and bandpass filters. Each of the proposed filter structures contains an impedance matching circuit that can theoretically cancel out the reflected wave. We have derived the analytic design equations so that the reflectionless filters can be designed without using any sophisticated math techniques. In addition, by virtue of the design equations, the reflectionless lowpass and bandpass filters can be designed in a way to produce exactly the same transmitted power ratio as the conventional reflective filters. Both conventional reflective filters and proposed reflectionless filters have been fabricated and measured to verify the newly presented reflectionless filter design theory. The experimental results show that the proposed filter structures have excellent return loss performances in the stopbands as well as in the passbands. In addition, the measured transmitted power ratios of the reflectionless filters are not distinguishable of the reflective filters.

Original language	English
Title of host publication	2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509006984
DOIs	https://doi.org/10.1109/MWSYM.2016.7540235
Publication status	Published - 2016 Aug 9
Event	2016 IEEE MTT-S International Microwave Symposium, IMS 2016 - San Francisco, United States Duration: 2016 May 22 → 2016 May 27

Publication series

Name	IEEE MTT-S International Microwave Symposium Digest
Volume	2016-August
ISSN (Print)	0149-645X

Other

Other	2016 IEEE MTT-S International Microwave Symposium, IMS 2016
Country/Territory	United States
City	San Francisco
Period	16/5/22 → 16/5/27

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

Keywords

absorptive
first-order bandpass filter
first-order lowpass filter
impedance matching
lumped-element

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1109/MWSYM.2016.7540235

Cite this

Lee, T. H., Lee, B., & Lee, J. (2016). First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design. In 2016 IEEE MTT-S International Microwave Symposium, IMS 2016 Article 7540235 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2016-August). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2016.7540235

First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design. / Lee, Tae Hak; Lee, Boyoung; Lee, Juseop.
2016 IEEE MTT-S International Microwave Symposium, IMS 2016. Institute of Electrical and Electronics Engineers Inc., 2016. 7540235 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2016-August).

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

Lee, TH, Lee, B & Lee, J 2016, First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design. in 2016 IEEE MTT-S International Microwave Symposium, IMS 2016., 7540235, IEEE MTT-S International Microwave Symposium Digest, vol. 2016-August, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE MTT-S International Microwave Symposium, IMS 2016, San Francisco, United States, 16/5/22. https://doi.org/10.1109/MWSYM.2016.7540235

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First-order reflectionless lumped-element lowpass filter (LPF) and bandpass filter (BPF) design

Abstract

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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