Active diplexer based on isolation circuits imbedded low noise amplifiers

Hanseung Lee; Jun H. Choi; Tatsuo Itoh

doi:10.1109/EuMC.2015.7345800

Active diplexer based on isolation circuits imbedded low noise amplifiers

Hanseung Lee, Jun H. Choi, Tatsuo Itoh

Department of Electrical Engineering & Computer Science

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

3 Scopus citations

Abstract

In this paper, a novel active diplexer based on low-noise amplifiers (LNAs) using multi-functional composite right/left-handed input matching circuit (CRLH-IMC) is proposed. Since each CRLH-IMC has optimized impedance for targeted LNA performances as well as the required isolation characteristics, an active diplexer with gain and low noise figure (NF) can be realized by placing a single input port between two LNAs with CRLH-IMCs. The proposed active diplexer can reduce overall system dimension and loss by removing passive diplexer. In addition, diplexer performances such as insertion loss and isolations can now be controlled by an amplifier design. In this paper, the active diplexer prototype operating at 1.5 GHz and 2.6 GHz is designed and fabricated. The measured results show good agreement with the simulated results.

Original language	English (US)
Title of host publication	European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 45th European Microwave Conference Proceedings, EuMC
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	462-465
Number of pages	4
ISBN (Print)	9782874870392
DOIs	https://doi.org/10.1109/EuMC.2015.7345800
State	Published - Dec 2 2015
Event	45th European Microwave Conference, EuMC 2015 - Paris, France Duration: Sep 7 2015 → Sep 10 2015

Other

Other	45th European Microwave Conference, EuMC 2015
Country/Territory	France
City	Paris
Period	9/7/15 → 9/10/15

Keywords

Composite right/left handed (CRLH)
diplexer
isolation circuit
low noise amplifier (LNA)

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Radiation

Access to Document

10.1109/EuMC.2015.7345800

Cite this

Lee, H., Choi, J. H., & Itoh, T. (2015). Active diplexer based on isolation circuits imbedded low noise amplifiers. In European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 45th European Microwave Conference Proceedings, EuMC (pp. 462-465). [7345800] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EuMC.2015.7345800

Active diplexer based on isolation circuits imbedded low noise amplifiers. / Lee, Hanseung; Choi, Jun H.; Itoh, Tatsuo.

European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 45th European Microwave Conference Proceedings, EuMC. Institute of Electrical and Electronics Engineers Inc., 2015. p. 462-465 7345800.

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

Lee, H, Choi, JH & Itoh, T 2015, Active diplexer based on isolation circuits imbedded low noise amplifiers. in European Microwave Week 2015: "Freedom Through Microwaves", EuMW 2015 - Conference Proceedings; 2015 45th European Microwave Conference Proceedings, EuMC., 7345800, Institute of Electrical and Electronics Engineers Inc., pp. 462-465, 45th European Microwave Conference, EuMC 2015, Paris, France, 9/7/15. https://doi.org/10.1109/EuMC.2015.7345800

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title = "Active diplexer based on isolation circuits imbedded low noise amplifiers",

abstract = "In this paper, a novel active diplexer based on low-noise amplifiers (LNAs) using multi-functional composite right/left-handed input matching circuit (CRLH-IMC) is proposed. Since each CRLH-IMC has optimized impedance for targeted LNA performances as well as the required isolation characteristics, an active diplexer with gain and low noise figure (NF) can be realized by placing a single input port between two LNAs with CRLH-IMCs. The proposed active diplexer can reduce overall system dimension and loss by removing passive diplexer. In addition, diplexer performances such as insertion loss and isolations can now be controlled by an amplifier design. In this paper, the active diplexer prototype operating at 1.5 GHz and 2.6 GHz is designed and fabricated. The measured results show good agreement with the simulated results.",

keywords = "Composite right/left handed (CRLH), diplexer, isolation circuit, low noise amplifier (LNA)",

author = "Hanseung Lee and Choi, {Jun H.} and Tatsuo Itoh",

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doi = "10.1109/EuMC.2015.7345800",

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N2 - In this paper, a novel active diplexer based on low-noise amplifiers (LNAs) using multi-functional composite right/left-handed input matching circuit (CRLH-IMC) is proposed. Since each CRLH-IMC has optimized impedance for targeted LNA performances as well as the required isolation characteristics, an active diplexer with gain and low noise figure (NF) can be realized by placing a single input port between two LNAs with CRLH-IMCs. The proposed active diplexer can reduce overall system dimension and loss by removing passive diplexer. In addition, diplexer performances such as insertion loss and isolations can now be controlled by an amplifier design. In this paper, the active diplexer prototype operating at 1.5 GHz and 2.6 GHz is designed and fabricated. The measured results show good agreement with the simulated results.

AB - In this paper, a novel active diplexer based on low-noise amplifiers (LNAs) using multi-functional composite right/left-handed input matching circuit (CRLH-IMC) is proposed. Since each CRLH-IMC has optimized impedance for targeted LNA performances as well as the required isolation characteristics, an active diplexer with gain and low noise figure (NF) can be realized by placing a single input port between two LNAs with CRLH-IMCs. The proposed active diplexer can reduce overall system dimension and loss by removing passive diplexer. In addition, diplexer performances such as insertion loss and isolations can now be controlled by an amplifier design. In this paper, the active diplexer prototype operating at 1.5 GHz and 2.6 GHz is designed and fabricated. The measured results show good agreement with the simulated results.

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KW - isolation circuit

KW - low noise amplifier (LNA)

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Active diplexer based on isolation circuits imbedded low noise amplifiers

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