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A Novel Design of an H-shaped Microstrip Diplexer

A. Chinig et al · Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo

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Author / responsible party
A. Chinig et al
Publisher
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo
ISSN
2179-1074
ISSN
2179-1074
Language
English

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Abstract In this paper, a new microstrip diplexer using modified H-shaped resonators with a compact size and high isolation is presented. This circuit is designed for the ISM band at 2.4 GHz and GPS at 1.575 GHz. The proposed diplexer is formed by connecting two band-pass filters designed by using the modified H-shaped resonator and tapped microstrip Input/output (I/O) lines. An analytic study of the H-shaped resonator and an equivalent LC model of the proposed H-shaped band-pass filter were introduced. Two cross-slots are etched in the ground plane of the proposed microstrip diplexer in order to enhance its electrical performances and to set the pass bands at low frequencies. The circuit with defected ground structure is able to operate at the GPS L1 and L2 bands. The electrical performances of the diplexer are investigated numerically by using Momentum integrated in ADS from Agilent technologies and verified with another electromagnetic software CST microwave Studio.

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APA 7

al, A. C. E. (s. f.). A Novel Design of an H-shaped Microstrip Diplexer. https://doi.org/10.1590/2179-10742017v16i4968

MLA

al, A. Chinig et. "A Novel Design of an H-shaped Microstrip Diplexer.". https://doi.org/10.1590/2179-10742017v16i4968.

Chicago

al, A. Chinig et. s. f. "A Novel Design of an H-shaped Microstrip Diplexer.". https://doi.org/10.1590/2179-10742017v16i4968.

Harvard

al, A. C. E. s. f, A Novel Design of an H-shaped Microstrip Diplexer, Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo, available at: https://doi.org/10.1590/2179-10742017v16i4968 [Accessed 9 Aug. 2026].

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Title
A Novel Design of an H-shaped Microstrip Diplexer
Author / contributors
A. Chinig et al
Publisher
Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo
ISSN
2179-1074
ISSN
2179-1074
Language
English

Subjects

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Band pass filters; Diplexer; Isolation; LC model; Microstrip technology
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