Design of Compact Quad-Channel Diplexer Using Quad-Mode Stub-Loaded Resonators

Lin, Lei; Zhao, Yutong; Wu, Bian; Liang, Chuntao

doi:10.2528/pierl15010901

Cited by 7 publications

(12 citation statements)

References 26 publications

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“…Therefore, several diplexers, triplexers and multiplexers have been designed using various microstrip structures [1][2][3][4][5][6][7][8][9]. Six-channel diplexers in [1,2], four-channel diplexers in [3,4], two-channel diplexers in [5,6], and eight-channel diplexer in [7] were introduced. In [1], magnetically quarter wavelength coupled step impedance resonators by grounded via hole were used to obtain six passbands at 1.575/1.8/2.4/3.5/5.2/5.8 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…In [1], magnetically quarter wavelength coupled step impedance resonators by grounded via hole were used to obtain six passbands at 1.575/1.8/2.4/3.5/5.2/5.8 GHz. The proposed structure in [1] provides relatively compact size but the multiplexers and diplexers in [2][3][4][5][6][7][8][9] take up a lot of space. A new method of harmonic suppression was applied to achieve six passbands at 10/12/19/21/32/35 (GHz) in [2].…”

Section: Introductionmentioning

confidence: 99%

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A six-channel microstrip diplexer for multi-service wireless communication systems

Fouladi

Rezaei

2020

Eng. rev. (Online)

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In this paper, a six-channel microstrip diplexer is designed and fabricated. It operates at 0.75/0.85/1/1.25/1.6/1.8 GHz for multi-service wireless communication systems. It consists of two stub-loaded resonators, which are integrated by coupled lines. The channels are close together, which makes the proposed diplexer suitable for frequency division duplex (FDD) schemes. The proposed structure has a compact size of 0.025 λg2 where λg is the guided wavelength calculated at 0.75 GHz. The other advantages of the introduced multi-channel diplexer are the low insertion losses of 1.62/1.27/0.43/0.53/1.26 and 1 dB, as well as good return losses of 26/26/25/25/21.7 and 22 dB at 0.75/0.85/1/1.25/1.6/1.8 GHz respectively. A good isolation of less than 22 dB is obtained between the channels. In order to design the presented diplexer a designing technique is used which is based on the proposing of an equivalent approximated LC model and calculating the inductors and capacitors. To confirm the simulation results, the introduced diplexer is fabricated and measured.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A six-channel microstrip diplexer for multi-service wireless communication systems

Fouladi

Rezaei

2020

Eng. rev. (Online)

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“…The matching network serves as a through pass at the center frequency (CF) of a bandpass filter and provides a short circuit at the CF of another bandpass filter . To obtain more compact multiplexers and increase the degree of freedom in design, source‐loaded coupling lines and common resonators are recently proposed. To further reduce the overall size, a coupling scheme of the quad‐channel diplexer is proposed in this letter, which needs neither source‐loaded coupling lines nor common resonators.…”

Section: Introductionmentioning

confidence: 99%

Microstrip quad‐channel diplexer using quad‐mode square ring resonators

Zhang

Pang

Wang

et al. 2019

Micro & Optical Tech Letters

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A new compact microstrip quad‐channel diplexer using quad‐mode square ring resonators (QMSRRs) is proposed. The quad‐channel diplexer is composed of two QMSRRs. A structure consists of two QMSRRs together with one common input and two output coupling lines is proposed, which can remove the matching network and therefore reduce the absolute size of the diplexer. The proposed QMSRR has two transmission zeros at the frequencies between the four resonant frequencies, which can be controlled by changing the length and impedance ratio of the QMSRR. Simulation and measurement results show that the resultant diplexer is of a small circuit size and a high isolation.

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“…Six bands has been realized at (1.9/2.4, 3.5/4.2 and 5.2/5.8 GHz) with compact circuit size, high isolation and low insertion loss. Lin et al2015 [16], presented miniature quad-channel diplexer utilizing quad-mode stub-loaded resonators (QMSLRs). This device has two dualband BPFsusing QMSLRs and source-load coupling lines.…”

Section: Introductionmentioning

confidence: 99%

New Microstrip Diplexer for Recent Wireless Applications

Mezaal¹,

Hashim²,

H.Al-fatlawi³

et al. 2018

IJET

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In this study, dual-channel diplexer using microstrip open loop coupled resonators has been designed and simulated; each channel has two operating band frequencies. This microstrip diplexer is designed for (1.424/1.732GHz) for first channel and (2.014/2.318GHz) for second channel. The simulated results for this device have insertion loss (1.8 and 1 dB) at load 1, and (1.5 and 3 dB) at load 2. Additionally, it has reasonable return loss magnitudes better than 10 dB and effective isolation between channels of35 dB. The proposed design has shown an uncomplicated topology, an effectual design method, small circuit size and narrowband frequency responses that are fitting for multi service wireless schemes.

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Design of Compact Quad-Channel Diplexer Using Quad-Mode Stub-Loaded Resonators

Cited by 7 publications

References 26 publications

A six-channel microstrip diplexer for multi-service wireless communication systems

A six-channel microstrip diplexer for multi-service wireless communication systems

Microstrip quad‐channel diplexer using quad‐mode square ring resonators

New Microstrip Diplexer for Recent Wireless Applications

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