Miniature Wilkinson Divider and Hybrid, Coupler with Harmonic Suppression, Using T-Shaped Transmission Line

Srisathit, K.; Jadpum, P.; Surakampontorn, W.

doi:10.1109/apmc.2007.4554846

Cited by 10 publications

(11 citation statements)

References 6 publications

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“…Although in [7], the spiral compact microstrip resonance (SCMR) cell has been proposed for harmonic suppression and size reduction, the SCMR cell needs high impedance microstrip transmission line for resonator, and its fabrication is a little complex. In [8], by using the T-shaped transmission lines and in [9] by using the P-shaped transmission lines, compact BLCs which can suppress upper order harmonics are achieved. However, straight stubs are not desirable at higher the frequencies with low line characteristic impedances.…”

Section: Introductionmentioning

confidence: 99%

“…Also, modern microwave systems require harmonic suppression of the BLC to avoid interband and interaband interference. Recently, a few design methods have been introduced for miniaturization and harmonic suppression of the BLC [5,6,7,8,9]. In [5,6], the defected ground structure (DGS) and microstrip electromagnetic bandgap (EBG) structure are proposed to suppress upper order harmonics and miniaturization of the conventional BLC.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturization and harmonic suppression of the branch-line coupler based on radial stubs

Hazeri

Kashaninia

Faraji

et al. 2011

IEICE Electron. Express

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Abstract:In this article, a compact branch-line hybrid coupler (BLC) which can suppress upper order harmonics of the conventional BLC is proposed. By adding a radial stub in the center of each branch, a compact BLC which can suppress the upper order harmonics are achieved. The proposed BLC is designed and simulated at 0.93 GHz. The proposed structure is 27% of the conventional BLC, while maintaining the characteristics of the conventional BLC at the center frequency. There are two transmission zeroes at 3.6 and 5.6 GHz. The third upto seventh harmonic are suppressed at least 20 dB. Keywords: branch-line hybrid coupler, compact size, harmonic suppression, microstrip transmission line, radial stub Classification: Microwave and millimeter wave devices, circuits, and systems References[1] S. Jung, R. Negra, and F. M. Ghannouchi, "A design methodology for miniaturized 3-db branch-line hybrid couplers using distributed capacitors printed in the inner area," IEEE Trans.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Miniaturization and harmonic suppression of the branch-line coupler based on radial stubs

Hazeri

Kashaninia

Faraji

et al. 2011

IEICE Electron. Express

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“…Then, in contrast to the techniques proposed in [1][2][3][4][5][6][7][8][9][10] and [13] in which lumped elements and/or extra microstrip lines were incorporated into the conventional design of passive microwave components, these NTLTs are used in the design of miniaturized multi-band BPDs. Specifically, a miniaturized triple-frequency 3-way BPD and a compact single-band 5-way BPD with harmonics suppression are designed.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, parallel combinations of capacitors and inductors were considered in the design. In [2], reduced size WPD and branch line coupler with harmonics suppression were proposed using T-shaped structure, where additional microstrip stubs had to be added to the conventional design. In [3], a WPD with size reduction of 68% and higher harmonics suppression was achieved.…”

Section: Introductionmentioning

confidence: 99%

Non-Uniform Transmission Line Transformers and Their Application in the Design of Compact Multi-Band Bagley Power Dividers With Harmonics Suppression

Shamaileh¹,

Qaroot²,

Dib³

2011

PIER

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Abstract-In this paper, the application of compact non-uniform transmission line transformers (NTLTs) in suppressing and controlling the odd harmonics of the fundamental frequency is presented. A design example showing the complete suppression of the odd harmonics of the fundamental frequency is given. In addition, several compact NTLTs are designed showing the possibility of controlling the existence of a fundamental frequency's odd harmonics. Moreover, multi-band operation using NTLTs is investigated. Specifically, a design example of a miniaturized triple-frequency NTLT is introduced. Based on these compact NTLTs, a 3-way triple-frequency modified Bagley power divider (BPD) with a size reduction of 50%, and a 5-way modified BPD with harmonics suppression and size reduction of 34%, are designed. For verification purposes, both dividers are simulated using the two full-wave simulators IE3D and HFSS. Moreover, the modified 5-way BPD with harmonics suppression is fabricated and measured. Both the simulation and measurement results validate the design approach.

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“…Papers [13,14] report Wilkinson PD with harmonic suppression by using shunt stubs with even-odd mode analysis method. Structures without reactive components by using equivalent symmetrical Π-shaped or T-shaped TL model are used to achieve harmonic suppression performance in Wilkinson PD, hybrids and coupler [15][16][17][18]. These designs use ABCD matrix TL analysis method, and the equivalent replacement method offers flexible design process and layout.…”

Section: Introductionmentioning

confidence: 99%

Modified Gysel Power Divider With Harmonic Supperssion Performance

Guan

Zhang²,

Sun³

et al. 2012

PIER C

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Abstract-This paper presents a modified Gysel power divider (PD) with harmonic suppression performance by utilizing equivalent Π-shaped, T-shaped and Π-T-hybrid-shaped open stubs transmission line (TL) models. Explicit closed-form expressions for generating parameters of the equivalent TL models are derived based on the ABCD matrix analysis. The proposed PD not only features suppression at the hoped harmonic frequencies and flexible layout, but also maintains Gysel PD's high power handling advantage. For demonstration, the simulated and experimental results of three proposed PDs at 1 GHz implemented on microstrip are given.

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Miniature Wilkinson Divider and Hybrid, Coupler with Harmonic Suppression, Using T-Shaped Transmission Line

Cited by 10 publications

References 6 publications

Miniaturization and harmonic suppression of the branch-line coupler based on radial stubs

Miniaturization and harmonic suppression of the branch-line coupler based on radial stubs

Non-Uniform Transmission Line Transformers and Their Application in the Design of Compact Multi-Band Bagley Power Dividers With Harmonics Suppression

Modified Gysel Power Divider With Harmonic Supperssion Performance

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