Wilkinson Power Divider With Complex Isolation Component and Its Miniaturization

Wang, Xiaolong; Iwata, Shuichi; Mase, A.; Ichimura, M.

doi:10.1109/tmtt.2014.2300835

Cited by 51 publications

(40 citation statements)

References 13 publications

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“…For a parallel connection of two one-port networks shown in Fig. 4, the perfect match condition requires (14) where is the normalized input impedance of the first block and is the input reflection coefficient of the second block giving the perfect match.…”

Section: Optimal Choice Of Isolation Network In the Even And Oddmentioning

confidence: 99%

“…The reflection coefficients and of the even and odd mode isolation circuits that will generate a perfect match can be calculated using (14), (15), and (16):…”

Section: Optimal Choice Of Isolation Network In the Even And Oddmentioning

confidence: 99%

“…The main disadvantage of using multi sections is the increase in the length and the insertion loss of the divider. To avoid this, a number of researchers designed reduced size dividers [11]- [14]. Another approach to improve the bandwidth response of the Wilkinson divider aims dual band operation.…”

Section: Introductionmentioning

confidence: 99%

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An Optimized Isolation Network for the Wilkinson Divider

Tas

Atalar

2014

IEEE Trans. Microwave Theory Techn.

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Cataloged from PDF version of article.We propose an isolation network to simultaneously\ud improve the input return loss, output return loss and isolation of\ud the Wilkinson power divider in a wide bandwidth. The required\ud even mode and odd mode reflection coefficients of the isolation network\ud are calculated. Constructed even and odd mode circuits are\ud combined to give the desired isolation network. Analytical expressions\ud for the optimal component values for a single-section divider\ud are given. Compared with the single-section Wilkinson divider, the\ud final design can triple the bandwidth for an input-output return\ud loss and isolation of greater than 25 dB. Broadband characteristic\ud is achieved without increasing the number of sections hence extra\ud length and insertion loss are avoided. Wide operation bandwidth\ud of the new divider is verified by experimental results. The proposed\ud method can be applied to a two-section divider, also broadening its\ud bandwidth

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Section: Optimal Choice Of Isolation Network In the Even And Oddmentioning

confidence: 99%

“…The reflection coefficients and of the even and odd mode isolation circuits that will generate a perfect match can be calculated using (14), (15), and (16):…”

Section: Optimal Choice Of Isolation Network In the Even And Oddmentioning

confidence: 99%

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An Optimized Isolation Network for the Wilkinson Divider

Tas

Atalar

2014

IEEE Trans. Microwave Theory Techn.

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“…1, where two straight 90°transmission lines are replaced by two S-type sections. Compared with the previous works [9,10,11], by using the newly derived equations, S-type section could provide self-compensation in microstrip line structure, no extra compensation structures or components are needed. The elements of the scattering matrix must satisfy the following equations at f 0 : (2) and (3) can be summarized as …”

Section: Introductionmentioning

confidence: 96%

“…Theoretically, coupled line section WPDs [7,8] could be only designed in stripline structure, where the electrical lengths between even-and odd-mode are defined equally. Under the condition of microstrip line structure, extra lumped elements and extra coupled line section are compensated the characteristic impedance and phase difference [9,10,11].…”

Section: Introductionmentioning

confidence: 99%

Accurate Schiffman-type section design approach for microstrip line Wilkinson power divider

Wang

Ohira

2016

IEICE Electron. Express

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In this paper, a novel accurate Schiffman-type (S-type) section design approach is presented for microstrip line Wilkinson power divider. S-type section replaces straight 90°transmission line with compact circuit size and easy fabrication, isolation condition between two output ports is also maintained in microstrip line structure. Mathematical equations for S-type section are derived from even-and odd-mode equivalent circuit analysis, and several selected examples have been proved that: through adjusting the evenand odd-mode characteristic impedances and their electrical lengths of S-type section, proposed Wilkinson power divider provides perfect matching in microstrip line structure; in other words, S-type section could provide selfcompensation in microstrip line structure, no extra compensation structure is needed. In experiment, one circuit was fabricated, and experimental results showed good agreement with theoretical results.

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A Distributed retro‐reflective beamformer for wireless power transmission

Wang

Guo

et al. 2015

Micro & Optical Tech Letters

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This letter demonstrates a wireless power transmission scheme based on distributed retro‐reflective beamforming experimentally. The wireless power transmitter, which includes eight antennas distributed in space, receives pilot signals from a mobile device and then focuses radio frequency power onto the device's location through analyzing the pilot signals. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1873–1876, 2015

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Wilkinson Power Divider With Complex Isolation Component and Its Miniaturization

Cited by 51 publications

References 13 publications

An Optimized Isolation Network for the Wilkinson Divider

An Optimized Isolation Network for the Wilkinson Divider

Accurate Schiffman-type section design approach for microstrip line Wilkinson power divider

A Distributed retro‐reflective beamformer for wireless power transmission

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