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PIER PIER B PIER C PIER M PIER Letters
2013-03-08
A Broadband Out-of-Phase Power Divider for High Power Applications Using through Ground via (Tgv)
By
Yun Long Lu,

    Dr. Yun Long Lu

    Department of Information Science and Electronic Engineering

    Zhejiang University

    China

    Homepage

Gao-Le Dai,

    Dr. Gao-Le Dai

    Department of Information Science and Electronic Engineering

    Zhejiang University

    China

    Homepage

Xingchang Wei,

    Dr. Xingchang Wei

    Department of Information Science and Electronic Engineering

    Zhejiang University

    China

    Homepage

Erping Li

    Dr. Erping Li

    Department of Information Science and Electronic Engineering

    Zhejiang University

    China

    Homepage

Progress In Electromagnetics Research, Vol. 137, 653-667, 2013
doi:10.2528/PIER13010705
Abstract
In this paper, we present a broadband out-of-phase power divider with high power-handling capability. The proposed device consists of several sections of double-sided parallel-strip lines (DSPSLs), a mid-inserted conductor plane, and two external isolation resistors, which are directly grounded for heat sinking. A through ground via (TGV), connecting the top and bottom sides of DSPSLs, is employed. The special metal via is realized to short the isolation resistors at full-frequency band when the odd-mode is excited. Meanwhile, it can be ignored as the excitation is even-mode. This property is efficiently utilized to improve the bandwidth. To examine the proposed power divider in detail, a set of closed-form equations are derived. Meanwhile, the power operation analysis illustrates that the proposed power divider is a good candidate for high power applications. The design charts show that the proposed device can support a wide frequency ratio range (1-1.7). Furthermore, broadband responses can be obtained when proper frequency ratios are adopted. For verification, an experimental power divider operating at 1.25/1.75 GHz is implemented. The measured results exhibit a bandwidth of 44.3% with better than 15 dB return loss and 18 dB port isolation is achieved.
Citation
Yun Long Lu, Gao-Le Dai, Xingchang Wei, and Erping Li, "A Broadband Out-of-Phase Power Divider for High Power Applications Using through Ground via (Tgv)," Progress In Electromagnetics Research, Vol. 137, 653-667, 2013.
doi:10.2528/PIER13010705
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