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  1. 161

    Open-ended microwave oven with E-field uniformity by Jeong-Hun Park, Jee-Won Kim, Moon-Que Lee

    Published 2025-02-01
    “…The second and third dielectrics, shifting the field along a longitudinal direction, increase the E-field intensities in the center region and perimeter region, respectively, on the external surface of the dielectric-air interface. …”
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    Epidemiology of hereditary eye disease in the populations of Russian Federation by V.V. Kadyshev, E.K. Ginter, S.I. Kutsev, Zh.G. Oganezova, R.A. Zinchenko

    Published 2022-05-01
    “…Zinchenko<sup>1,3</sup></b> </p> <p> <b><sup>1</sup>Research Center for Medical Genetics, Moscow, Russian Federation</b> </p> <p> <b><sup>2</sup>Pirogov Russian National Research Medical University, Moscow, Russian Federation</b> </p> <p> <b><sup>3</sup>N.A. …”
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    Design of microwave ceramic waveguide filter with high out-of-band suppression characteristics by Fei LIANG, Shunliang MENG, Wenzhong LYU

    Published 2021-04-01
    “…The design theory of ceramic waveguide filter was introduced, and then the combination structure of coupling through slot with shallow or deep coupling blind hole was designed, which could meet the requirements of positive and negative coupling bandwidth.By adjusting the cross coupling between 3~6 cavities, the symmetry of the filter transmis-sion curve was improved, and the near and far end band suppression of the filter was realized.Finally, a six-cavity ce-ramic waveguide filter for 5G base station was designed.In the process of optimizing the filter, the influences of the rela-tive position offset of the cross-coupling through slot and the length of the cross-coupling through slot on the transmis-sion zero position, the near end and far end out of band suppression characteristics of the filter were discussed in detail, and the relevant change rules were given.The performance indexes of the optimized filter were as follows, center fre-quency was 3.5 GHz, working bandwidth was 200 MHz, insertion loss ≤ 1.2 dB, return loss ≥ 17 dB, near end out of band rejection ≥ 25 dB, far end out of band rejection ≥ 51 dB.According to the structural parameters of the simulation model, the performance test results of the samples are in good agreement with the simulation results.…”
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  13. 173

    Design of a Suspended Stripline Narrow Bandpass Filter with Ultrawideband Harmonic Suppression by Ju Seong Park, Wahab Mohyuddin, Hyun Chul Choi, Kang Wook Kim

    Published 2018-01-01
    “…As an example of the NBPF, a filter with a passband center frequency f0 of 0.75 GHz and bandwidth of 5% was implemented and proved to suppress the harmonic passbands up to 13.5 f0. …”
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    A Novel Compact Wideband Bandpass Filter With High Upper Stopband Rejection by Qijun Lu, Jiawei Sun, Hao Zhang, Tao Zhang, Zhangming Zhu

    Published 2025-01-01
    “…This paper presents a novel compact wideband quadruple-mode bandpass filter (BPF) with four resonant modes and five transmission zeros (TZs). …”
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