Volume 30 Issue 6
Jun.  2018
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Article Navigation >  High Power Laser and Particle Beams  > 2018  >  30(6): 063004
Chen Xi, Fu Jiwei, Wu Qiang, et al. Evaluation method for shielding effectiveness cabins in complex transportable systems[J]. High Power Laser and Particle Beams, 2016, 28: 113203. doi: 10.11884/HPLPB201628.160116
Citation: Bao Xin, Zhang Dewei, Deng Hailin, et al. Ka-band wideband harmonic-suppression directional coupler[J]. High Power Laser and Particle Beams, 2018, 30: 063004. doi: 10.11884/HPLPB201830.170405
shu

Ka-band wideband harmonic-suppression directional coupler

doi: 10.11884/HPLPB201830.170405

  • Institute of Information System Engineering, PLA Information Engineering University, Zhengzhou 450001, China

  • Received Date: 2017-10-20
  • Rev Recd Date: 2018-01-20
  • Publish Date: 2018-06-15
    Abstract
  • In order to solve the problem that the traditional directional coupler has a narrow bandwidth and is greatly influenced by harmonic signals, this paper presents a broadband directional coupler with the function of harmonic suppression. The directional coupler adds a branch section to double-branch-line directional coupler, thus can effectively improve the bandwidth. While its transmission lines are added with low-pass filter structures, it can filter harmonics well. The experimental results show that the directional coupler reflection coefficient and isolation are less than -15 dB, the transmission loss is more than -3.8 dB, the fluctuation range is 0.5 dB and the phase difference is 90°. It satisfies the design requirement of coupler, and can be applied to microwave components to improve the performance.
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    • References(10)
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