Six-Channel Diplexer using Stub-Loaded Stepped Impedance Resonators

Authors

  • Jinlin Liu National Laboratory of Science and Technology on Antennas and Microwaves Xidian University, Xi’an, 710071, China
  • Tao Su National Laboratory of Science and Technology on Antennas and Microwaves Xidian University, Xi’an, 710071, China
  • Huanhuan Lv National Laboratory of Science and Technology on Antennas and Microwaves Xidian University, Xi’an, 710071, China
  • Lei Lin National Laboratory of Science and Technology on Antennas and Microwaves Xidian University, Xi’an, 710071, China
  • Bian Wu National Laboratory of Science and Technology on Antennas and Microwaves Xidian University, Xi’an, 710071, China

Keywords:

Bandpass filters, six-channel diplexer, stub-loaded stepped impedance resonators, stub-stub coupling

Abstract

In this paper, a compact six-channel diplexer with low insertion loss and high isolation level is presented. The diplexer consists of two tri-band bandpass filters (BPFs), two meander transmission lines and hookshaped feeding lines. The BPFs are designed based on stub-loaded stepped impedance resonators (SLSIRs). Based on even- and odd-mode (EOM) analysis of the resonator, there are two resonant modes that operate at the same frequency. For splitting the two modes, stubstub coupling is employed here. The combination of the two BPFs is implemented by utilizing two meander transmission lines as the impedance matching network. Finally the proposed diplexer operating at 1.46/1.74/2.96 GHz (for Load 1) and 0.89/1.15/2.40 GHz (for Load 2) is fabricated and measured. A good agreement between simulated and measured results evidently validates the proposed diplexer.

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References

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Published

2019-10-01

How to Cite

[1]
Jinlin Liu, Tao Su, Huanhuan Lv, Lei Lin, and Bian Wu, “Six-Channel Diplexer using Stub-Loaded Stepped Impedance Resonators”, ACES Journal, vol. 34, no. 10, pp. 1582–1587, Oct. 2019.

Issue

2019: Vol 34 Iss 10

Section

Articles