Two- and Three-Way Filtering Power Dividers With Harmonic Suppression Using Triangle Patch Resonator

Yanyuan Zhu, Jianpeng Wang, Jiasheng Hong, Jian-Xin Chen, Wen Wu

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Abstract

This paper presents a new approach to design filtering power dividers (FPD) with regular triangle patch resonator (RTPR). According to the electric-field (E-field) distributions of the resonator modes, the TM₁₀ and TM₁₁ modes have been selected to realize two- and three-way power dividers respectively, showcasing the flexible characteristic of the RTPR. Afterwards, an in-phase multiway excitation scheme for the RTPR is developed to well excite the designated modes and suppress multiple spurious modes, simultaneously. Subsequently, to further reject the harmonics so as to extend the upper stopband greatly, shorting posts are deployed at the locations with null electric field distribution for the specified operation mode. Ultimately, to validate the design concept, a two-way and a three-way second-order FPD employed at TM₁₀ (f₁₀= 1.27GHz) with fractional bandwidth (FBW) of 7% and at TM₁₁ (f₁₁= 2.2GHz) with FBW of 4.5% are designed and measured. The measured results of the two fabricated circuits well agree with the simulated ones. Results indicate that both of the two FPDs exhibit properties of good port-to-port isolation, high selectivity with transmission zeros near both sides of the passband, as well as wide stopband extended to 3.35 and 2.9 times of fundamental operation frequencies, respectively.
Original languageEnglish
JournalIEEE Transactions on Circuits and Systems I: Regular Papers
Early online date21 Sep 2021
DOIs
Publication statusE-pub ahead of print - 21 Sep 2021

Keywords

  • Filtering power divider (FPD)
  • harmonic suppression.
  • Harmonics suppression
  • Manganese
  • multiway excitation
  • Power dividers
  • Power harmonic filters
  • Prototypes
  • regular triangle patch resonator (RTPR)
  • Resistors
  • Substrates

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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