A planar dual 180° hybrid using multicoupled line sections

Yu Ann Lai, Chun Nien Chen, Young Hsing Chang, Yeong Her Wang

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A novel planar dual 180° hybrid using multicoupled line technology is presented. The proposed structure adopts the power divider and two types of multicoupled lines to improve the return loss and isolation at the balance outputs of a traditional dual Marchand balun. The proposed hybrid allows output ports to be located arbitrarily, which eliminates the complex layout while the dual 180° hybrid applied to balanced radio frequency circuits. This hybrid is designed and implemented on an FR-4 printed circuit board at 2.4 GHz. The measured return loss is lower than - 19.7 dB, and the isolation between the two-pair balanced output ports are lower than - 28.2 dB from 2.2 to 2.7 GHz. The measured insertion loss and phase imbalance between the two-pair balanced output ports are lower than 8.7 dB and 4.5°, respectively, at the operating frequency of 2.12.9 GHz.

Original languageEnglish
Article number5706383
Pages (from-to)68-70
Number of pages3
JournalIEEE Microwave and Wireless Components Letters
Volume21
Issue number2
DOIs
Publication statusPublished - 2011 Feb 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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