Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

The Design of Broadband balun with good phase balance using ${\lambda}/4$ shorted stub

${\lambda}/4$ 단락 스터브를 이용한 우수한 위상 특성을 갖는 발룬 회로의 설계

  • Cho, Il-Hyun (Dept. Electrical & Computer Engineering, University of Seoul) ;
  • Lee, Moon-Que (Dept. Electrical & Computer Engineering, University of Seoul) ;
  • Kim, Hyeong-Seok (School of Electrical & Electronics Engineering, Chungang Univ.)
  • 조일현 (서울시립대학교 전자전기 컴퓨터 공학부) ;
  • 이문규 (서울시립대학교 전자전기 컴퓨터 공학부) ;
  • 김형석 (중앙대학교 전자전기공학부)
  • Published : 2005.07.18
Download PDF
⟨ Previous Next ⟩

Abstract

A broadband microstrip balun is proposed and designed using a ${\lambda}/4$short-stub in order to compensate phase imbalance. For the demonstration, two baluns are proposed and designed using a ${\lambda}/4$ shorted stub. One is a modified form of the conventional Wilkinson balun, and the other is a modified ring hybrid. Baluns are implemented on TLX-9 substrate of which the dielectric constant is 2.54 and the thickness is 0.5mm. The measurements show a bandwidth of 500MHz at the center frequency of 2GHz.

Keywords