Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2004.07c
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- Pages.2028-2030
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- 2004
Lumped Element MMIC Direction Coupler Based on Parallel Coupled-Line Theory
평행 결합선로 이론에 근거한 MMIC 집중 소자형 방향성 결합기
- Kang, Myung-Soo (School of Electrical Engineering, Kookmin University) ;
-
Joung, Myung-Sup
(School of Electrical Engineering, Kookmin University)
;
-
Park, Jun-Seok
(School of Electrical Engineering, Kookmin University)
;
-
Lim, Jae-Bong
(School of Electrical Engineering, Kookmin University)
;
- Cho, Hong-Goo (School of Electrical Engineering, Kookmin University) ;
- Lee, Jae-Hak (Waveics co. Ltd) ;
-
Kim, Heong-Seok
(School of Electrical and Electronics Engineering, Chung Ang Univ)
- Published : 2004.07.14
Abstract
In this paper, a lumped equivalent circuit for a conventional parallel directional coupler is proposed. The equivalent circuit and design formula for the presented lumped element coupler is derived based on the even- and odd-mode properties of a parallel-coupled line. By using the derived design formula, we have designed the 3dB and 4.7dB lumped element directional couplers at the center frequency of 3.4GHz and 5.6GHz. A chip type directional coupler has been designed to fabricate with MMIC(Monolitic Microwave integrated circuit) process. Excellent agreements between simulations and measurements on the designed directional couplers show the validity of this paper.
Keywords