DIRECTIONAL COUPLER WITH COUPLED NONUNIFORM TRANSMISSION-LINE REPRESENTED BY LUMPED BRUNE SECTION AND UNIFORM TRANSMISSION-LINE

Authors
OHBA Y NEMOTO Y SATO R
Citation
Y. Ohba et al., DIRECTIONAL COUPLER WITH COUPLED NONUNIFORM TRANSMISSION-LINE REPRESENTED BY LUMPED BRUNE SECTION AND UNIFORM TRANSMISSION-LINE, Electronics and communications in Japan. Part 3, Fundamental electronic science, 80(4), 1997, pp. 71-82
Citations number
10
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
Electronics and communications in Japan. Part 3, Fundamental electronic science → ACNP
ISSN journal
10420967
Volume
80
Issue
4
Year of publication
1997
Pages
71 - 82
Database
ISI
SICI code
1042-0967(1997)80:4<71:DCWCNT>2.0.ZU;2-A
Abstract
Directional couplers with wideband coupling characteristics can be con structed by using a nonuniform transmission line represented by a lump ed Prune section and a uniform transmission line whose characteristic impedance distribution has zero derivatives at the input and output en ds (NTL-BSZD). This paper first derives the equivalent circuits of two kinds of NTL-BSZD. Next, a realization technique for a coupled NTL-BS ZD (CNTL-BSZD) directional coupler and the results of characteristic a nalysis are presented. Then, a design method for the CNTL-BSZD directi onal coupler is described. Finally, experimental results are presented .