A new analysis method and broad-band design of tap-offs for CATV/DBS systems

Author

Kim, Dong, II ; Hwang, Jae Hyun ; Takahashi, Michiharu

Author_Institution

Dept. of Radio Sci. & Eng., Korea Maritime Univ., South Korea

Volume

46

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

171

Lastpage

178

Abstract

A new analysis method of tap-off for CATV (cable television) and DBS (direct broadcasting satellite) system was proposed and investigated by using 4-port and 3-port equivalent circuits. As a new analysis method the even-odd-mode theory of a symmetrical coupled-line directional coupler was introduced, and then it was applied to transformer type directional coupler and analyzed. By comparing the results of simulation and measurement the validity of proposed analysis method was confirmed. Furthermore, the tap-off has been broadened from 5 MHz to 2450 MHz by adopting the proposed theory

Keywords

cable television; direct broadcasting by satellite; directional couplers; equivalent circuits; microstrip directional couplers; multiport networks; telecommunication transmission lines; 3-port equivalent circuits; 4-port equivalent circuits; CATV; DBS; broad-band design; cable television; direct broadcasting satellite; even-odd-mode theory; symmetrical coupled-line directional coupler; tap-offs; transformer type directional coupler; Circuits; Design methodology; Electronics industry; Satellite broadcasting;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.826395

Filename

826395