Title:
MULTI-PORT RADIO FREQUENCY SIGNAL TRANSFORMER CIRCUIT NETWORK
Document Type and Number:
Japanese Patent JPH09246815
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide the transformer circuit network interfacing an unbalanced port and plural phase shift balanced ports. SOLUTION: A balun 165 has a choke 140 to connect an unbalanced port 110 to a balanced node pair. An additional node 145 is provided on the balun. First and second unbalanced phase shift transmission lines 150, 155 have a common ground conductor wire connecting to the additional node 145 of the balun 165. Thus, in the case that the other end of the transmission lines is coupled with the balanced node of the balun 165 and the common ground conductor wire of the transmission lines is connected to the additional node 145 of the balun 165, a phase shift balanced port 130 is obtained from center conductors of the first and second unbalanced phase shift transmission lines 150, 155.
Inventors:
JIEEMUSU PII FUIRITSUPUSU
ERITSUKU ERU KURENZU
ERITSUKU ERU KURENZU
Application Number:
JP6904197A
Publication Date:
September 19, 1997
Filing Date:
March 05, 1997
Export Citation:
Assignee:
MOTOROLA INC
International Classes:
H01P5/10; H01P5/16; H01Q1/08; H01Q1/24; H01Q11/08; H04B1/38; (IPC1-7): H01P5/10
Attorney, Agent or Firm:
Shinsuke Onuki (1 person outside)